What are the Bearings Commonly Used in Machine Tool Spindles?

1. Deep groove ball bearings: these bearings are usually used only to bear radial load. Clearance can not be adjusted, mainly used in the precision requirements are not too high, do not need to preload the occasion, such as drilling machine spindle.

2. Angular contact ball bearings: these bearings can simultaneously withstand radial load and axial load, due to the radial load will cause internal axial force, so these bearings are always installed in pairs, and can be preloaded to improve the rigidity of the spindle bearing. Contact angle of 15 °, 25 °, 40 °, 60 ° several, spindle bearings mostly with 15 ° and 25 ° two, 60 ° contact angle of the bearing is mainly used to bear axial load.

3. Tapered hole double row cylindrical roller bearings: these bearings can withstand larger radial load and have higher speed. They cannot bear axial load. Bearing inner ring has 1:12 tapered hole and spindle tapered shaft diameter with, axial movement of the inner ring can adjust the bearing clearance radial preload.

4. Tapered roller bearings: these bearings can simultaneously withstand radial load and axial load, double row tapered roller bearings can withstand two-way axial load, the limit speed is lower than the same size of cylindrical roller bearings.

5.Thrust ball bearings and thrust roller bearings: thrust bearings are mainly used to bear axial load, heavy machine tool spindles usually use thrust roller bearings.

6. Two-way thrust angular contact ball bearings: These bearings are used with double-row cylindrical roller bearings to withstand two-way axial load, and can run smoothly at high speed.

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