How to choose the parameters of powder metallurgy bearings

Nov 08, 2022

How to select the parameters of powder metallurgy bearings? We know that this kind of precision powder metallurgy parts are generally customized by selecting the corresponding parameters. What are the parameters of powder metallurgy bearings and how should they be selected? Qinhuangdao Zhongwei Precision Powder Metallurgy Factory will share with you:

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1. Width ratio: because the clearance at both ends of the shaft sleeve is generally smaller than the middle part, the shaft sleeve should not be too narrow;

2. Press in interference: the shaft sleeve shall be pressed into the bearing seat with a press, and hammering is not allowed;

Powder metallurgy bearing

3. The outer diameter of the shaft sleeve and the bearing seat hole shall be interference fit;

4. When selecting the bearing seat aperture tolerance, the maximum interference shall not be greater than twice the average interference, and the minimum interference shall not be less than half the average interference;

5. After the shaft sleeve is pressed into the bearing seat, the hole diameter of the shaft sleeve will shrink. When determining the journal size, the shrinkage amount should be taken into account. The shrinkage amount of the shaft sleeve hole diameter is related to the interference amount, the inner and outer diameter size of the shaft sleeve and the porosity;

6. If the elasticity of the material is large and the stiffness of the bearing seat is large, the aperture shrinkage shall be calculated according to the maximum value, otherwise, the aperture shrinkage shall be calculated according to the smaller value.

This is the introduction to the parameter selection of powder metallurgy bearings. If you want to know how to select the parameters of powder metallurgy bearings, you can take a good look at the above contents. I hope this article can help friends in need