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Technical requirements for finished bearings

 

1. The size and rotation accuracy tolerance of the finished bearing shall meet the relevant requirements of GB/T307.1, JB/T10336 and this agreement.

2. The residual magnetic field requirements should meet the requirements of JB/T6641 standard

 

3. Bearing clearance requirements: We require the detection of axial clearance, and the testing instrument is X193, with an upper load of 20KG and a lower load of 10KG.

 

4. Bearing cleanliness

After cleaning the finished bearing, the average set of fouling content index allowed by its cleanliness shall be implemented according to the JB/T7050 standard.

5. Rotation flexibility of finished bearings

After the bearing is demagnetized and cleaned, it should be checked for rotational flexibility and alignment. The rotation process needs to be light, flexible and smooth, and can be maintained for a certain period of time without excessive vibration and sudden braking. There should be no noise during the rotation process, including no dust noise and cage impact sound. The self-alignment is good, and the steel ball is not allowed to fall out of the cage pocket hole.

6. Roughness. The surface roughness of the bearing ring should meet the requirements of the drawing, and the one not marked on the drawing should meet the requirements of GB / T 307.3.

7. Bearing assembly quality

7.1 After the finished bearing parts are assembled, they should rotate flexibly and smoothly, without blocking, interference or abnormal channeling.

7.2 After the cage is pressed, no obvious dislocation, strain, crack, deformation and other defects are allowed, and the cage shall not touch the ferrule when it is in the limit position.

7.3 The finished bearing should not have the phenomenon of lack of steel balls, mixed steel balls, and falling steel balls.

8. The performance indicators such as life, ultimate speed, friction torque, rigidity, noise and other performance indicators of the bearing should meet the requirements of our drawings and corresponding standards.

If you want to know more bearing information,please contact us :

sales@cwlbearing.com

service@cwlbearing.com