When the belt surface cracks appear cracks

When the belt surface cracks appear cracks, wear and spalling and other precursory phenomena, or if slipping sound (except loose belt slipping sound relaxation occurs outside), it means that the belt may be broken. At this time, the belt should be replaced.
Replace the belt, first loosen the engine mounting screws and move the engine to the cylinder, the belt slack, and then take off the belt. If the belt is still difficult to remove after relaxation, pulleys and belts available screwdriver inserted between the side edges turn outward lift belt pulley, so you can remove the belt.
Bearing manufacturer the belt, belt installation should remember good location detour to avoid the wrong equipment. Install the belt, press the reverse order of removal operation can be

IKO needle roller bearing manufacturer body is slender needle roller bearings for rotation

IKO needle bearing its special internal structure of the mechanical design of small, lightweight. Guide bearings needle roller bearings are given high-quality, unique mechanical equipment to do precision machining, with the latest machines for quality evaluation, product maintain a high performance and high quality standards.
IKO needle roller bearing manufacturer body is slender needle roller bearings for rotation. Compared with ball bearing, needle roller bearings have a low profile and high load capacity characteristics. The use of needle roller bearings for mechanical simplicity of the whole space-saving and other aspects contribute. Widely used in machine tools, automobiles, motorcycles, printing machinery, industrial robots and construction equipment industries.

precision bearings requirements

Since the accuracy of precision bearing itself in less than 1μm, thus requiring its mating parts (shafts, bearing housings, end caps, ring, etc.) have a high dimensional accuracy and shape accuracy, especially with the surface to control the accuracy and bearing the same level, and this is a crucial point, but also the most easily overlooked.
Must also pay attention to match the mechanical precision bearing manufacturer  it is not the above requirements, often makes precision bearings in the bearing after installation error occurs several times larger than the original, or even 10 times more errors, fully become a precision bearings, because the match machine the error components are often not simply added to the error of the bearing, but on multiple amplified with different additions.

The difference between precision bearings and plain bearings

precision bearing and plain bearings should distinguish between the following points:
1, the value is not the same size requirements, high level of accuracy of the product of its size deviation (inner diameter, outer diameter, oval, etc.) than the required accuracy level low product value is smaller;
2, the rotation accuracy required value is not the same, high level of accuracy of the product of its rotational accuracy (internal radial runout, diameter runout, the end face of the raceway beating) the lower level of precision than the value of the product requirements to bearing manufacturers;
3, the surface shape and surface quality requirement value is not the same, high level of accuracy of the products in which the surface shape and surface quality (or channel raceway surface roughness deviation from circular, groove-shaped deviation) than the low level of precision the value to be strict product requirements;
4, precision grade products which are particularly high accuracy grade material than the average material properties of the product is more favorable.
Under normal circumstances, the accuracy of the finished grade rolling into the following six levels (from low to high): 0; 6; 6X; 5; 4; 2

Ideal sleeve bearing materials

Between bearing and shaft neck part of the load is transmitted through direct contact between the sliding surface, which is the boundary lubrication state. So the friction, wear and heat is inevitable. How to choose the sliding bearing materials to compensate for the lack of lubrication condition,roughness measuring instrument ,it is particularly important, according to the working characteristics of sliding bearing, sliding bearing materials should have the following properties of the ideal . (1) to reduce friction, material has the property of low friction resistance, associated with the shaft material and lubricant. bearing cage (2) the ability of wear resistance, abrasion resistance of the materials, and the microstructure of the material, the yield strength and hardness.

Mechanical spindle maintenance

mechanical spindle maintenance
Lowering the operating temperature of the bearing, the lubricating oil is often used approach. There lubrication, oil lubrication, oil circulation lubrication two kinds. When using these two methods to note the following:
1, in the use of oil circulating lubrication, to ensure that the fuel tank thermostat spindle fully adequate.
2, oil lubrication and oil circulation lubrication just the opposite, it can be when the bearing space per cent as long as the filling capacity.
Advantages of circulating lubrication is grinding spindle, in the case meet the lubrication, to reduce friction and heat, but also be able to give some of the heat absorbed by the spindle assembly.
For the same spindle lubrication in two-drop: Oil mist lubrication and injection lubrication.

rigidity and emergency response

Chiesa Corse racing team designed and manufactured by the company  Cardin axle unit and cylindrical roller bearings engine solutions for Chiesa Corse racing team provides the best speed , rigidity and emergency response , and to ensure that the car high-speed rotation efficiency and long reliable service life , thus engine bearings for high performance racing gives more adequate power , rigidity and reliability. Here are  Roller Bearings‍  distributor in China 's detailed report.

 solutions for racing system , which is the unit of  racing in karts Chiesa Corse racing team provides customized technology solutions, primarily for racing wheel bearing applications and engines were designed . The device uses the car dust cover unit that allows its bearings under race conditions convenient for cleaning lubrication, thus ensuring the efficiency of racing high-speed rotation , as well as long-term reliable service life.

At the same time , car unit of the car rear axle designed for reliable quality shaft mounting and rotating concentric with the real and the low friction ball locking device , thereby slewing bearing‍ providing the best speed, rigidity and response . In addition, a high-performance engine bearings are also racing to give a more ample power , rigidity and reliability. Also located in this race means outer surface and patented groove profile Group is designed to avoid this during the game supporting devices due to the risk of dislocation caused .

The concept of mechanical spindle

It refers to a mechanical spindle rotation axis of the workpiece or tool drive on the machine. Usually consists of a spindle, bearings and transmission parts (gears or pulleys) etc. spindle components. The machine is mainly used to support transmission parts such as gears, pulleys, transmit motion and torque, such as machine tool spindle; some for clamping workpieces, such as a mandrel. In addition planer, broaching machine and other main motion to linear motion outside, most machines have a spindle assembly. Motion accuracy and structural rigidity spindle unit is an important factor in determining the processing quality and cutting efficiency. Performance indicators to measure the spindle assembly is mainly rotational accuracy, rigidity and speed of adaptation. ① rotation accuracy: radial and axial grinding spindle is rotated in the direction of impact precision beating occur (see geometric tolerance), mainly on the manufacturing and assembly quality spindle and bearings. ② dynamic and static rigidity: The main decision of the bending stiffness of the spindle, the bearing stiffness and damping. ③ speed adaptation: the maximum permissible speed and speed range, primarily determine the structure and lubrication in bearings, and cooling conditions.

Roundness measurement advantages

roundness measurement advantages:
1) at a lower cost to improve measurement efficiency: Compared with similar products, its cost is very low, measuring efficiency is greatly improved;
Accuracy 2) to improve measurement: the traditional way using the visual method of measuring people watch easily lead to erroneous measurements;
3) Data traceability: Save data record and can be retrospective and analysis, the traditional model due to the non-real-time recording, poor traceability analysis;
4) can be equipped with more than one indicator, while testing, the detection efficiency can be greater extent
5) in accordance with the specifications index, automatically prompts the bearing measurement results (NG or PASS)

Wind power bearing production process

Wind speed gearbox input shaft is generally 10-20 rev / min, due to the relatively low speed, causing the input shaft bearing is the planet carrier support bearing oil film formation is often more difficult. The role of bearing measurement bearing operation at the time of separating the two metal contact surfaces, avoid direct metal to metal contact occurs. We can introduce a parameter λ to characterize the bearing lubrication (λ is defined as the film thickness and roughness of the two contact surfaces and the ratio).
Wind turbine bearing production process:
1, to control the forging temperature, not coarse grains;
2, to control the modulation quality process to ensure that quenched their core part of the organization to ensure its mechanical properties;
3, IF quenching surface hardened layer depth control;
4, to avoid surface micro-cracks.

Tapered roller bearing structural features

taper roller bearing type code is 30000, tapered roller bearings for the separation of bearings. Under normal circumstances, especially in GB / T307.1-94 "Rolling bearings tolerance" within the cone are involved in the size range between roller bearing outer ring and inner components can be one hundred percent universal interchangeable.
The angle of the outer ring and the outer raceway diameter has been standardized with the same dimensions specified. Not allowed to change the design and manufacturing time. To cause between tapered roller bearing outer ring and inner components can be interchanged in common worldwide.
Tapered roller bearings are mainly used to bear radial load mainly radial and axial joint load. Compared with the angular contact ball bearings, bearing capacity, low speed limit.Cross roller bearing can withstand axial load in one direction, a direction to limit the axial displacement of shaft or housing.

Tapered Roller Bearings definition

taper roller bearing are separable bearings, the inner and outer rings have a tapered raceway. This kind of bearing according to the number of columns loaded roller into single row, double row and four-row tapered roller bearings, such as different types of structures. Single row tapered roller bearings can bear radial load and axial load in one direction. When the bearing radial load, will produce an axial force component, so when you need another can withstand the axial force in the opposite direction of the bearing to be balanced. Ball bearing is a rolling bearing, ball ball mounted intermediate the inner and outer rims rims, able to withstand greater loads. Also known as ball bearing.

Ball bearings are mainly made up of four basic elements

Ball bearing is a rolling bearing, ball ball mounted intermediate the inner and outer rims rims, able to withstand greater loads. Also known as ball bearings.
Ball bearings are mainly made up of four basic elements: Ball (ball), the inner ring (inner ring), the outer ring (outer ring) and the holder, also called retainer (cage or retainer). General industrial use of ball bearings to meet the AISI standard, ball and ring 52100 is usually based on high-chromium steel, Rockwell hardness (Rockwell C- scale hardness) of between about 61-65. While maintaining the hardness of the ball and ring compared to low, the material with metal (such as: carbon steel, aluminum alloy) or non-metallic (eg: Teflon, PTEF, polymer materials). Ball bearing (ball bearing) than the Ceramic Ball Bearings (journal bearing) rotation friction is small, and therefore at the same speed, temperature and friction will be relatively low.

ZYS ball bearing installation method

A ZYS ball bearing installation method: press-fit: the bearing inner ring and the shaft so that a tight fit, the outer ring with the bearing hole is relatively loose fit, can be pressed press the bearing on the shaft, then the shaft along with bearing fitted together the bearing hole, when the pressure mounted on the inner end surface of the bearing pad material is made of a soft metal mounting sleeve (copper or soft steel), bearing outer ring with the bearing hole tight fit, the inner ring and the shaft is loose When fit, the bearing can be pressed into the bearing hole, then assemble the outer diameter of the sleeve seat should be slightly smaller than the diameter of the hole. If the bearing ring and the housing bore and shaft are a tight fit, installation of interior and outer ring To simultaneously pressed into the shaft and housing bore, the assembly casing shall be constructed simultaneously charging tight end face bearing inner and outer rings.
Two ZYS ball bearing installation method: heating with: by heating bearings or bearing, the use of thermal expansion close fit into a song with the installation method is a commonly used method of installation and labor-saving method is suitable for this large amount of interference bearing. installation, before loading the bearing or separable heat bearing rings into the tank uniform heating 80-100 ℃, then remove from the oil loaded onto the shaft as quickly as possible in order to prevent the cooling inner face and shoulder fit not tight, you can then fasten the rear bearing axial cooling when the bearing outer ring and light metal bearing tight fit, using heat bearing hot charging method, can be avoided with the surface by scratches. When the tank is heated by bearing a certain distance away from the bottom of the gate should have a net, or with a hook hanging bearings, can not be put on the bottom to prevent impurities entering the bearing Shen or uneven heating, the tank must have a thermometer, strict control of the oil temperature must not exceed 100 ℃, in order to prevent tempering effect, reduce the hardness of the rings.
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ZYS ball bearing properties

Deep groove ball bearing are most representative of the rolling bearing, widely used. For high speed or high speed operation, and very durable, without regular maintenance. This kind of bearing friction coefficient is small, extreme high speed, simple structure, low cost, easy to achieve high manufacturing precision. Size range and diverse, used in precision instruments, low noise motors, automobiles, motorcycles and general machinery industries, the machinery industry, the most widely used class of bearings. The main radial load, but also can withstand a certain amount of axial load.
Select a larger axial clearance radial load carrying capacity increase, when the contact angle of pure radial force is zero. When the axial force, the contact angle is greater than zero. Commonly used stamping Ribbon Cage, machined solid cage, sometimes with nylon frame.
sealed angular contact ball bearing installed in the shaft, the axial clearance in the bearing within the shaft or housing to limit the two directions of the axial displacement, it can be positioned in the bi-axial direction. In addition, the class also have some bearing self-aligning capability, when compared to shell hole tilt 2 'to 10', still work, but have a certain influence on bearing life. ZYS ball bearing cages are mostly steel stamping Ribbon Cage, a large multi-use vehicles bearing metal solid cage.
ZYS ball bearings are the most commonly used bearing. It's simple and easy to use. Mainly used to bear radial load, but increase the bearing radial clearance, with a certain angular contact ZYS ball bearing performance, can withstand radial and axial load. When should not be used in high speed and thrust ZYS ball bearings, it can also be used to bear pure axial load. With ZYS ball bearing specifications same size compared to other types of bearings, bearing friction coefficient is small, high speed limit. However, the impact of intolerance, not suitable to withstand heavy loads.

ZYS ball bearings

Super precision ball bearings are mainly made up of four basic elements: Ball (ball), the inner ring (inner ring), the outer ring (outer ring) and the holder also called retainer (cage or retainer). General industrial use of ZYS ball bearings to meet the AISI standard, ball and ring 52100 is usually high chromium steel, Rockwell hardness (Rockwell C- scale hardness) of between about 61-65. While maintaining the hardness of the ball and ring compared to low, the material with metal (such as: carbon steel, aluminum alloy) or non-metallic (eg: Teflon, PTEF, polymer materials). ZYS ball bearing (ZYS ball bearing) than the journal bearing (journal bearing) rotation friction is small, so the same speed, temperature will be relatively low friction Angular contact thrust ball bearing is a rolling bearing, ball ball mounted on inner and outer rims intermediate steel ring, can withstand a greater load. Also known as ZYS ball bearings.

Bearing type selected

When you select the bearing type, complete control of the conditions of the bearing it is critical. The following table lists the main analysis items: Selection Method
1) mounting space can be accommodated in the bearing stiffness and strength of the bearing type turbocharger bearings installation space due to the focus on the design of the shaft axis, it is generally to determine the shaft, namely bearing diameter. But Rolling a variety of sizes and types of series, should choose the most suitable bearing type.
2) Load bearing load size, direction and nature [load bearing capacity with basic rated load, said its value in the bearing dimensions table] bearing loads full of changes, such as size of the load, if only radial load, axial load one-way or two-way, and so the degree of vibration or shock. After considering these factors, again select the most suitable bearing type. In general, the radial load bearing capacity of the same diameter increasing in the following order: deep groove ball bearings <angular contact ball bearings <cylindrical roller bearings <tapered roller bearings <Spherical Roller Bearings
3) Speed ​​can adapt to mechanical speed bearing type [bearing the speed limit value of the reference speed limit represented by its value in the bearing dimensions table] bearing not only on the speed limit on the bearing type is also limited bearing size, cage type, precision grade , load conditions and lubrication methods, therefore, must consider these factors in selection. The following are mostly used for high speed rotating bearings: deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings
4) having a bearing type rotary precision desired rotational accuracy [dimensional accuracy and rotational accuracy of the bearing GB has been standardized by bearing type] spindle, gas turbines and control machines were high rotational accuracy, high speed and low friction, this It should be used when more than five Wind turbine bearing. Generally, use the following bearings: deep groove ball bearings, contact ball bearings, cylindrical roller bearings
5) Just the performance required to meet the mechanical rigidity of the bearing shaft type [when the bearing load, the contact portion of the rolling element and raceway will produce elastic deformation. "High rigidity" means a small amount of deformation that the elastic deformation] at the site of the final stage of spindle and auto deceleration devices, to improve the rigidity of the shaft, it is also necessary to increase the rigidity of the bearing. Roller bearing deformation under load than ball bearings born small. Bearing preload (negative clearance) can be improved rigidity. This method is suitable for angular contact ball bearings and tapered roller bearings.
6) is inclined relative to the inner and outer rings of the bearing inner ring and the outer ring analysis produced relative inclination factors (such as poor accuracy deflection or misalignment, shaft and housing caused by the load axis), and can adapt to this selection Conditions of bearing types. If the inner and outer rings relative inclination is too large, the bearing internal load generated due to damage. It should choose this type of bearing can withstand inclined. In general, it allows the tilt angle (or aligning angle) increasing in the following order: Cylindrical roller bearings, tapered roller bearings, deep groove ball bearings (angular contact ball bearing), spherical roller (ball) bearings
7) Installation and removal of detachable regular inspection frequency and disassembly methods dismantle frequent use separable inner and outer rings of cylindrical roller bearings, needle roller bearings and tapered roller bearings more convenient. Tapered hole aligning ball bearings and tapered bore spherical roller bearings through the use of fasteners or withdrawal sleeves can be easy assembly and disassembly. Selected mechanical type bearing structure is not the same, there will be differences in the conditions of use of the bearing, its performance requirements vary, but in general, the use of an axle bearing not less than two. Moreover, in order to facilitate the axial positioning, the use of a bearing is used mostly fixed end bearing, and the rest as a free end bearings. The following table lists select a fixed end and the free end of the bearing structure. Applies the bearing type fixed-side bearing for the bearing axial positioning and fixing selection both radial and axial load bearing to withstand axial load, install also be required to consider the appropriate size of the axial load strength .

Rolling common three kinds of failure modes

Rolling in the course, there are many ways lead to rolling bearing failure will occur, and Rolling daily use, the most common failure mode there are three: fatigue, plastic deformation and abrasion, for the failure of these three forms of Chinese turbocharger bearings net Rolling details described below.
1. Fatigue: For rotating bearings, fatigue pitting is the main failure mode, which is mainly for life calculation, and then make the static strength check, if necessary.
2, plastic deformation: For non-rotating, low speed or oscillating bearing, local plastic deformation is the main failure mode, which is mainly for static strength calculation.
3, abrasive wear: For high-speed bearing tester , fever and even gluing is the main failure mode, which in addition to outside life calculation should check the speed limit.

Full complement cylindrical roller bearings use

Full complement cylindrical roller bearings because there is no cage that can accommodate up roller, and therefore suitable for very heavy radial load bearing, in addition to radial loads, but also bear certain axial load. But it allows the operating speed is much lower than with cage Cylindrical roller bearings. Single-row full complement cylindrical roller bearings are also allowable angle error between the inner and outer rings have a few minutes of arc.
Full complement cylindrical roller bearings to withstand heavy loads and design. In the same breadth, the bearings and traditional bearings with cage, compared with a high load capacity, small radial section, you can save space, but the speed is relatively low. In order to make the bearing work, in the case of continuous operation, the Cross roller bearings must bear a certain minimum load, namely C / P <25. Otherwise it will aggravate frayed due to lack of lubrication and high-speed operation. All bearing measurement in the outer ring has a lubrication groove and lubrication holes.

Precision Tapered Roller Bearings

In some overloaded and there are certain requirements for speed machine applications where snagging --- such as forgings, oil pipeline threading machines, heavy lathes and milling machines, select precision tapered roller bearings are an ideal solution . Tapered Roller roller bearing is line contact is designed so that it can provide high rigidity and load bearing spindle; In addition, the tapered roller bearing is a pure rolling bearing design, it is a good lower bearing operation torque and heat, thus ensuring the spindle speed and accuracy. Tapered roller bearings can be adjusted during installation the axial preload (clearance), which allows customers throughout the life of the bearing to better optimize the bearing clearance adjustment.
Furthermore, in some inner block edges speeds greater than 30 m / sec high-speed applications, Four-Row Taper Roller Bearings some special design can meet the requirements. Bearing a plurality of ribs in the axial direction of the lubrication holes, can be circulating oil lubrication or oil mist lubrication, oil can be distributed to the centrifugal force roller and rib contact area, so that it can more fully lubricated bearings, bearing speed increase . The Hydra-Rib hydrodynamic bearing a floating wall is designed to optimize preload spindle system designed floatable wall bearing in contact with the roller large end, unlike common bearing a fixed inner wall; and The floating ribs from the "pressure" system location, so we can keep the bearings at various operating conditions can play a most excellent performance, and has been successfully used in domestic customers.
For tapered roller bearings in terms of the accuracy of selection, ISO P5 grade bearings are used in conventional lathes and milling machines; if the machining centers, grinders and other applications, often choose ISO P4 or more of precision bearings. Spindle design, the more common layout tapered roller bearings have two. The first is the use of a front and rear of each tapered roller bearings, and face to face installation; compact type of design structure, rigidity and ease of installation and adjustment.
The second is the use of two four row cylindrical roller bearings mounted opposite the front end of a main shaft, while the rear end uses a double outer ring, the inner ring of the bearing two single (TDO) to use as a floating end; because of the floating capability, this type of design can good withstand axial thermal expansion of the spindle and high rigidity to ensure the accuracy of machine tools.

Classification of bearings by working principle

Classification of bearings by working principle


The bearing type is the bearing type used by the air cooling radiator fan. In mechanical engineering,  Four-Row Taper Roller Bearing the type of bearing is very much, but used in the radiator products bearing the form in accordance with the basic working principle of the classification so three using sliding sleeve bearing sleeve bearing and rolling friction of the ball bearings (ball bearing) and two bearings form with the use of the three hybrid.

Major radiator manufacturers in bearings with the launch of the new technology in recent years, such as magnetic bearing, fluid protection system bearings, hydraulic bearings, rifle bearing, fatigue testing machine nano ceramic bearing are also on the above the basic form of bearings improved, basic working principle is no change.

The world's largest bearing manufacturers Reading

SKF Chinese transliteration of the name "SKF", insert ball bearing ,Company Headquarters: Gothenburg, Sweden; SKF brand still stands for the highest quality rolling bearings, but now the real sense, far more than ever before.

SKF bearing production accounted for 20% of the world's total output of similar products. Group was founded in 1907, in the rolling bearing and seals business is a global leader in products, customer solutions and services suppliers, SKF early in 1912 to enter the Chinese , turbocharger bearings in Shanghai established the first office in China in 1916 set up the first sales company, SKF in 1986 and returned to China, in Shanghai set up a consignment station, and another in Shanghai, Beijing, Guangzhou, Chengdu, Dalian, Nanjing, Xi'an, Wuhan set up offices in Beijing and set up a consignment station.

Three kinds of bearing forms,Sleeve Bearing,Ball Bearing and two kinds of bearing forms mixed

The bearing type is the bearing type used by the air cooling radiator fan. In mechanical engineering, the type of bearing is very much, Wind turbine bearing but used in the radiator products bearing the form in accordance with the basic working principle of the classification so three using sliding sleeve bearing sleeve bearing and rolling friction of the ball bearings (ball bearing) and two bearings form with the use of the three hybrid.

Ball bearing changed the bearing friction, rolling friction is adopted, the more effectively reduces the friction phenomenon between the bearing surface, effectively enhance the service life of the fan bearing, high speed bearing and therefore will prolong the service life of the radiator. The disadvantage is that the process is more complex, resulting in higher cost, but also bring higher working noise.

Angular contact ball bearings and cylindrical roller bearings under load

Always bearing the opposite direction of the axial load, mounting angular contact ball bearings. Machine tool spindle angle contact ball bearing contact angle for 15 degrees and 25 degrees two kinds, Wind turbine bearing the contact angle of 15 degrees for high speed, axial load is small.

Cylindrical roller bearings can bear large radial load, can not bear the axial load. Single and double row cylindrical roller bearings, sealed angular contact ball bearing precision machine tool spindle is the most common cylindrical roller bearing inner hole with 1:12 taper double row cylindrical roller bearings NN30K (old code 3182) series.

Lubricant and application of wind turbine bearing

Wind turbine bearing lubricant is special organic thickener thickening synthetic oil, and add a variety of high-performance additives and refined oil.

Wind turbine bearing lubricant characteristics,
Excellent high temperature performance, especially high-temperature performance particularly advantageous;
Excellent water resistance, rust resistance and oxidation resistance;
Good oxidation resistance, sealed angular contact ball bearing to ensure long-term performance at high temperatures;
Good corrosion resistance, to ensure that the bearing parts are not corroded.

Applications,
Fan bearing lubricant for high temperature, high or cold temperature zone and field work over rolling bearings above 200 ℃ wide temperature range work. Such as air motors, electrical, clutch thrust bearings, high temperature fan, racing wheel bearings, plastic stretching tenter, polyester heat setting machine, resin finishing machine, molten salt pump motor, Cross roller bearing loop steamer machine, high temperature dyeing tanks, steam it machine, shrink machines and other high-temperature operation running bearing lubrication.

Temperature range, -60 ℃ ~ + 250 ℃, short-term up to 300 ℃.

Dust into the wind turbine bearing,increasing noise

In recent years, the major bearing manufacturers in terms of the radiator's new technology, Wind turbine bearing , such as magnetic bearings, water bearing, bearing core, to Fu bearings are also on top of the basic forms of bearings made to improve the operation of the principle did not change .

Ordinary air-cooled radiator oil bearings and ball bearings are mainly used.And this bearings over time, due to the oil seal (computer radiator products are impossible to use high-grade seals, generally is ordinary paper seals), insert ball bearing ,oil will gradually evaporate and dust will enter the bearing, causing the fan slow speed, noise increases and other issues, but also because of a serious bearing wear caused by severe vibration caused by eccentric fan. These phenomena, Deep groove ball bearing either open seal refueling, or to purchase another new fan only eliminated.

ZYS wind turbine bearing

Bearing type is the air-cooled heat sink fan-shaped bearing type used. In mechanical engineering,Wind turbine bearing ,bearing class shaped very much, but also on the radiator so few products in use, the use of sliding friction sleeve bearings and use a rolling bearing friction ball bearings and two forms of combining these three.


The use of oil-bearing sliding friction sleeve bearings, when used as a lubricant and lubricant DRA initially run using low noise,angular contact thrust ball bearing , low manufacturing costs, but this badly worn bearings, ball bearing life than there is a big gap.

Deep groove ball automotive bearing are the most commonly used rolling bearings. It's simple and easy to use. Mainly used to bear radial load, but increase the bearing radial clearance, with certain features of the angular contact ball bearings can withstand radial and axial joint load. When should not be used in high speed and thrust ball bearings, can also be used to bear the pure axial load. Deep groove ball bearings with the same sizes of other types of bearings, such bearings friction coefficient, high speed limit. But the impact of intolerance, unfit to bear heavy loads.
In many cases, bearing corrosion will occur, leading to corrosion of bearings There are many reasons, the most common in our daily lives mainly in the following several factors.
1) due to poor sealing means is penetrated moisture, dirt, etc.;
2) bearing long-term need, more than rust period, the lack of maintenance.
3) the metal surface roughness is relatively large;
4) contact with a corrosive chemical media, bearing cleaning is not clean surface dirt buildup, or sweat hand contact bearings, the Hydrodynamic Bearing cleaning, packing or installation is not timely, long-term exposure to the air, water and air by the invasion contamination;
5) the ambient temperature and humidity and exposure to various environmental media; rust inhibitor failure or quality does not match the requirements.

Paired angular contact ball bearings can bear radial

Paired angular contact ball bearings can Hydrodynamic Bearing radial load mainly radial and axial joint load can also be subject to pure radial loads. Tandem configuration can only bear axial load in one direction, the other two configurations can withstand axial load in either direction. This type of bearing is generally matching pairs by the manufacturer to submit a user after installation preload interference, rings and balls in the axial pre-load condition, thereby enhancing the entire group as a single bearing support stiffness and rotation accuracy.

Angular contact ball bearings

Angular contact ball bearings: 7000C-type (α = 15 °), 7000AC type (α = 25 °) and 7000B (α = 40 °) of several types. This kind of bearing lock port on the outer ring, the inner and outer rings can not be separated in general, can withstand radial and axial joint load and axial load in one direction. Axial load capacity from the contact angle, the contact angle is larger, the ability to withstand high axial loads. This kind of Rolling mill bearing can limit the axial displacement in one direction shaft or housing.
Higher speed limit contact ball bearings can support radial load and axial load can also be subject to pure axial load, axial load capacity by the contact angle and the contact angle increases with the increase.

Universally matchable bearings are specially processed

Universally matchable bearings are specially processed, when the vibration measurement is installed close to each other, any combination can achieve the established internal clearance or preload, and the average load distribution, without the use of shims or similar devices.
Paired bearing applications: When insufficient load carrying capacity of a single bearing (using channeling associated configuration) or when to bear the role of joint load or axial load in both directions (with back to back or face to face configuration).
2, the basic design of the bearing (can not be used as general-purpose with the group), is used to configure the way the individual bearings
Single row angular contact ball high precision bearing are mainly applied basic design of only one bearing configuration at each location. Its width and the amount of outstanding ordinary level tolerances. Therefore not suitable for the two single row angular contact ball bearings close to the installation.

If paired installation

If paired installation, so that one pair of bearing outer ring relative to that wide side face of wide and narrow side facing the narrow end. This can avoid additional axial force, and the shaft or housing to limit axial clearance within the range in both directions.
Its inner and outer ring raceway relative displacement on the horizontal axis, so it can support radial load and axial load - combined load (single row angular contact ball surface profile measurement can withstand axial load in one direction, so often paired installation).
Cage made ​​of brass, synthetic resins, etc., depending on the bearing forms, and application conditions.
More angular contact ball bearings are manufactured abroad bearing manufacturers, domestic applied to imported equipment such as more angular contact ball bearings 3204RS, etc.
Think back to back, back to front contact contact more simple, narrow side out, including wide-brimmed, another broadside included, narrow home, is back to back contact.

Single row angular contact ball bearings can withstand axial load in one direction

Single row angular contact ball bearings can withstand axial load in one direction, while the radial load, will cause additional axial force. And the only limit axial displacement in one direction shaft or housing. Angular contact ball bearings contact angle of 40 degrees, so you can bear large axial load. Angular contact ball grinding spindle are non-separable design, inner and outer rings on both sides of the shoulder uneven. In order to improve the load bearing capacity, in which the shoulder side of the processing will be lower, so that the ball bearings can be put more.
Double row angular contact ball bearings can withstand greater radial load mainly radial and axial joint load and moment load limit axial displacement both axes. Mainly used to limit the axial displacement of the shaft and housing components in a two-way double row angular contact ball bearings, the outer ring can be tilted between finite, allowing the tilt angle depends on the bearing internal clearance, bearing size, interior design and acting on forces and moments on the bearings, and the maximum allowable tilt angle should ensure that the bearing will not generate excessive additional stress. If the bearing inner and outer angle of inclination between, will affect Bearing life testing machine life, also causing loss of precision bearings running, running noise increases. Double row angular contact ball bearings generally use nylon cage or solid brass cage. When the double row angular contact ball bearings installed should be noted that while bearings can withstand axial load, but if one side of the ball gap, you should be careful not to let the main axial load side through the gap Mizobe. Bearings should pay attention to the side without the ball gap to bear the main load raceway.

XR series of cross-tapered roller bearings designed

XR series of cross-tapered roller bearings designed to provide high accuracy and rigidity of rotation in a smaller space, dramatically saving material costs. These bearings are the two rotary table bearing raceways and rollers are mounted together cross at right angles, adjacent roller in the opposite direction, is mounted between the roller and roller isolation block, the roller is also equipped with support pads this allows the rollers to fit into the two half-columns in the same space. Angle and taper bearing geometry makes bearings effective span than the actual width of the bearing itself several times.
XR series Four-Row Cylindrical Roller Bearing for high-speed machine tool applications such as vertical boring and vertical grinders. Many are also particularly suitable for the limited space, high precision rotating equipment.

Crossed roller bearings internal structure was 90 ° roller arranged perpendicular

Crossed roller bearings internal structure was 90 ° roller arranged perpendicular cross,
Spacing between rollers fitted retainer or isolation block to prevent roll-tilt roller mill mutual observation between child, effectively preventing the increase in rotational torque. Further, one of the rollers does not occur or the latch-up phenomenon of the contact; same time as the inner and outer ring is a split structure, the gap can be adjusted even if the preload is applied, can be obtained with high accuracy rotation.
2, the operation simplifies installation
Divided into two parts of the outer or inner ring, and after loading the roller holder is fixed together, so when you install operation is very simple.
3, bear large axial and radial loads
Because the rollers are arranged vertically spaced retainer by 90 ° to each other in a V-shaped groove raceway, this design makes cross roller angular contact thrust ball bearing can withstand higher radial load, axial load and moment load and all load direction.
4, substantial savings in installation space
Small, thin structure of particular cross-roller bearing inner and outer rings is a minimum size is close to the limit of small size, and has high rigidity, so the most suitable for the joints of an industrial robot or a rotary portion of the rotary machining center versatile table, robot rotating part, precision rotary tables, medical equipment, measuring instruments, IC manufacturing devices.
High 5 speed capability
Reducing the length of the shaft 6 and the processing cost, result in a limited thermal expansion changes the geometry

Free travel is too small or subject to excessive load times.

Free travel is too small or subject to excessive load times. Upon request, the general clutch lever clearance between the bearing and the separation of 2.5mm more appropriate to reflect on the clutch pedal free travel for 30 ~ 40mm, free travel is too small or no free travel, will make the separation lever and separation Slewing bearing in a normally engaged state. According to the principle of fatigue damage, bearing work longer, more serious damage; load times by the more, the more easily separated bearing fatigue damage. And the longer working hours, the higher the temperature of the bearing, the easier burning, reduce separation bearing life.
(2) whether the separation was smooth adjustment lever, release fork is deformed, release bearing return spring is good, but also has a great influence on the damage to the separation of the bearing. Separate adjustment is not flat, isolated fork deformation, release bearing spring does not return, will result in the clutch release bearing against the work, so that the state is always in work release bearing, the temperature rising, burn easily release bearing, reducing the separation bearing life.

Clutch release bearing failure

Clutch release railway bearing failure
(1) Operating temperature is too high lead to overheating. Many drivers in turning or deceleration, often half-pedal clutch, some Guadang rear foot on the clutch pedal also; Some vehicles free travel adjustment is too large, making the clutch is not complete, in a semi-bonding, semi-isolated state, this causing the state of the friction generated between the sliding friction plate and flywheel, a large amount of heat transmitted to the bearings, the bearing is heated to a certain temperature, the melted grease or diluted flow, the temperature of the bearing to further improve the separation, when the temperature reaches a certain degree will burn bad release bearing.
(2) the lack of grease and abrasion. Clutch release bearings with grease lubrication. Repair personnel in practical work release bearing lubrication problem is easy to ignore, and do not release bearing lubrication during installation, causing the clutch release bearing starvation. No lubrication or less the amount of wear of bearings lubricated separate release bearing lubrication is often several times to several times. Wear increases, the temperature will increase greatly, so more damage to the release bearing. So in the repair process, the installation of the clutch release bearing lubrication to check, timely lubrication maintenance.

XR series of cross-tapered roller bearings designed to provide high accuracy and rigidity of rotation in a smaller space

XR series of cross-tapered roller automotive bearing designed to provide high accuracy and rigidity of rotation in a smaller space, dramatically saving material costs. These bearings are the two bearing raceways and rollers are mounted together cross at right angles, adjacent roller in the opposite direction, is mounted between the roller and roller isolation block, the roller is also equipped with support pads this allows the rollers to fit into the two half-columns in the same space. Angle and taper bearing geometry makes bearings effective span than the actual width of the bearing itself several times.
XR series bearings for high-speed machine tool applications such as vertical boring and vertical grinders. Many are also particularly suitable for the limited space, high precision rotating equipment.

Crossed roller bearings internal structure was 90 ° roller arranged perpendicular cross

Crossed roller Wind turbine bearing internal structure was 90 ° roller arranged perpendicular cross,
Spacing between rollers fitted retainer or isolation block to prevent roll-tilt roller mill mutual observation between child, effectively preventing the increase in rotational torque. Further, one of the rollers does not occur or the latch-up phenomenon of the contact; same time as the inner and outer ring is a split structure, the gap can be adjusted even if the preload is applied, can be obtained with high accuracy rotation.
2, the operation simplifies installation
Divided into two parts of the outer or inner ring, and after loading the roller holder is fixed together, so when you install operation is very simple.
3, bear large axial and radial loads
Because the rollers are arranged vertically spaced retainer by 90 ° to each other in a V-shaped groove raceway, this design makes cross roller bearings can withstand higher radial load, axial load and moment load and all load direction.
4, substantial savings in installation space
Small, thin structure of particular cross-roller bearing inner and outer rings is a minimum size is close to the limit of small size, and has high rigidity, so the most suitable for the joints of an industrial robot or a rotary portion of the rotary machining center versatile table, robot rotating part, precision rotary tables, medical equipment, measuring instruments, IC manufacturing devices.
High 5 speed capability
Reducing the length of the shaft 6 and the processing cost, result in a limited thermal expansion changes the geometry

Cross roller bearings

Cross roller super-precision bearing, because the inner or outer ring is split, and the interval after loading the roller cage, and Cross-Roller Ring secured together to prevent separation from each other, so when you install the Cross-Roller Ring Operation simple. Since the roller is staggered, so only one set of Cross-Roller Ring can withstand the loads in all directions, compared with the traditional model, rigidity increased by 3 to 4 times. Meanwhile, due to cross roller bearing inner or outer ring is constructed of two split, adjustable bearing clearance, even if they are applied preload can be obtained with high precision rotary motion.

Crossed roller bearings are roller between the inner and outer wheel....

Crossed roller surface profile measurement are roller between the inner and outer wheel intervals intersecting at right angles to each other arranged. They can withstand the load from all directions (such as an axial thrust or momentum load, etc.). Due to the roller surface into line contact with the rail, therefore, the possibility of bearing a load and elastic deformation is small. This type of bearings are widely used in industrial automation, such as robots, machine tools and medical facilities, etc., need high rigidity, compact and high-speed still ensuring accurate of occasions.
In cross roller bearings, cylindrical roller in was due to a 90 ° V-shaped groove raceway is vertically aligned with each other through a spacer retainer, so a cross roller bearings can bear radial load, axial load and load torque loads in all directions and so on. Minimum size of the inner and outer rings are miniaturized, in particular close to the limit of a very thin type of compact size, and has high rigidity, it is most suitable for the joint portion or a rotating portion of the industrial robot, the rotary table of the machining center, use the rotating portion of the manipulator, precision rotary tables, medical equipment, meters, IC manufacturing equipment, etc..

Support base has eight models of standard ball screw shaft end bars inventory of finished products

Support base has eight models of standard ball screw shaft end bars inventory of finished products,Bearing life testing machine , prepared a standardized support base EK, EF, FK, FF type, the general preparation of standard ball screw bar support base AK, AF , BK, BF type.
2 fixed side fitted with preload adjustment angle JIS5 grade level or P0 contact ball bearings, screw bars to follow the choice to do the most economical grade mix
3 support side using deep trench ball bearings.
4 supporting base EK, BK, FK and AK-type internal bearings contain the right amount of lithium soap grease, with a special seal. Therefore, long-term use of these models.