Double-direction angular contact thrust ball bearings

ZYS double direction thrust ball bearings refer to angular contact thrust ball bearings, which have two dimension series, 2344 and 2347. 2344 series are fit for the small end of taper hole of double row cylindrical roller bearings, with 2347 series for the large end.
As for ZYS  double direction angular contact thrust ball bearing, one circumferential oil groove and three symmetric lubrication holes are set up in the middle of outer ring. Lubricant is lead into the space between the two-row rolling elements and cage assemblies, thus lubrication will be realized through the rotation of bearing.
ZYS angular contact thrust  bearings have such advantages as high precision, good rigidity, low temperature rise, high speed and convenient fixing and removing.

ZYS slewing bearing

ZYS slewing ring bearing series have five types: single-row four point contact ball slewing bearing, single-row cross roller slewing bearing, double row different ball diameter slewing bearing, three-row cylindrical roller slewing bearing and roller&ball combination slewing bearing. All of these slewing ring bearings can be divided into bearings without gears, bearings with internal gears and bearings with external gears.

Single-row four point contact ball slewing bearings Performance

ZYS single-row four point contact ball slewing bearings have such features as upport high dynamic loads, transmitting axial and radial forces simultaneously as well as the resulting tilting moments.
Applications: Hoisting, mechanical handling, general mechanical engineering and etc. 

ZYS Aerospace bearing

ZYS plays an leading role in aerospace bearing industry of China,We has successfully accomplished the bearing assemblies for “Dong fang hong” series man-made satellite,manned spacecraft series from “Shenzhou Ⅰ” to “Shenzhou Ⅹ”,“Chang’E” lunar exploration program,successful docking from “Shenzhou Ⅷ” and “Shenzhou Ⅸ” to Tiangong target aircraft.
We have rich experience and advantages in manufacturing the special bearings and satellite attitude control momentum wheel,which perform under special conditions,such as high temperature,low temperature,high speed,heavy duty,vacuum,radiation protection,anti-magnet,sensitiveness,high precision,long life and other special working conditions.

High precision angular contact ball bearings performance

ZYS angular contact ball bearings can bear radial load and one direction axial load. When the bearing withstands radial loads, axial force will be generated on inner ring. Therefore, the single-row angular contact ball bearings are often used with other bearings which can withstand axial load in the opposite direction. That is, angular contact ball bearings are commonly used in pair, or in groups with three, four and even five bearings.
1. Contact angles
The contact angles of ZYS angular contact ball bearings for machine tool are 15° and 25°. The bearing with 15° contact angle is used when the high speed and light axial load are needed, while the 25° contact angle bearing should be adopted on the contrary.
2. Four dimension series
The precision angular contact ball bearings for spindles have four dimension series, 718, 719, 70 and 72. With the same inner diameter, the outer diameter and the width of 718, 719, 70 and 72 increase in sequence.
3. Application:
•Machine tool spindle
•high-frequency motor
•Robot technology
•gas turbine
•centrifuge
•small-size automobile front wheels
•differential pinion shaft
4. Advantages:
As an important type of  machine tool bearing, ZYS angular contact ball bearing has the following advantages:
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;
•The speed performance is outstanding
•Unique heat treatment process allows products to achieve the best dimensional stability and rigidity, so as to reduce wear and tear;
•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.

ZYS Medical Dental Handpiece Bearing

High speed dental drill bearing is the heart of high speed dental handpiece. 17 years ago, ZYS was the first one to devote in its design and new material use. ZYS dental drill bearing can give a stable performance as 400 thousand revolutions per minZYS (RPM), which has led dental treatment to a painless era.

S418 and S718 series dental drill bearing, the ferrule and balls are made of 440C stainless steel. ZYS also makes silicon nitride ceramic ones according to customer request. Currently, we are using stainless steel balls from Japan and Si3N4 silicon nitride ceramic balls from Saint-Gobain (USA).

We use super resin material with titanium fibers to make ZYS’s self-developed S418 series dental drilling bearing support frame. Since the hardness of titanium fiber is much lower than fiber glass, it protects the counterpart from friction. We also added some portion of solid lubrication in this resin to reduce friction and let the bearing endure longer friction under high speed rolling. The lubrication capability of this material is quite suitable for dental drilling bearings to take high temperature and high pressure steam sanitization time after time, even in oilless condition.

     Because of the low friction of ZYS dental drilling bearings, it consumes less power but produces strong output performance. It also saves time and man power, preferred by many dental experts.

ZYS Precision bearing instruments

Our precision measuring instruments are applicable for all kinds of bearing measurements. We also supply other specialized precision instruments, such as induction heaters and degaussing equipments for bearings.

ZYS Machine tool bearings

Machine toolZYS precision angular contact ball bearings consist of high-precision angular contact bearings (standard series),super high-speed angular contact ball bearings,high-speed sealed angular contact ball bearings and high-speed spindle bearings.
The inner ring,outer ring and rolling elements of bearing under normal working conditions are made of high carbon chromium bearing steel.To meet the special requirements,such as super high speed,wear-resisting,low temperature rising,long life and high reliability etc.,it’s suggested to use hybrid ceramic ball bearings.
ZYS precision hybrid bearings with ceramic ball (HQ1) can significantly improve the speed,rigidity,reliability,and productivity of machine tools,and greatly reduce the friction heat,then extend the service life of host machine etc.
Spindles also play an important role in improving the production efficiency and machining quality.Up to now,ZYS has developed 8 groups,20 series and more than 200 varieties of high-frequency spindles.The rated speeds are from 1,500r/min to 150,000r/min.High-speed precision bearings and air static pressure bearings are used as main support.Lubrications include grease,oil mist,oil gas,etc.
ZYS precision angular contact ball bearings consist of high-precision angular contact bearings (standard series),super high-speed angular contact ball bearings,high-speed sealed angular contact ball bearings and high-speed spindle bearings.The inner ring,outer ring and rolling elements of bearing under normal working conditions are made of high carbon chromium bearing steel.To meet the special requirements,such as super high speed,wear-resisting,low temperature rising,long life and high reliability etc.,it’s suggested to use hybrid ceramic ball bearings.ZYS precision hybrid bearings with ceramic ball (HQ1) can significantly improve the speed,rigidity,reliability,and productivity of machine tools,and greatly reduce the friction heat,then extend the service life of host machine etc.Spindles also play an important role in improving the production efficiency and machining quality.Up to now,ZYS has developed 8 groups,20 series and more than 200 varieties of high-frequency spindles.The rated speeds are from 1,500r/min to 150,000r/min.High-speed precision bearings and air static pressure bearings are used as main support.Lubrications include grease,oil mist,oil gas,etc.

ZYS Service on bearing testing

We are sincerely to provide you with the following services on bearing testing:
(1) Research and development of all types of bearing testing machines, such as the durability test, life test, performance test and special test of special bearings.
(2) The planning construction project of bearing laboratory and the skill training of test personnel.
(3) Proving all types of bearing testing machines and the transfer of bearing testing technical achievement.
(4) Accepting the research and establishment of testing technology, regulations and standards of all special bearings.
(5) Accepting the development of all kinds of non-standard equipments and control system, and accepting all kinds of software programming.
(6) Accepting the development of all kinds of non-standard equipments and control system, and accepting all kinds of software programming.