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Types Of Air Compressor Main Shaft Bearings And How To Choose Them?
Dec 10, 2018

The operation of the air compressor is inseparable from the role of the bearing. Many consumers are not sure which type of bearing is used in their machine. What are the types of bearings commonly used in air compressors and how to choose them?

First, single row angular contact ball bearings

Mainly used as thrust bearings, single or series installation (in series arrangement, they can withstand high thrust loads), suitable for simultaneous radial loads and high axial loads in one direction, for use in transport The ammonia medium pump will also use the FP cage (pump). The bearing contact angle with the "B" suffix is 40°. Such bearings can withstand high axial loads (pumps) or can be sealed. Bearing.

Second, four point contact ball bearings

It is mainly used as a thrust bearing in a compressor. It is not used to bear radial loads, bears large axial loads in both directions and can bear small radial loads. Since the inner ring of the four-point contact ball bearing is a split design, this design allows it to accommodate more rolling elements, thereby increasing the radial load carrying capacity of the bearing.

Because this type of bearing is a split inner ring design: machined cages make them more suitable for high-speed transport situations. Due to the small axial clearance, the bearings have precise radial guidance, compact bearing design, No separate positioning bearings are required.

Third, deep groove ball bearings

Mainly used for floating end bearings, rarely used as fixed end bearings for high speed operation and also with seal design.

Grease-lubricated deep groove ball bearings are suitable for applications with high n x dm values, depending on the application, long-life lubrication is also possible, ie no relubrication is required.

The above are the common bearing types and selection analysis of the air compressor main shaft. Each different bearing has its own different characteristics. The specific choice should be selected according to the performance of its own equipment.


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