TIMKEN bearing preload related knowledge
If you want to understand the bearing in depth, you must go through a painstaking learning process. Because this knowledge is profound and profound, now I will briefly introduce some knowledge of timken bearings, and I hope that it will help you in your future work.
The significance of TIMKEN bearing preload
The preload of the TIMKEN bearing is used to allow the bearing to be used with a negative clearance. This method of use is called preloading. It is more suitable for radial thrust ball bearings, tapered roller bearings, and the two bearings are used opposite each other to become a bearing that can adjust the clearance.
First, the main purpose of TIMKEN bearing preload:
1. Suppress the runout of the shaft while correctly determining the position of the radial direction and the axial direction of the shaft.
2. Improve the rigidity of the bearing. The main shaft of the machine tool is used for bearing, and the differential gear of the bicycle is used for the TIMKEN imported bearing.
3. Prevent vibration in the axial direction and abnormal sound caused by resonance. Suitable for bearings for small motors.
4. Suppress the rotation and sliding of the rolling elements, the revolutionary sliding and the self-rotating sliding. Radial thrust bearings, thrust ball bearings for high speed rotation.
5. For the ferrule, keep the correct position of the rolling element. Thrust ball bearings, thrust spherical roller bearings, when used in the horizontal axis.
Second, TIMKEN bearing preload method:
1. In order to carry out the preload, the method of adjusting the combined bearing of the difference in width or axial clearance beforehand is used.
2. Use an oversized gasket and shim to give the bearing a preload.
3. Fasten the screw that can adjust the axial direction clearance and the method after the nut. In this case, in order to obtain an appropriate preload amount, the TIMKEN imported bearing should be adjusted while measuring the starting friction torque.
The so-called constant pressure preload is a method in which a coil spring or a disc spring is used to give a proper load to the bearing. In use, the relative position of the bearing, even if there is a change, the method of preloading.
In the use of TIMKEN bearings, the relative load position can be kept constant even if there is a change in the relative position.
The preload line diagram of the imported bearing after constant pressure preload, the rigidity of the preload spring is usually small compared with the rigidity of the bearing, so the displacement of the spring is about parallel with the horizontal axis.
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