Characteristics and application analysis of oil-bearing and oil-free bearing

Nov 18, 2022

Characteristics and application analysis of oil-bearing and oil-free bearing


Although both belong to bearing products, there are still great differences between bearings and oil-free bearings in basic performance, application, etc. In order to make it easier for everyone to distinguish and choose, the following is a comparison between the two types of bearings. Interested friends can pay attention to it.

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All friends of oil bearing know that it has the advantages of low noise and self-lubricating, so it has been widely used and achieved good response. In addition, with the increasing demand of people, the application scope of oil bearing is also expanding. The performance of oil bearing is largely determined by its material, so be careful when selecting materials.


The oil-free bearing is made of steel plate as the base, sintered spherical bronze powder as the middle layer, and the mixture of PTFE and lead is rolled on the surface layer. The particularity of materials makes oil-free bearings have the characteristics of small friction coefficient, wear resistance, corrosion resistance, self-lubricating, long service life, etc. In practical application, oil-free bearings can not only reduce cost and noise, but also play a certain role in anti sticking and anti-skid. Therefore, their application is basically the sliding parts of various machines.