tag:blogger.com,1999:blog-29439369272370789172024-03-12T20:29:41.742-07:00ZYS ball bearing,taper roller bearing,wind turbine bearingBall bearings are rolling a ball ball mounted inner and outer rims rims in the middle, can withstand greater loads. Also known as ball bearings.luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.comBlogger547125tag:blogger.com,1999:blog-2943936927237078917.post-74902646895370729632020-04-02T02:01:00.001-07:002020-04-02T02:01:55.449-07:00How much do you know about electric spindles?<div class="MsoNormal">
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<span style="font-family: Times, Times New Roman, serif;">I. Structural composition</span></div>
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<span style="font-family: Times, Times New Roman, serif;">The electric spindle is a new technology that combines the machine tool spindle and the spindle </span></div>
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<span style="font-family: Times, Times New Roman, serif;">motor in the field of CNC machine tools in recent years. The main drive system of high-speed CNC machine tools eliminates the belt drive and gear drive. The main shaft of the machine </span></div>
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<span style="font-family: Times, Times New Roman, serif;">tool is directly driven by the built-in motor, which shortens the length of the main drive chain of the machine tool to zero and realizes </span></div>
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<span style="font-family: Times, Times New Roman, serif;">the "zero drive" of the machine tool. This type of <span style="background: rgb(255, 255, 255); letter-spacing: 0.4pt;">t</span><span style="background: rgb(255, 255, 255); letter-spacing: 0.4pt;">ransmission structure</span><span style="background: rgb(255, 255, 255); letter-spacing: 0.4pt;"> intergrating </span><span style="background: rgb(255, 255, 255); letter-spacing: 0.4pt;">spindle </span></span></div>
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<span style="font-family: Times, Times New Roman, serif;"><span style="background: rgb(255, 255, 255); letter-spacing: 0.4pt;">motor and machine tool spindle, which makes the spindle components relatively independent from the drive system and overall structure</span><span style="background: rgb(255, 255, 255); letter-spacing: 0.4pt;"> of machine tool</span><span style="background: rgb(255, 255, 255); letter-spacing: 0.4pt;">, so it can be made into a "spindle unit", commonly known as electric spindle</span><span style="background: rgb(255, 255, 255); letter-spacing: 0.4pt;"> or </span><span style="background: rgb(255, 255, 255); letter-spacing: 0.4pt;">Motor Spindle.</span></span></div>
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<span style="font-family: Times, Times New Roman, serif;">The electric spindle is a set of components, which includes the electric spindle itself and its </span></div>
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<span style="font-family: Times, Times New Roman, serif;">accessories: electric spindle, frequency conversion device, oil mist lubricator, cooling device, built-in encoder, tool changer, etc. The rotor of the motor is directly used as the main shaft of the machine </span></div>
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<span style="font-family: Times, Times New Roman, serif;">tool, and the housing of the main shaft unit is the motor base, and other parts are integrated to realize the integration of the motor and the main shaft of the machine tool.</span></div>
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<span style="font-family: Times, Times New Roman, serif;">II.<span style="letter-spacing: 0.4pt;">Driving method</span></span></div>
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<span style="font-family: Times, Times New Roman, serif;">The electric motor of the electric spindle adopts AC asynchronous induction motor. <span style="letter-spacing: 0.4pt;">I</span><span style="letter-spacing: 0.4pt;">t is used on </span></span></div>
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<span style="font-family: Times, Times New Roman, serif;"><span style="letter-spacing: 0.4pt;">high-speed processing machine tools, </span><span style="letter-spacing: 0.4pt;">so </span><span style="letter-spacing: 0.4pt;">it needs to rise rapidly from static to tens of thousands of revolutions per minute or even hundreds of thousands of revolutions at startup. The starting torque is large, so the starting current must exceed the rated current of the ordinary motor by </span></span></div>
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<span style="font-family: Times, Times New Roman, serif;"><span style="letter-spacing: 0.4pt;">5 to 7 times.. There are two types of drive methods: inverter drive and vector control drive. </span></span></div>
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<span style="font-family: Times, Times New Roman, serif;">III. <span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">Application of high-speed electric spindle in machine tool industry</span></span></div>
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<span style="font-family: Times, Times New Roman, serif;">1. <span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">Simplify structure and promote modular machine </span><span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">tool </span><span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">structure</span></span></div>
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<span style="font-family: Times, Times New Roman, serif;">The electric spindle can form standardized and serialized products according to the characteristics of use, structure, and performance parameters for the host to choose, thereby promoting the </span></div>
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<span style="font-family: Times, Times New Roman, serif;">modularization of the machine tool structure.</span></div>
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<span style="font-family: Times, Times New Roman, serif;">2. <span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">Reduce machine tool costs and shorten machine tool development cycles</span><span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">. Standardized and serialized electric spindle products are easy to form professional and large-scale production, and can shorten the development cycle of machine tools, adapting to the current fast-changing market trend.</span></span></div>
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<span style="font-family: Times, Times New Roman, serif;">3. <span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">Improve machine performance and reliability.The CNC machine tool adopting the </span></span></div>
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<span style="font-family: Times, Times New Roman, serif;"><span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">electric spindle structure has improved the reliability of the machine tool due to the </span></span></div>
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<span style="font-family: Times, Times New Roman, serif;"><span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">simplified structure and the reduction of transmission and connection links; the electric </span></span></div>
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<span style="font-family: Times, Times New Roman, serif;"><span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">spindle components with the mature technology, complete functions, excellent performance and reliable quality make the machine tool more reliable.</span></span></div>
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<span style="font-family: Times, Times New Roman, serif;">4. <span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">Realize the special requirements of some high-end CNC machine tools.Some high-end CNC machine tools, such as parallel kinematic machine tools, pentahedron machining centers, small hole and ultra-small hole processing machine tools, must use electric spindles in order to meet the </span></span></div>
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<span style="font-family: Times, Times New Roman, serif;"><span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">complete functional requirements. The electric spindle system is directly driven by the </span></span></div>
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<span style="font-family: Times, Times New Roman, serif;"><span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">built-in motor to meet the high-speed cutting’s requirements of “high speed, high precision, high reliability and small </span></span></div>
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<span style="font-family: Times, Times New Roman, serif;"><span style="background: rgb(255, 255, 255); letter-spacing: 0.6pt;">vibration” on the machine tool. The combination of electric spindle technology and motor frequency conversion, closed-loop vector control, and AC servo control technology can meet the needs of metal cutting processing such as turning, milling, boring, drilling, and grinding.</span></span></div>
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<span style="font-family: Times, Times New Roman, serif;">In September 1958, the spindle manufacturing department successfully developed China's first high-precision electric spindle. The electric spindle uses the speed of 30,000 ~ 60,000r / min for precision bearing grinding.</span></div>
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<span style="font-family: Times, Times New Roman, serif;">Through the efforts of several generations of spindle employees, ZYS has established its leading </span></div>
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<span style="font-family: Times, Times New Roman, serif;">position in the field of high frequency Spindle spindle in China, and its research and development </span></div>
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<span style="font-family: Times, Times New Roman, serif;">strength and spindles varieties rank first in China.</span></div>
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<span style="font-family: Times, Times New Roman, serif;">For more detailes of electrical spindle, please contact Mr. ZHANG by <span class="15" style="letter-spacing: 0pt; text-indent: 0pt;"><a href="mailto:zys_zyj@163.com" style="text-indent: 0pt;">zys_zyj@163.com</a> or visit www.zys-bearing.com.</span></span></div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-88291202820424999652019-11-14T01:43:00.000-08:002019-11-14T01:44:54.776-08:00ZYS WIND TURBINE BEARINGS<div class="MsoNormal" style="line-height: 200%;">
<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 200%;">In recent years, wind power in emerging markets around the world has developed rapidly. </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 200%;">Against the backdrop of national policy support and tight energy supply, China's wind power </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 200%;">equipment manufacturing industry has risen rapidly, and the market demand for wind power </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 200%;">equipment has grown rapidly, which has also driven the development of wind turbine bearings.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 200%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 200%;">Bearings are the core components of wind turbines. Wind turbine bearings range from bearings used in blades, main shafts and yaws to high speed bearings used in gearboxes and </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 200%;">generators.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 200%;"><o:p></o:p></span></div>
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<b><span style="font-family: "ikeasans"; font-size: 12pt; line-height: 150%;">Main features of wind turbine bearings</span></b><b><span style="font-family: "ikeasans"; font-size: 12pt; line-height: 150%;">:</span></b><b><span style="font-family: "ikeasans"; font-size: 12pt; line-height: 150%;"><o:p></o:p></span></b></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">1. </span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Bad</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"> use environment</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">2</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"> </span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">H</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">igh maintenance cost</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">3</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">. High </span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">require</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">ment of service life.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Bearings for wind turbines mainly include yaw bearings, pitch bearings, spindle bearings, </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">gearbox bearings, and generator bearings. </span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<b><span style="font-family: "ikeasans"; font-size: 12pt; line-height: 150%;">Generator bearing</span></b><b><span style="font-family: "ikeasans"; font-size: 12pt; line-height: 150%;"><o:p></o:p></span></b></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Bearing type: deep groove ball bearings, angular contact bearings.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Working conditions: high speed (1000-1500rpm), high temperature (90-120 °C) heavy load.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Grease requirements: excellent shear stability, good oxidation stability, good wear resistance, </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">excellent low temperature start-up performance.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<b><span style="font-family: "ikeasans"; font-size: 12pt; line-height: 150%;">Spindle bearing</span></b><b><span style="font-family: "ikeasans"; font-size: 12pt; line-height: 150%;"><o:p></o:p></span></b></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Bearing type: tapered roller bearing, spherical bearing.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Working conditions: low speed (<25rpm), wide temperature range, heavy load, vibration, high humidity.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Grease requirements: excellent wear resistance, good oxidation stability, excellent low </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">temperature start-up performance, good water resistance and so on.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<b><span style="font-family: "ikeasans"; font-size: 12pt; line-height: 150%;">Pitch/yaw bearing</span></b><b><span style="font-family: "ikeasans"; font-size: 12pt; line-height: 150%;"><o:p></o:p></span></b></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Bearing type: four point contact ball bearing</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Working conditions: wide temperature range, heavy load, vibration, high humidity.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Grease requirements: excellent corrosion resistance and wear resistance, excellent low </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">temperature start-up performance, good water resistance, good oxidation stability, etc.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">Each wind turbine equipment has 1 set of yaw bearing</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"> </span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">and 3 sets of pitch bearing (</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">not </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">equipped for </span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">the wind turbine below MW)</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">,</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"> 3 sets of </span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">g</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">enerator bearing</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">s</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"> (deep groove ball </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">bearings, cylindrical roller bearings)</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">, </span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">2 sets of spindle bearings (spheroidal roller bearings), </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">totally </span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">9 sets.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">In addition, there are </span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">also </span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">gearbox bearings</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">. T</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">he gearbox has three structural forms. The first </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">type requires 15 sets of bearings, the second type requires 18 sets of bearings, and the third form requires 23 sets of bearings. Thus, the average number of wind turbine bearings is 27 sets.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">The structural forms of bearings for wind turbines mainly include four point contact ball bearings, cross roller bearings, cylindrical roller bearings, spherical roller bearings, and deep groove </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">ball bearings. The yaw bearing is installed at the connection between the tower and the </span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">cockpit, and the pitch bearing is installed at the joint of the root of each blade and the hub.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<b><span style="font-family: "ikeasans"; font-size: 12pt; line-height: 150%;">Wind power bearing production process</span></b><b><span style="font-family: "ikeasans"; font-size: 12pt; line-height: 150%;"><o:p></o:p></span></b></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">1. Control the forging temperature.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">2. Control the modulation process to ensure the mechanical properties.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">3. Control the depth of the intermediate frequency quench hardened layer on the surface.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
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<span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;">4. Avoid micro cracks on the surface.</span><span style="font-family: "ikeasans"; font-size: 12.0000pt; line-height: 150%;"><o:p></o:p></span></div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-5029011435315949732019-10-29T03:01:00.000-07:002019-10-29T03:01:52.643-07:00How much do you know about wind turbine bearing?In recent years, wind power in emerging markets around the world has developed rapidly. Against the backdrop of national policy support and tight energy supply, China's wind power equipment manufacturing industry has risen rapidly, and the market demand for wind power equipment has grown rapidly, which has also driven the development of wind turbine bearings.<br />
Bearings are the core components of wind turbines. Wind turbine bearings range from bearings used in blades, main shafts and yaws to high speed bearings used in gearboxes and generators<br />
Main features of wind turbine bearings<br />
1. Bad use environment.<br />
2. High maintenance cost.<br />
3. High requirement of service life.<br />
Bearings for wind turbines mainly include yaw bearings, pitch bearings, spindle bearings, gearbox bearings, and generator bearings.<br />
Generator bearing<br />
Bearing type: deep groove ball bearings, angular contact bearings.<br />
Working conditions: high speed (1000-1500rpm), high temperature (90-120 °C) heavy load.<br />
Grease requirements: excellent shear stability, good oxidation stability, good wear resistance, excellent low temperature start-up performance.<br />
Spindle bearing<br />
Bearing type: tapered roller bearing, spherical bearing.<br />
Working conditions: low speed (<25rpm), wide temperature range, heavy load, vibration, high humidity.<br />
Grease requirements: excellent wear resistance, good oxidation stability, excellent low temperature start-up performance, good water resistance and so on.<br />
Pitch/yaw bearing<br />
Bearing type: four point contact ball bearing<br />
Working conditions: wide temperature range, heavy load, vibration, high humidity.<br />
Grease requirements: excellent corrosion resistance and wear resistance, excellent low temperature start-up performance, good water resistance, good oxidation stability, etc.<br />
Each wind turbine equipment has 1 set of yaw bearing and 3 sets of pitch bearing (not equipped for the wind turbine below MW), 3 sets of generator bearings (deep groove ball bearings, cylindrical roller bearings), 2 sets of spindle bearings (spheroidal roller bearings), totally 9 sets.<br />
In addition, there are also gearbox bearings. The gearbox has three structural forms. The first type requires 15 sets of bearings, the second type requires 18 sets of bearings, and the third form requires 23 sets of bearings. Thus, the average number of wind turbine bearings is 27 sets.<br />
The structural forms of bearings for wind turbines mainly include four point contact ball bearings, cross roller bearings, cylindrical roller bearings, spherical roller bearings, and deep groove ball bearings. The yaw bearing is installed at the connection between the tower and the cockpit, and the pitch bearing is installed at the joint of the root of each blade and the hub.<br />
Wind power bearing production process<br />
1. Control the forging temperature.<br />
2. Control the modulation process to ensure the mechanical properties.<br />
3. Control the depth of the intermediate frequency quench hardened layer on the surface.<br />
4. Avoid micro cracks on the surface.<br />
The cleaning process of wind power bearing:<br />
1. Inspection of forging blank<br />
2. Rough turning<br />
3. Finish turning<br />
4. Molding finish turning<br />
5. Heat treatment<br />
6. Gear-hobbing and gear-milling processing<br />
7. During drilling, according to customer requirements, it can be treated with blue, phosphating and vulcanization.<br />
8. Rough grinding and fine grinding<br />
9. Demagnetization, cleaning, assembly, surface coating, grease filling,packagingluoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-72928402768292967482019-10-21T01:13:00.000-07:002019-10-21T01:13:59.088-07:00What causes the bearing cage to break?The <a href="http://www.zysbearing.com/bearing-cage-materials/">cage/retainer</a> in the rolling bearing plays the role of equidistance separating the rolling elements and preventing the rolling elements from falling, guiding and driving the rolling elements to rotate.<br />
Although the bearing is composed of many bearing parts, the first damaged/failed part of the bearing is often the bearing cage. The cage can be said to be the bearing "blood vessel", because it can evenly distribute the inner ring, the outer ring and the rolling element. The failure or damage of bearing cage will easily shorten the life of the bearing or even damage it. What causes the bearing cage to break?<br />
<br />
◐◑ Insufficient bearing lubrication<br />
Lubricating oil or grease is dry without adding in time / daily maintenance, or use the wrong label of the oil or grease.<br />
◐◑ Bearing impact load<br />
The intense vibrations in the impact load create an impact of the rolling elements on the cage.<br />
◐◑ Bearing cleanliness<br />
The bearing is not well sealed in the bearing box, and then dust may enter; the friction between the rolling element and the cage may be added, thus causing damage to the cage.<br />
◐◑ Installation problem<br />
The bearings are not installed correctly and damage the cage during installation.<br />
◐◑ Bearing creep<br />
Creep mostly refers to the sliding phenomenon of the ring. Under the condition of insufficient interference of the matching surface, the load point moves in the surrounding direction due to sliding, resulting in the deviation of the ring from position of the shaft or the outer casing towards the circumference direction.<br />
Improper installation, the inclination, and too large interference will easily cause clearance reduction, increasing friction heat production, surface softening, and the abnormal peeling occurs prematurely. As peeling spreads, the foreign matter is peeled off into the pocket of the cage, resulting in the blockage of cage operation; the generation of additional loads increased the wear of the cage, and such a deteriorating cycle can cause the cage to break.<br />
◐◑ Bearing cage material defect<br />
Cracks, metal inclusions, shrinkage cavities, air bubbles and riveting defects, nails, padding, severe riveting, etc. may cause the cage to break.<br />
◐◑ Intrusion of hard foreign objects<br />
The intrusion of foreign hard foreign objects or other foreign matter increase the wear of bearing cage.<br />
Bearing cage performance varies with cage materials and molding technology, ZYS can supply all types of bearing cage to meet the requirements of different applications. Besides the textile laminated phenolic resin, porous polyamide and PTFE engineering plastic, and other plastic cage materials, we can also supply finished cages according to the drawings provided by customers. For more information, please send email to <a href="mailto:zysdong@gmail.com">zysdong@gmail.com</a> or visit our website <a href="http://www.zysbearing.com/">www.zysbearing.com</a>.luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-69636215821599806592019-10-10T01:43:00.000-07:002019-10-10T01:43:07.466-07:00Which type of bearing is less noisy?<div class="MsoNormal">
The noise of bearing not only affects the bearing operation, but also brings a lot of trouble to the mechanical equipment. The intrusion of foreign materials will directly cause certain noise during the operation of the bearing, and the improper lubrication and wrong bearing installation will also cause bearing noise. Which kinds of bearings have less noise?</div>
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1. The noise of the ball bearing is lower than that of the roller bearing, and the friction noise of the bearing with less sliding is lower than that of the bearing with relatively more sliding; the bearing with more balls and thick outer ring also has smaller noise.</div>
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2. The noise of bearing with solid cage is relatively lower than that of a bearing using a stamped cage.</div>
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3. The noise of bearing with the plastic cage is lower than that of the bearings using solid cage or stamped cage.</div>
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4.Bearings with high precision, especially those with higher precision rolling elements, have lower noise than low precision bearings.</div>
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5. The noise of small bearings is relatively small compared to the noise of large bearings.</div>
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In order to maintain the good performance of the bearing, daily maintenance, inspection, overhaul, and prevention must be done. For long-running equipment, the usual inspection and tracking is particularly important, including the rotation of the bearing, vibration, temperature, lubricant status, etc. According to the test results, equipment maintenance personnel can find and deal with problems in time. ZYS will carefully analyze the technical information and application of bearing offered by the customer, and then choose the right type of bearing and inform the precautions during installation and operation. If you want to know more information, please send email to zysdong@gmail.com or visit our website: <a href="http://www.zysbearing.com/">www.zysbearing.com</a>.</div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-80035854079034090942019-06-26T08:30:00.000-07:002019-07-10T20:55:48.949-07:00processing of ZYS taper roller bearing~1<iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/qnwP8wv_-kI" width="480"></iframe>luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-13802330157208154552019-04-11T01:31:00.000-07:002019-04-11T01:31:06.026-07:00Tips of changing the washing machine bearing After the washing machine bearing is removed, first observe whether there are cracks, rust, scars on the rolling element, the inner ring and outer ring of the bearing. Then hold the inner ring of the bearing by hand and level the bearing, and rotate the outer ring of the bearing with the other hand. If the bearing is good, the outer ring should rotate smoothly and gradually decelerate to stop. There is no vibration or obvious stagnation during the rotation. After the rotation, the outer ring does not reverse. If the bearing is defective, noise and vibration will appear when it rotates. It will be abrupt like a brake when it stops, and it will reverse backwards seriously. Such bearings should be replaced. <br />
The radial clearance of the washing machine bearing is 0.01 mm-0.02 mm. Push the inner ring in all directions. If the gap is felt when pushing, then the bearing wear is severe.<br />
Before installing the washing machine bearing, it should be cleaned and checked for flexibility and smoothness, and greased. Then, ZYS washing machine bearing is placed on the journal, and a sleeve is used to hold the inner ring of the bearing. The upper end of the sleeve is iron-plated and hammered until the bearing is in place. When knocking, pay attention to the fact that the bearing can not be skewed, and the tap should be facing the axial direction.luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-24244954948403258262019-04-09T20:20:00.002-07:002019-04-09T20:20:33.251-07:00Signs That You Need To Change Washing Machine Bearings<h2 style="background-color: white; box-sizing: border-box; color: #222222; line-height: 1.1; margin: 0px; outline: none; padding: 0px 0px 20px;">
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1. Noise</span></h2>
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After long operation of washing machine, the bearings in the drum are eventually going to wear out. You can tell this immediately when you hear noise appearing from the drum during the operation. You can do a quick inspection of the drum. </span></h2>
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<span style="font-family: "times" , "times new roman" , serif;">2. <span style="background-color: white; color: #222222;">Oil stains on the clothes</span></span></div>
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<span style="background-color: white; color: #222222;"><span style="font-family: "times" , "times new roman" , serif;">If there are oil on the clothes after each washing cycle, it means that your main seal on the bearings is also worn and should be replaced. Despite this, you'd better change the bearings as well since they could collapse.</span></span></div>
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<span style="font-family: "times" , "times new roman" , serif;">It's important to remember to put the right seal around each bearing as well. The wrong seal could end up leaking water on the new bearings, hence causing part failure once again.</span></div>
<span style="color: #222222; font-family: times, times new roman, serif;">Products features of </span><span style="color: #222222; font-family: times, times new roman, serif;">Washing Machine Bearings:</span><br />
<div class="MsoNormal" style="color: #222222; margin-bottom: 5pt; margin-left: 36pt; margin-top: 5pt; text-indent: -18pt;">
<!--[if !supportLists]--><span style="background-attachment: initial; background-clip: initial; background-image: initial; background-origin: initial; background-position: initial; background-repeat: initial; background-size: initial; font-family: Symbol; font-size: 10pt; letter-spacing: 0pt;">· </span><!--[endif]--><span style="background-attachment: initial; background-clip: initial; background-image: initial; background-origin: initial; background-position: initial; background-repeat: initial; background-size: initial; font-family: "Times New Roman"; font-size: 12pt; letter-spacing: 0pt;">Bearing supported, shipped grease lubricated and protected against dust larger than .012" (.3mm) diameter.</span><span style="font-family: 'Times New Roman'; font-size: 12.0000pt; mso-font-kerning: 1.0000pt; mso-spacerun: 'yes';"><o:p></o:p></span></div>
<div class="MsoNormal" style="color: #222222; margin-bottom: 5pt; margin-left: 36pt; margin-top: 5pt; text-indent: -18pt;">
<!--[if !supportLists]--><span style="background-attachment: initial; background-clip: initial; background-image: initial; background-origin: initial; background-position: initial; background-repeat: initial; background-size: initial; font-family: Symbol; font-size: 10pt; letter-spacing: 0pt;">· </span><!--[endif]--><span style="background-attachment: initial; background-clip: initial; background-image: initial; background-origin: initial; background-position: initial; background-repeat: initial; background-size: initial; font-family: "Times New Roman"; font-size: 12pt; letter-spacing: 0pt;">Available with additional lip seals (- 2RS) for enhanced sealing, as well as, with a keyway on the inner ring (-P) or the inner and outer ring (-PP) for additional ease of installation.</span><span style="font-family: 'Times New Roman'; font-size: 12.0000pt; mso-font-kerning: 1.0000pt; mso-spacerun: 'yes';"><o:p></o:p></span></div>
<div class="MsoNormal" style="color: #222222; margin-bottom: 5pt; margin-left: 36pt; margin-top: 5pt; text-indent: -18pt;">
<!--[if !supportLists]--><span style="background-attachment: initial; background-clip: initial; background-image: initial; background-origin: initial; background-position: initial; background-repeat: initial; background-size: initial; font-family: Symbol; font-size: 10pt; letter-spacing: 0pt;">· </span><!--[endif]--><span style="background-attachment: initial; background-clip: initial; background-image: initial; background-origin: initial; background-position: initial; background-repeat: initial; background-size: initial; font-family: "Times New Roman"; font-size: 12pt; letter-spacing: 0pt;">Operating temperature: 21 to 140°F (-6 to 60°C)</span><span style="font-family: 'Times New Roman'; font-size: 12.0000pt; mso-font-kerning: 1.0000pt; mso-spacerun: 'yes';"><o:p></o:p></span></div>
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<span style="font-family: "times" , "times new roman" , serif;"></span></div>
<div class="MsoNormal" style="color: #222222; margin-bottom: 5pt; margin-left: 36pt; margin-top: 5pt; text-indent: -18pt;">
<!--[if !supportLists]--><span style="background-attachment: initial; background-clip: initial; background-image: initial; background-origin: initial; background-position: initial; background-repeat: initial; background-size: initial; font-family: Symbol; font-size: 10pt; letter-spacing: 0pt;">· </span><!--[endif]--><span style="background-attachment: initial; background-clip: initial; background-image: initial; background-origin: initial; background-position: initial; background-repeat: initial; background-size: initial; font-family: "Times New Roman"; font-size: 12pt; letter-spacing: 0pt;">Special grease available for operating temperatures: -40 to 212°F (-40 to 100°C)</span><span style="font-family: 'Times New Roman'; font-size: 12.0000pt; mso-font-kerning: 1.0000pt; mso-spacerun: 'yes';"><o:p></o:p></span></div>
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<strong style="color: black; font-family: times, "times new roman", serif; font-size: 13px;">Contact Person:</strong><span style="color: black; font-family: times, "times new roman", serif; font-size: 13px;"> Mr.Dong</span></div>
<div style="color: #222222;">
<strong style="color: black; font-family: times, "times new roman", serif; font-size: 13px;">Address:</strong><span style="color: black; font-family: times, "times new roman", serif; font-size: 13px;"> No.1 Jilin Road, Luoyang City,Henan Province,China</span></div>
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<strong style="color: black; font-family: times, "times new roman", serif; font-size: 13px;">Zip:</strong><span style="color: black; font-family: times, "times new roman", serif; font-size: 13px;">471039</span></div>
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<strong style="color: black; font-family: times, "times new roman", serif; font-size: 13px;">Tel:</strong><span style="color: black; font-family: times, "times new roman", serif; font-size: 13px;"> +86-379-6488 1209</span></div>
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<strong style="color: black; font-family: times, "times new roman", serif; font-size: 13px;">Fax:</strong><span style="color: black; font-family: times, "times new roman", serif; font-size: 13px;"> +86-379-6488 1529</span></div>
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<strong style="color: black; font-family: times, "times new roman", serif; font-size: 13px;">Mobile No:</strong><span style="color: black; font-family: times, "times new roman", serif; font-size: 13px;">+86 139 3792 3793</span></div>
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<strong style="color: black; font-family: times, "times new roman", serif; font-size: 13px;">Website:</strong><a href="http://www.zys.com.cn/" style="color: #666666; font-family: times, "times new roman", serif; font-size: 13px;" target="_blank"> www.zys.com.cn</a></div>
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<span style="font-family: "times" , "times new roman" , serif;"> <a href="http://www.zysbearing.com/" style="color: #666666;" target="_blank">www.zysbearing.com</a></span><br />
<span style="font-family: "times" , "times new roman" , serif;"><strong>E-mail:</strong><a href="mailto:zysdong@gmail.com" style="color: #666666;" target="_blank"> zysdong@gmail.com</a></span><br />
<span style="font-family: "times" , "times new roman" , serif;"><strong>Skype:</strong> <a href="skype:zysdongoffice?call" style="color: #666666;" target="_blank">zysdongoffice</a></span><br />
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<span style="font-family: "times" , "times new roman" , serif;"><strong>QQ:</strong> <a href="msnim:chat?contact=18937963793" style="color: #666666;" target="_blank">18937963793</a> </span></div>
</div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-82418777830751069202019-03-28T01:42:00.002-07:002019-03-28T01:43:43.475-07:00How to install the robot bearing?<div class="p" style="background: rgb(255,255,255); margin-bottom: 0.0000pt; margin-left: 0.0000pt; margin-right: 0.0000pt; margin-top: 0.0000pt; mso-line-height-alt: 12pt; mso-pagination: widow-orphan; padding: 0pt 0pt 0pt 0pt; text-indent: 0.0000pt;">
<span style="font-family: "times" , "times new roman" , serif;"><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;">T</span><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;">he </span><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;">installation</span><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;"> of </span><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;">robot bearing will affect the accuracy, life and performance of the robot bearing. Therefore, it is important to install the robot bearing in accordance with the operating standards. </span><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;">The following are the</span><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;"> installation rules for robot bearings.</span></span></div>
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<span style="font-family: "times" , "times new roman" , serif;"><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;">The installation of the robot bearing should be based on the structure of the robot bearing, the size and the mating nature of the robot bearing components. The pressure should be directly applied to the end face of the ring</span><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;"> instead of</span><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;"> transmitt</span><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;">ing </span><span style="color: #555555; font-size: 12pt; letter-spacing: 0pt;">through the rolling element. The robot bearing installation generally adopts the following methods: First, clean the robot bearings and related parts. For grease-lubricated robot bearings and double-sided oil seals or dust caps, the seal robot bearings do not need to be cleaned before installation. Check the size and finishing of the relevant parts.</span></span></div>
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<span style="color: #555555; font-family: "times" , "times new roman" , serif; font-size: 12pt; letter-spacing: 0pt; text-indent: 24pt;">The inner ring of the robot bearing is tightly matched with the shaft. When the outer ring and the bearing hole of the robot are loosely matched, the robot bearing can be press-fitted on the shaft by the press, and then the shaft is loaded into the hole of the robot bearing seat together with the robot bearing. On the end face of the inner ring of the robot bearing during press-fit, a mounting sleeve (copper or mild steel) made of soft metal material is used. The inner diameter of the assembled sleeve should be slightly larger than the diameter of the journal. The outer diameter should be slightly smaller than the inner ring of the robot bearing to avoid pressing on the cage.</span><span style="color: #555555; font-family: "times" , "times new roman" , serif; font-size: 12pt; letter-spacing: 0pt; text-indent: 24pt;">When t</span><span style="color: #555555; font-family: "times" , "times new roman" , serif; font-size: 12pt; letter-spacing: 0pt; text-indent: 24pt;">he outer ring of the robot bearing is tightly matched with the hole of the robot bearing se</span><span style="color: #555555; font-family: "times" , "times new roman" , serif; font-size: 12pt; letter-spacing: 0pt; text-indent: 24pt;">at but</span><span style="color: #555555; font-family: "times" , "times new roman" , serif; font-size: 12pt; letter-spacing: 0pt; text-indent: 24pt;"> the inner ring and the shaft are loosely fitted, the robot bearing can be first pressed into the hole of the robot bearing seat. At this time, the outer diameter of the assembling sleeve should be slightly smaller than the diameter of the seat hole. If the robot bearing ring is tightly fitted with the shaft and the seat hole, the inner ring and the outer ring should be pressed into the shaft and the seat hole at the same time. The structure of the assembly sleeve should be able to simultaneously press the end faces of the inner and outer rings of the robot bearing. </span><br />
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<span style="font-family: Times, Times New Roman, serif;"><strong>Contact Person:</strong> Mr.Dong<br /><strong>Address:</strong> No.1 Jilin Road, Luoyang City,Henan Province,China<br /><strong>Zip:</strong>471039<br /><strong>Tel:</strong> +86-379-6488 1209<br /><strong>Fax:</strong> +86-379-6488 1529<br /><strong>Mobile No:</strong>+86 139 3792 3793<br /><strong>Website:</strong><a href="http://www.zys.com.cn/" style="color: #666666; text-decoration-line: none;" target="_blank"> www.zys.com.cn</a><br /> <a href="http://www.zysbearing.com/" style="color: #666666; text-decoration-line: none;" target="_blank">www.zysbearing.com</a><br /><strong>E-mail:</strong><a href="mailto:zysdong@gmail.com" style="color: #666666; text-decoration-line: none;" target="_blank"> zysdong@gmail.com</a><br /><strong>Skype:</strong> <a href="skype:zysdongoffice?call" style="color: #666666; text-decoration-line: none;" target="_blank">zysdongoffice</a><strong></strong></span></div>
<span style="color: #555555; font-family: Times, Times New Roman, serif; font-size: 12pt; letter-spacing: 0pt; text-indent: 24pt;"></span><br />
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<span style="font-family: Times, Times New Roman, serif;"><strong>QQ:</strong> <a href="msnim:chat?contact=18937963793" style="color: #666666; text-decoration-line: none;" target="_blank">18937963793</a> </span></div>
</div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-24701982966110165432019-02-22T00:26:00.000-08:002019-02-22T00:26:04.348-08:00The inspection of one-way bearing for washing machine<div style="background-color: white; color: grey; font-family: "Microsoft Yahei", Verdana, Arial, Helvetica, sans-serif; font-size: 14px; line-height: 2em; padding: 0px;">
<span style="font-family: "comic sans ms";">Although the outer cup of the clutch is accurately drawn from strip steel, it can go slightly out of round during heat treatment. When the assembly is pressed into a ring gage or properly prepared housing of correct size and wall thickness, it becomes round and properly sized. Direct measurement of the outside diameter of a drawn cup assembly is an incorrect procedure. The proper inspection procedure is as follows:</span></div>
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<span style="font-family: "comic sans ms";">1. Press the assembly into a ring gage of the proper size.</span></div>
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<span style="font-family: "comic sans ms";">2. Gage the bore with the specified plug gages of the proper size.</span></div>
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<span style="font-family: "comic sans ms";">- The locking plug is rotated to insure lockup when the clutch is operated at low limit shaft and is mounted in a high limit housing strong enough to properly size the clutch. </span></div>
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<span style="font-family: "comic sans ms";">- The overrun plug is rotated to ensure free over-running when the clutch is operated on a high limit shaft and is mounted in a low limit housing. </span></div>
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<span style="font-family: "comic sans ms";">- The go plug and no go plug insure proper size of the bearings in the clutch and bearing assemblies.</span></div>
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<span style="color: grey; font-family: "comic sans ms"; font-size: 14px;">If you want to know more about bearings, please visit </span><span style="background-color: transparent; font-size: 14px;"><span style="color: grey; font-family: comic sans ms;">www.zys-bearings.com or send email to zysdong@gmail.com.</span></span></div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-77125226939550793292019-01-29T01:40:00.002-08:002019-10-11T02:21:18.427-07:00Slewing bearing (turntable bearing) selection calculation method<div style="background-color: white; color: grey; font-family: "Microsoft Yahei", Verdana, Arial, Helvetica, sans-serif; font-size: 14px; padding: 0px;">
<a href="http://www.zysbearing.com/slewing-bearings/">Slewing bearing (turntable bearing) Selection calculation method:</a></div>
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Static reference load Fa 'and M' calculation method</div>
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Single row four point contact ball</div>
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Single-row four-point contact ball slewing bearing selection calculation according to the bearing angle of 45 ° and 60 ° two cases.</div>
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I, a = 45 ° Ⅱ, a = 60 °</div>
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Fa '= (1.225 • Fa + 2.676 • Fr) • fs Fa' = (Fa + 5.046 • Fr) • fs</div>
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M '= 1.225 • M • fs M' = M • fS</div>
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Then find the above two points on the graph, one of which can be below the curve.</div>
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Single row crossed roller type</div>
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Fa '= (Fa + 2.05 • Fr) • fs</div>
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M '= M • fs</div>
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Double row different diameter ball</div>
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For double-row reduced-diameter ball slewing bearing selection calculation, Fr ≤ 10% Fa, Fr negligible. When Fr> 10% Fa, we must take into account changes in the pressure angle of the raceway, the calculation, please contact us.</div>
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Fa '= Fa • fs</div>
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M '= M • fs</div>
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Three-row roller</div>
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When selecting three-row roller slewing bearing, only the effect of axial roller load and overturning moment is calculated.</div>
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Fa '= Fa • fs</div>
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M '= M • fs</div>
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On January 1, 2008, the National Development and Reform Commission promulgated a new standard of slewing bearing with the participation of our company. 1. By JB / T 10837-2008 "construction machinery and equipment three rows of column slewing bearings" instead of JG / T 68-1999 "three rows of columnar construction machinery slewing ring"; 2. By JB / T 10838-2008 "Construction machinery and equipment single row cross roller (cone) slewing bearing" instead of JG / T 67-1999 "single row crossed roller bearings (construction machinery)", the new standard to cancel the original Appendix 1 "Supplement Series of specifications "; 3. By JB / T 10839-2008" construction machinery and equipment single volleyball slewing ring "instead of JG / T 66-1999" single row ball slewing ring for construction machinery ", the new standard to increase the overlap section configuration, Cancel some of the less common specifications, the new part of the specification, increased to 48; to cancel the original Appendix A "Supplementary Series Specifications"; performance curve by d0 ≤ 40,57 HRC, d0 ≥ 50,55 HRC drawing.</div>
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Three new standards have abolished product quality grading, since July 1, 2008 onwards.</div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-11979574862548001072019-01-24T01:52:00.003-08:002019-10-22T00:59:40.295-07:00ZYS High-speed Angular Contact Ball Bearings<div style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); background-color: white; color: #333333; font-family: "Helvetica Neue", Helvetica, "PingFang SC", 微软雅黑, Tahoma, Arial, sans-serif; font-size: 14px; line-height: 2em; padding: 0px; text-align: justify;">
High Precision Angular Contact Ball Bearings are our hot products. We have been engaged in research and development of High Precision Angular Contact Ball Bearings since 1958. ZYS has set up a scientific research workstation, and a strong world class experts team for High Precision Angular Contact Ball Bearings, whose main researches represent the technology developing direction of China bearing industry. So we bring you the High Precision Angular Contact Ball Bearings with best quality , high precision, reliable performance and strong durability.</div>
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<strong><span style="font-family: "comic sans ms";">1. Application of High-speed Angular Contact Ball Bearings:</span></strong></div>
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<span style="font-family: "comic sans ms";">•Machine tool spindle</span></div>
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<span style="font-family: "comic sans ms";">•Robot technology</span></div>
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<span style="font-family: "comic sans ms";">•high-frequency motor</span></div>
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<span style="font-family: "comic sans ms";">•gas turbine</span></div>
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<span style="font-family: "comic sans ms";">•centrifuge</span></div>
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<span style="font-family: "comic sans ms";">•small-size automobile front wheels</span></div>
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<span style="font-family: "comic sans ms";">•differential pinion shaft </span></div>
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<br /></div>
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<strong><span style="font-family: "comic sans ms";">2. Advantages of High-speed Angular Contact Ball Bearings:</span></strong></div>
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<span style="font-family: "comic sans ms";">The inner ring, outer ring and rolling element of High-speed Angular Contact Ball Bearings are made in high carbon chromium bearing steel. The chamfer arc radius of rings is reasonable, which is not only convenient to install, but also guaranteed to improve the installation precision and reduce the risk of the related parts being bumped. </span></div>
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<span style="font-family: "comic sans ms";">•The speed performance of High-speed Angular Contact Ball Bearings is outstanding. </span></div>
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<span style="font-family: "comic sans ms";">•Unique heat treatment process of High-speed Angular Contact Ball Bearings allows products to achieve the best dimensional stability and rigidity, so as to reduce wear and tear. </span></div>
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<span style="font-family: "comic sans ms";">•Multiple pre-load levels can help to meet different requirements for speed and system stiffness, which is more reasonable to select and use the levels. </span></div>
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<span style="color: #333333; font-family: "comic sans ms";"><span style="font-size: 14px;">Visit more:</span></span></div>
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<span style="color: #333333; font-family: "comic sans ms";"><span style="font-size: 14px;"><a href="http://www.zysbearing.com/precision-bearings/high-precision-angular-contact-ball-bearings.html">http://www.zysbearing.com/precision-bearings/high-precision-angular-contact-ball-bearings.html</a></span></span></div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-11014203486607885692019-01-21T01:38:00.000-08:002019-01-21T01:38:51.405-08:00Key Pieces Of ZYS BEARING Make Contributions To China Aerospace<div style="background-color: white; line-height: 2em; padding: 0px; text-align: justify;">
<span style="color: grey; font-family: "comic sans ms"; font-size: 14px;">If you want to know more, please visit </span><span style="background-color: transparent; font-size: 14px;"><span style="color: grey; font-family: "comic sans ms";">www.zys-bearings.com or send email to zysdong@gmail.com. </span></span></div>
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<span style="color: grey; font-family: "comic sans ms"; font-size: 14px;"><br /></span></div>
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<span style="color: grey; font-family: "comic sans ms"; font-size: 14px;">China has successfully sent this year's first satellite into space, according to the China Aerospace Science and Technology Corporation (CASC). The Zhongxing-2D satellite was sent into space on a Long March-3B carrier rocket from the Xichang Satellite Launch Center in southwest China's Sichuan Province at 1:11 a.m. Friday, and has entered the preset orbit. This was the first launch for China and also the first for the launch center in 2019. </span></div>
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<span style="font-family: "comic sans ms";">On the key parts of the Zhongxing 2D satellite, it is equipped with a variety of high-precision, long-life bearing products developed by ZYS.</span></div>
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<span style="font-family: "comic sans ms";">Among them, a certain type of bearing provided by ZYS is used in the momentum wheel of the "Zhongxing 2D" satellite attitude control system, which is a key component to determine the rotation accuracy and service life of the momentum wheel.</span></div>
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<span style="font-family: "comic sans ms";">Satellites operating in space need to adjust the attitude according to the actual situation, so as to achieve accurate and stable signal transmission. The bearings provided by ZYS are the core to ensure the stable operation of the momentum wheel. If the stability of the bearing operation fluctuates slightly, it will affect the operation of the momentum wheel, which will lead to satellite jitter.</span></div>
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<span style="font-family: "comic sans ms";">In addition to the bearings for the momentum wheel, ZYS also provides bearings and related components for the control system, transponder system, and antenna system for the Zhongxing 2D satellite.</span></div>
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<span style="font-family: "comic sans ms";">As communication broadcast satellite, the Zhongxing 2D satellite requires long-life, highly reliable bearings and bearing components. For this purpose, ZYS has set up a special project team to strictly control the processing, inspection, assembly, performance testing, test verification and other aspects of high-precision bearings and components, and finally ensure the smooth delivery of the products.</span></div>
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<span style="font-family: "comic sans ms";">Since 1958, ZYS has been developing special bearings, bearing components and momentum wheels for China's aerospace engineering. It has completed the "Dongfanghong" series of satellites, the "Shenzhou" series manned spacecraft, the "Chang’e" lunar exploration project and other supporting tasks. </span></div>
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luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-30837034304838276912019-01-16T23:37:00.000-08:002019-01-16T23:37:20.112-08:00The relationship between industrial robot accuracy and bearing design<div style="background-color: white; color: grey; font-family: "Microsoft Yahei", Verdana, Arial, Helvetica, sans-serif; font-size: 14px; line-height: 2em; padding: 0px; text-align: justify;">
<span style="font-family: "comic sans ms";">For <a href="http://www.zys-bearings.com/bearing/precision-bearing/thin-section-robot-bearing.html" style="text-decoration-line: none;" target="_blank">industrial robots</a>, accuracy is a very important factor that directly affects product quality and productivity. The main factor affecting the accuracy of industrial robots is the bearings. So what kind of bearings can make industrial robots have higher precision? </span></div>
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<strong><span style="font-family: "comic sans ms";">1. Design of key structural parameters</span></strong></div>
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<span style="font-family: "comic sans ms";">Industrial robot bearings have the requirements of long life, high rigidity and low friction. Therefore, when designing industrial robots, not only the maximum rated dynamic load should be considered, but also the optimal value of each structural parameter should be carefully selected to improve the contact stress distribution of the bearing parts. Then it can reach the optimum contact state for the formation of the lubricating oil film and improve the service life of the bearing.</span></div>
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<strong><span style="font-family: "comic sans ms";">2. The raceway position</span></strong></div>
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<span style="font-family: "comic sans ms";">The inner and outer rings of the contact ball bearing of the industrial robot adopt the integral structure, and the general sectional area is only 20% of the bearing with the same inner diameter standard, so the radial wall thickness of the cage is very limited. If the position is designed in the middle of bearing width, the bearing becomes a symmetrical structure and the strength of the bottom of the cage and the mounting position of the sealing ring will be limited. Therefore, in order to ensure that the bearing cage has sufficient strength and the sealing ring has sufficient installation space, the groove position adopts an asymmetrical design on both end faces.</span></div>
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<strong><span style="font-family: "comic sans ms";">3.The height of the flange</span></strong></div>
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<span style="font-family: "comic sans ms";">When the contact ball bearing of an industrial robot is in working condition, it must bear a certain axial load while receiving a certain radial load. If the axial load is too large, it may cause the break of contact ellipse between the steel ball and the edge of the inner and outer rings or between the flange and the raceway. And then, stress concentration will occur and the bearing ring will be worn, which will affect accuracy.</span></div>
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<span style="font-family: "comic sans ms";">Therefore, when the flange height is designed, the minimum flange height J of the bearing ring is calculated according to the Hertz contact stress theory according to the axial load of the bearing, and the diameter of the ring flange is calculated. In the design, the contact ball bearing cross-sectional area is considered small, and the flange height coefficient can be smaller than the deep groove ball bearing under the premise of satisfying the use requirement.</span></div>
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<strong><span style="font-family: "comic sans ms";">4. Sealing structure design</span></strong></div>
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<span style="font-family: "comic sans ms";">If the sealing property is not good, the impurities or other contaminants in the air will easily enter the bearing, thereby gradually failing the grease and resulting in bearing damage. Therefore, the sealing of the bearing is critical. When designing sealed bearing, it is necessary to consider the sealing and the specific working requirements of the bearing and the specific structural form of the bearing.</span></div>
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<span style="font-family: "comic sans ms";">Industrial robots are moving toward miniaturization, light weight, and precision. Therefore, the lubrication of bearings for industrial robots is preferably greased by means of a lubrication method with a sealing structure.</span></div>
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<strong><span style="font-family: "comic sans ms";">5.The characteristics of industrial robot bearing</span></strong></div>
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<span style="font-family: "comic sans ms";">There are two ways to match the inner ring of the bearing and the sealing lip:</span></div>
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<span style="font-family: "comic sans ms";">Contact seal with inner ring seal lip in contact with inner ring rib</span></div>
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<span style="font-family: "comic sans ms";">Non-contact seal with inner ring seal lip in contact with inner ring rib</span></div>
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<span style="font-family: "comic sans ms";">ZYS can offer the complete solution for industrial robot bearing. Any demand, please send email to zysdong@gmail.com.</span></div>
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luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-69296239431950105302019-01-08T00:46:00.003-08:002019-01-08T00:46:56.350-08:00The performance of lubrication-free bearing materialsThe lubrication-free bearing has the characteristics of high carrying capacity, impact resistance, high temperature resistance and strong self-lubricating ability. It is especially suitable for heavy load, low speed, reciprocating or swinging, etc., which is difficult to lubricate and form an oil film. It is also not afraid of water and other acid liquids. The lubrication-free bearing products have been widely used in metallurgical continuous casting machines, rolling equipment, mining machinery, molds, lifting machinery, textile machinery, wind power generation, ships, steam turbines, hydraulic turbines, injection molding machines and equipment production lines.<br />
Superior performance of lubrication-free bearing materials:<br />
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1. Extremely high wear resistance, very low wear rate<br />
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2. Good self-lubricating performance and low friction coefficient<br />
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3. High impact strength and good toughness.<br />
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4. Excellent chemical resistance, resistant to almost all acid-base media<br />
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5. Non-toxic, tasteless, no exudate<br />
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6. It has elasticity and shock absorption; it has good self-recovery and low water absorption.<br />
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7. Good mechanical properties, can withstand large impacts and loads, and can effectively protect other components from mechanical damage due to its excellent toughness.<br />
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8. Excellent low temperature resistance. It is not brittle even at -176 ° C.<br />
If you have demand for bearing, please visit http://www.zysbearing.com/ or send email to zysdong@gmail.com.luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-41320189614468787022019-01-04T02:06:00.003-08:002019-01-04T02:06:29.765-08:00Rotational accuracy of rolling bearingsRotational accuracy of rolling bearings refers to:<br />
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1. Radial runout of the inner ring and outer ring of the bearings;<br />
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2.The runout of bearing inner ring and outer ring end face to the raceway;<br />
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3. The runout of the inner ring datum end face to the inner diameter;<br />
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4. The amount of change of the outer surface line to the inclination of the datum end face;<br />
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5.The amount of change of the thrust bearing raceway to the bottom thickness.<br />
Symbols and definitions:<br />
1.The radial runout of the bearing: Kia-The radial runout of the inner ring of the bearings. It means the difference between the maximum and minimum distance between the inner diameter surface and the fixed point of the outer ring when the inner ring is at different angular positions; Kea-The radial runout of the outer ring of the bearings. It refers to the difference between the maximum and minimum distances between the outer diameter surface and the fixed point of the inner ring when the outer ring is at different angular positions.<br />
2. The runout of the bearing end face to the raceway<br />
Sia - The runout of the bearing inner ring end face to the raceway. It means the maximum and minimum axial distances between the datum end face of the inner ring and the fixed point of the outer ring when the inner ring is at different angular positions.<br />
Sea-The runout of the bearing outer ring end face to the raceway. It means the maximum and minimum axial distances between the datum end face of the outer ring and the fixed point of the inner ring when the outer ring is at different angular positions.<br />
3. Sd - The runout of the datum end of the bearing inner ring against the inner diameter.luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-66189477465015642682019-01-03T01:48:00.001-08:002019-01-03T01:48:18.999-08:00Introduction of Bearing Ring Groove Superfinishing MachineBearing Ring Groove Superfinishing Machine is semi-automatic superfinishing machine for groove of ball bearing ring, which is suitable for processing inner and outer ring groove.Processing accuracy is above P5 level.<br />
The workpiece spindle of the machine is driven by an AC- motor through belt pulley, and the variable frequency stepless speed is regulated. The oscillating mechanism is connected by a bending plate to the side of the drag plate. The feeding drag plate is installed on the top of the workpiece spindle box. The press device is fixed on the left side of the workpiece spindle box by bending plate.The radial and axial movement of the machine's dragging plate, the radial reciprocating and end face pressing of the pressure device, the oilstone pressure are all controlled by the hydraulic system, and the order of superfining action and the frequency of oscillation are controlled by electrical system.<br />
In order to achieve higher machining accuracy, various parameters are adjusted according to the size of the workpiece, the rough and fine superfining are finished. <b> Lubrication of the machine</b><br />
Before running the machine, lubricate the relative motion guide and the parts with oil mark. Bearings lubricated with molybdenum disulfide shall be replaced semiannually.<br />
<b>Maintenance of the machine</b><br />
1) The guide of the machine should be regularly lubricated, and there should be no acid and other sundries mixed in the lubricating oil.<br />
2) Regularly check the insulation of electrical appliances of machine.<br />
3) When the machine fails, press the total stop button immediately to stop all moving parts.<br />
4) The pressure gauge and electromagnetic valve of each oil system shall be checked regularly to ensure the reliability of their work.<br />
5) The coolant of the oil tank should be replaced regularly and the sediment should be removed.<br />
6) The filter should be cleaned regularly to ensure the filtering effect.<a href="http://www.zysbearing.com/bearing-manufacturing-machines/superfinishing-machine-series.html">http://www.zysbearing.com/bearing-manufacturing-machines/superfinishing-machine-series.html</a>luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-20400579414453938242018-12-27T01:10:00.000-08:002018-12-27T01:10:12.615-08:00Can you install the deep groove ball bearing?<div class="MsoNormal">
<span style="font-family: 宋体;"><span style="font-size: 14px;">1. When installing the bearing, it should be evenly stressed and cannot be hammered directly. For example, if the interference is large, the bearing should be placed in an air-heating furnace or oil furnace with automatic temperature control, and the heating temperature should be strictly controlled below 120°.</span></span></div>
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<span style="font-family: 宋体;"><span style="font-size: 14px;">2. The bearing with nylon cage can work continuously for a long time under the temperature -40°-120°. It should not exceed 4 hours at 150°, and the short-term temperature should not exceed 180°.</span></span></div>
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<span style="font-family: 宋体;"><span style="font-size: 14px;">3. The warehouse where the bearings are stored should be clean, dry and not allowed to be stored in the same warehouse with the chemical products. The relative humidity should not exceed 65%, and the bearings are not allowed to be stored on the ground.</span></span></div>
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<span style="font-family: 宋体;"><span style="font-size: 14px;">4. The stock bearings should be cleaned every year for rust-proof packaging.<a href="http://www.zysbearing.com/">http://www.zysbearing.com/</a></span></span></div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-36574603669772130042018-12-26T01:59:00.002-08:002018-12-26T01:59:35.406-08:00Which caused the frequent damage of rolling mill bearings?<div style="background-color: white; color: grey; font-family: "Microsoft Yahei", Verdana, Arial, Helvetica, sans-serif; font-size: 14px; line-height: 2em; padding: 0px; text-align: justify;">
<span style="font-family: "comic sans ms";">After analysis of effective data, the main forms of<a href="http://www.zys-bearings.com/bearing/large-size-bearing/large-size-rolling-mill-roller-bearing.html" style="text-decoration-line: none;" target="_blank"> rolling mill bearing</a> damage are fracture, wear and pitting.</span></div>
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<span style="font-family: "comic sans ms";">Damage form one: Fracture: inner and outer ring fracture, rolling element rupture, cage fracture</span></div>
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<span style="font-family: "comic sans ms";">The outer ring fracture is mainly caused by the excessive load and the insufficient bearing pressure.</span></div>
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<span style="font-family: "comic sans ms";">In addition to the cyclic load, the inner ring is connected with the roll neck by the interference fit during installation. There is a positive tensile peripheral stress. As long as micro cracks are formed on the inner ring, they will rapidly spread and then cause fracture.</span></div>
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<span style="font-family: "comic sans ms";">In addition to the above reasons, another reason for the fracture is that the oil and gas supply in the roller box is insufficient or interrupted, causing the bearing to heat up and then lock, and then causing damage to the inner and outer rings, the cage and the rolling elements.</span></div>
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<span style="font-family: "comic sans ms";">Damage form two: How is wear and pitting caused?</span></div>
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<span style="font-family: "comic sans ms";">Most of the wear is caused by the relative rotation of the roll neck and the inner hole.</span></div>
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<span style="font-family: "comic sans ms";">There are two main reasons for pitting: the bearing material is unqualified, caused by improper heat treatment. Foreign matter enters into the roller box, and pitting occurs during the running of the bearing.</span></div>
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<span style="font-family: "comic sans ms";">In addition, due to improper operation, the copper bracket is deformed. When the roller enters the bearing housing, the ball rubs against the inner sleeve and then scratches the inner sleeve, so that the roller is inflexible during operation, causing bearing failure.</span></div>
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<span style="font-family: "comic sans ms";">The height of the roll gap on both sides of the rolling mill is inconsistent, which causes the bearing to be stressed at a certain point due to uneven force during the running of the roll, thus causing bearing failure.</span></div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-63122646587143417852018-12-24T01:50:00.000-08:002018-12-24T01:50:18.648-08:00The working principle of deep groove ball bearings<div style="background-color: white; color: grey; font-family: "Microsoft Yahei", Verdana, Arial, Helvetica, sans-serif; font-size: 14px; line-height: 2em; padding: 0px; text-align: justify;">
<a href="http://www.zys-bearings.com/bearing/ball-bearing/high-quality-deep-groove-ball-bearing.html" style="text-decoration-line: none;" target="_blank"><span style="font-family: "comic sans ms";">Deep groove ball bearings </span></a><span style="font-family: "comic sans ms";">are suitable for high speed operation, low vibration and low noise, and they are extremely durable and require no maintenance. Deep groove ball bearings have the features of small friction coefficient, high limit speed, various sizes and forms, and they can be used in precision instruments, low noise motors, automobiles, motorcycles and general machinery. It is the most widely used type of bearing in the machinery industry. They mainly bear the radial load and can also withstand a certain amount of axial load. When it increases the radial clearance of the bearing, it has certain angular contact bearing performance and can withstand radial load and axial combined load.</span></div>
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<span style="font-family: "comic sans ms";">The basic deep groove ball bearing consists of an outer ring, an inner ring, a set of steel balls and a set of cages. There are two types of deep groove ball bearings: single row and double row. The deep groove ball structure is divided into two types: sealed and open. The open type means that the bearing does not have a sealing structure. The sealed deep groove ball is divided into dustproof seal and oil proof seal. The dust seal cover material is stamped from steel plate, which is simple to prevent dust from entering the bearing raceway. The oil-proof type is a contact type oil seal, which can effectively prevent the grease inside the bearing from overflowing.</span></div>
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<span style="font-family: "comic sans ms";">The type code of deep groove ball bearing is 6, and the double row deep groove ball bearing code is 4. It is the most common and widely used class 0 bearing. </span></div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com1tag:blogger.com,1999:blog-2943936927237078917.post-71138665442394980372018-12-18T01:29:00.000-08:002018-12-18T01:29:58.819-08:00Full ceramic bearings are not hybrid bearings<div style="background-color: white; color: grey; font-family: "Microsoft Yahei", Verdana, Arial, Helvetica, sans-serif; font-size: 14px; line-height: 2em; padding: 0px; text-align: justify;">
<span style="font-family: "comic sans ms";">Usually, people thought that bearings are actually hybrid bearings. So, today we will talk about the difference between full ceramic bearings and hybrid bearings? </span></div>
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<a href="http://www.zys-bearings.com/bearing/precision-bearing/hybird-ceramic-ball-bearings.html" style="text-decoration-line: none;" target="_blank"><strong><span style="font-family: "comic sans ms";">Ceramic Bearings</span></strong></a></div>
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<span style="font-family: "comic sans ms";">Full ceramic bearings consist of ceramic rings, ceramic balls, and synthetic cage made from PEEK or PTFE material or no cage at all. They are highly resistant to acids and alkalis, so they are suitable for corrosive environments. Silicon nitride (Si3N4) bearings can be heated to temperatures of 800°C without cage.</span></div>
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<span style="font-family: "comic sans ms";">Full ceramic bearings are also non-magnetic, so they can be used in medical devices for strong magnetic field. However, the greater hardness of ceramic bearings also means greater brittleness, so they can not bear shock load. </span></div>
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<a href="http://www.zys-bearings.com/bearing/precision-bearing/hybird-ceramic-ball-bearings.html" style="text-decoration-line: none;" target="_blank"><strong><span style="font-family: "comic sans ms";">Hybrid bearings</span></strong></a></div>
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<span style="font-family: "comic sans ms";">Hybrid bearings are a mixture of ceramic and steel materials. They use ceramic balls, but are paired with metal inner and outer rings. Therefore they are suitable for higher speeds conditions. </span></div>
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<span style="font-family: "comic sans ms";">Despite the small difference in design, the requirements of hybrid bearings have big different from full ceramic bearings. For example, full ceramic bearings do not require lubrication, but hybrid bearings need unless they are used at very low speeds. Precision hybrid bearings with a high-speed cage are capable of very high speeds, so they can be used in machine tool spindles. </span></div>
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<span style="font-family: "comic sans ms";">ZYS can design the bearings for the customers with the technical requirements and working conditions.</span></div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-33248559745373517592018-12-13T01:26:00.001-08:002018-12-13T01:26:42.407-08:00Configuration type of common rolling mill bearings<div style="background-color: white; color: grey; font-family: "Microsoft Yahei", Verdana, Arial, Helvetica, sans-serif; font-size: 14px; line-height: 2em; padding: 0px; text-align: justify;">
<span style="font-family: "comic sans ms";">(1) <a href="http://www.zys-bearings.com/bearing/spherical-roller-bearing.html" style="text-decoration-line: none;" target="_self">Spherical roller bearings</a>. The configuration of the early rolling mill bearings on the rolling mill is different from the present. At that time, two sets of spherical roller bearings were mainly installed side by side on the same roller neck. This configuration basically meets the production conditions at that time, and the rolling speed can reach 600 rpm.</span></div>
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<span style="font-family: "comic sans ms";">(2) <a href="http://www.zys-bearings.com/bearing/large-size-bearing/large-rolling-mill-roller-bearing.html" style="text-decoration-line: none;" target="_self">Four-row cylindrical roller bearing</a> + <a href="http://www.zys-bearings.com/bearing/ball-bearing/high-quality-thrust-ball-bearing-for-machine.html" style="text-decoration-line: none;" target="_self">thrust bearing</a>. The inner diameter of the cylindrical roller bearing is tightly matched with the roll neck, and it can bear radial force. The cylindrical roller bearing has advantages of large load capacity, high limit speed, high precision, easy processing, low production cost, convenient installation and disassembly and the inner and outer rings can be separated. The thrust bearing bears axial force, and the specific structure type can be selected according to the characteristics of the rolling mill. While for heavy-duty low-speed, we can equip with thrust roller bearings to withstand the thrust load with a small axial clearance. When the rolling speed is high, it is equipped with angular contact ball bearings so that speed limit is high and the axial clearance can be controlled. This type of bearing configuration not only has long bearing life, high reliability, but also has many advantages such as high precision and easy control of rolling products. Therefore, it is widely used in wire rod mills, sheet mills, foil mills, and support rolls for cold rolling mills and hot rolling mills.</span></div>
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<span style="font-family: "comic sans ms";">(3). <a href="http://www.zys-bearings.com/bearing/large-size-bearing/large-rolling-mill-roller-bearing.html" style="text-decoration-line: none;" target="_self">Four-row tapered roller bearings</a>. The tapered roller bearings can withstand both radial and axial forces, and no need to configure thrust bearings. The inner diameter of the tapered roller bearing is loosely matched with the roll neck. It is very convenient to install and disassemble, but sometimes it will cause sliding creep due to the loose fit. Therefore, the inner diameter is often processed with a spiral oil groove. This type of configuration is widely used in the working roll of four-roll hot rolling mill and a cold rolling mill, and roll for blanking machine, steel beam rolling mill.</span></div>
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<span style="color: grey; font-family: comic sans ms; font-size: 14px;">If you want to know more, please visit </span><span style="background-color: transparent; font-size: 14px;"><span style="color: grey; font-family: comic sans ms;">http://www.zys-bearings.com/ or send e-mail to zysdong@gmail.com. </span></span></div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-72028311223134652942018-12-07T00:07:00.002-08:002018-12-07T00:07:35.623-08:00Daily maintenance of bearings<div style="background-color: white; color: grey; font-family: "Microsoft Yahei", Verdana, Arial, Helvetica, sans-serif; font-size: 14px; line-height: 2em; padding: 0px; text-align: justify;">
<span style="font-family: "comic sans ms";">Bearings are an important part of machinery. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. Maintenance work is the top priority for bearings to work properly, maintain performance, and extend life. Everyone should take it seriously.</span></div>
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<span style="font-family: "comic sans ms";">Next, let's take a closer look at the daily maintenance work of the bearings.</span></div>
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<span style="font-family: "comic sans ms";">First, keep the bearings lubricated and clean</span></div>
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<span style="font-family: "comic sans ms";">Before inspecting the bearing, clean the surface of the bearing first and then remove the parts around the bearing. Pay special attention to the oil seal, which is a very fragile part. Please be careful when inspecting and disassembling the bearing to avoid damage to the part. If you have been experiencing bad symptoms when inspecting the oil seal of bearing and its surrounding parts, be sure to replace it to avoid damage to the bearing caused by a bad oil seal.</span></div>
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<span style="font-family: "comic sans ms";">Second, to ensure the quality of bearing lubricants</span></div>
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<span style="font-family: "comic sans ms";">The quality of the lubricant has a direct impact on bearing service life. The inspection method for the bearing lubricant is as follows: the lubricant is rubbed between the two fingers, and if there is a contaminant, it can be felt; or a thin layer of lubricant is applied on the back of the hand, and then the sealing is checked. Then it is to replace the lubricant of the bearing.</span></div>
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<span style="font-family: "comic sans ms";">Third, the working environment of the bearing</span></div>
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<span style="font-family: "comic sans ms";">When inspecting bearings, never expose them to contaminants or moisture. If the work is interrupted, cover the machine with a piece of oil-paper plastic or similar material. The working environment of the bearing is also very important. </span></div>
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<span style="font-family: "comic sans ms";">Fourth, the bearing seal</span></div>
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<span style="font-family: "comic sans ms";">The purpose of bearing sealing is to prevent dust, moisture and impurities from entering the bearing, but also to prevent the loss of lubricant. A good seal ensures that the machine works properly, reduces noise and extends the life of the parts.</span></div>
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<span style="font-family: "comic sans ms";">The above is the relevant introduction of the daily maintenance work of the bearing. It is mainly explained from four aspects. In fact, these four aspects are also related to each other. Therefore, bearing maintenance work is carried out closely around the four words of clean, lubrication, sealing and environment.</span></div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-84067746606187277882018-12-06T01:38:00.002-08:002018-12-06T01:38:56.628-08:00Installation and maintenance of slewing bearing<ol style="background-color: white; color: grey; font-family: "Microsoft Yahei", Verdana, Arial, Helvetica, sans-serif; font-size: 14px; list-style-image: initial; list-style-position: initial; margin: 0px; padding: 0px;">
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<span style="font-family: "comic sans ms";">Slewing bearings require careful handling.</span></div>
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<span style="font-family: "comic sans ms";">Slewing bearings should always be transported and stored in horizontal position and be stored in dry roofed areas.</span></div>
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<span style="font-family: "comic sans ms";">Use eyebolts for horizontal handling. Impact, particularly in radial direction, must be avoided.</span></div>
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<span style="font-family: "comic sans ms";">The surface of slewing bearing should be applied with anti-corrosion oil, and the anti-corrosion period is 6 months. Long storage (as backup, for example) periods will require special preservation.</span></div>
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<span style="font-family: "comic sans ms";">Requirements on supporting structures</span></div>
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<span style="font-family: "comic sans ms";">The support in the companion structures must be kept aligned to the track center.</span></div>
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<span style="font-family: "comic sans ms";">In order to prevent local overload and ensure smooth rotation, the supporting structures should be processed to remove internal stress after all the welding procedures. The contact surfaces for the bearing should be machined carefully and should be within flatness tolerances.</span></div>
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luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0tag:blogger.com,1999:blog-2943936927237078917.post-23958206574963127602018-12-04T23:11:00.003-08:002018-12-04T23:11:46.368-08:00General information about Bearing test machine<div style="background-color: white; color: grey; font-family: "Microsoft Yahei", Verdana, Arial, Helvetica, sans-serif; font-size: 14px; line-height: 2em; padding: 0px; text-align: justify;">
<span style="font-family: "comic sans ms";"><a href="http://www.zys-bearings.com/testing-machine/bearing-life-testing-machines.html">Bearing life test machine </a></span></div>
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<span style="font-family: "comic sans ms";"> Bearing life test results is an important index of comprehensive evaluation of bearing quality. It can reveal the quality level of bearing structure design, manufacturing process, material and lubrication etc.</span></div>
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<span style="font-family: "comic sans ms";"> This series of machine is controlled by industrial computer automatically. The load, speed, operation time and other main parameters can be preset, and the machine can work according to the set procedures. The test machine can also monitor, record automatically on bearing load, temperature, vibration, motor speed, current and other parameters. When the testing bearing failure or something wrong with the test machine, the machine will alarm downtime and record down the reason automatically, to realize unattended and intelligent management.</span></div>
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<span style="font-family: "comic sans ms";"> Auto bearing testing machine </span></div>
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<span style="font-family: "comic sans ms";"> This series of machine are realized the computer automatic control, monitoring test parameters, recording, alarm downtime and other functions.</span></div>
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<span style="font-family: "comic sans ms";"> This series of machine test subject design is unique, simulation accurately, high machining accuracy, high components configuration, so as to ensure the stability and reliability of the bearing test.</span></div>
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<span style="font-family: "comic sans ms";"> Sealed bearing testing machine </span></div>
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<span style="font-family: "comic sans ms";"> This kind of machine are often used to evaluate the bearing performance of a particular level and the durability of the bearing performance, such as the seal, friction, high-speed, high temperature resistance performance. Control mode can be automatic computer control or manual control.</span></div>
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<span style="font-family: "comic sans ms";"> Bearing parts testing machine </span></div>
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<span style="font-family: "comic sans ms";"> A lot of experiments and data statistics show that when bearing fatigue failure, the most probability is roller failure. Therefore, steel ball contact fatigue testing machine and roller fatigue testing machine are used to test the fatigue life of rolling elements. And then study the internal relationship between rolling element's fatigue life, material, manufacturing process, finished product quality etc.</span></div>
luoyang bearing research institute Co., Ltd.http://www.blogger.com/profile/08595012953686252235noreply@blogger.com0