Single Row Angular Contact Ball Bearings

High Precisoin Chrome Steel Angular Contact Ball Bearing 7004 7004B 7004C Bearing 20*42*12mm for CNC

High Precisoin Chrome Steel Angular Contact Ball Bearing 7004 7004B 7004C Bearing 20*42*12mm for CNC
SKF 7004 bearing
Product Details

High Precisoin Chrome Steel Angular Contact Ball Bearing 7004 7004B 7004C Bearing 20*42*12mm for CNC


Product Description                                                                                   


7004 7004B 7004C

Angular contact ball bearings, super-precision - 7004.png


 Email:office@okbearing.com ,WhatsApp: +86 18678888969


Angular contact ball bearing uses axially asymmetric races. An axial load passes in a straight line through the bearing, whereas a radial load takes an oblique path that tends to want to separate the races axially. So the angle of contact on the inner race is the same as that on the outer race. 
Angular contact bearings better support "combined loads" (loading in both the radial and axial directions) and the contact angle of the bearing should be matched to the relative proportions of each. The larger the contact angle (typically in the range 10 to 45 degrees), the higher the axial load supported, but the lower the radial load. In high speed applications, such as turbines, jet engines, and dentistry equipment, the centrifugal forces generated by the balls changes the contact angle at the inner and outer race. Ceramics such assilicon nitride are now regularly used in such applications due to their low density (40% of steel). These materials significantly reduce centrifugal force and function well in high temperature environments. They also tend to wear in a similar way to bearing steel—rather than cracking or shattering like glass or porcelain.
Most bicycles use angular-contact bearings in the headsets because the forces on these bearings are in both the radial and axial direction.

Type: 
1). Single row angular contact ball bearings 
2). Double row angular contact ball bearings 
3). Four-point contact ball bearings 

4).Bearing angle:A(30°)、 AC(25°)、 B(40°) 、C(15°)

Mounting :

/DB: Mount in duplex, back to back 
/DF: Mount in duplex, face to face 
/DT: Mount in duplex, tandem 
Tolerance & Precision.
Accuracy from low to high is expressed as P0 ( general ), P6 (P6X), P5, P4, P2

Cage

steel cage, copper cage, nylon cage, iron cage.


jrdb bearing

Feature: 
1) Load capacities are higher than deep groove ball bearings of same dimensions 
2) Used for bearing radial-axial combined loads or pure thrust loads
3) Low operating friction and high limiting speed  

jrdb bearing




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Prodution Process

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Aimee

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