Technical performance of joint bearings

- Aug 09, 2019-

First of all, the basic concept of joint bearings

 

1. Radial dynamic load rating: The radial load when the dynamic stress of the working surface in the joint bearing reaches the maximum allowable stress.

 

2. Axial dynamic load rating: The axial load when the dynamic stress of the working surface in the joint bearing reaches the maximum allowable stress.

 

3. Lifetime: The total number of times the joint bearing oscillates when the friction coefficient of the joint bearing reaches the specified limit value or the joint bearing wear exceeds the specified limit value.

 

4. Radial Equivalent Dynamic Load: A constant radial load under which the contact stress of the working surface in the joint bearing is equivalent to the actual load. For radial joint bearing, angular contact

The joint bearing and the rod end joint bearing are used to calculate the service life of the joint bearing when subjected to radial load and axial load. In general, it is recommended not to exceed 30% of the radial load for the axial load of the radial and angular contact joint bearings. The axial load of the rod end joint bearing is recommended not to exceed 20% of the radial load.

 

5. Axial equivalent dynamic load: A constant axial load under which the contact stress of the working surface in the joint bearing is equivalent to the actual load. It is used to calculate the service life of joint bearings when the thrust joint bearing is subjected to both radial and axial loads. In general, the radial load on thrust joint bearings is recommended not to exceed 50% of the axial load.

 

6. Swing angle β: The angle between a certain diameter of the swinging ferrule and the two extreme positions.

 

7. Pendulum: When a point on the swinging ring of the joint bearing swings by 2β, it is a pendulum.

 

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