How to choose quality bearings?

A little background ...

Today the bearing is an integral part of many machines and mechanisms. And what was the history of its origin? When exactly was it invented and what role was it assigned? Let's figure it out together.

According to reliable historical data, the first bearings were made of stone. They belong to the Neolithic era. By the nature of friction, these bearings belong to the type of sliding. They were used to reduce friction in spindles and drilling attachments.

Bearing characteristics

The bearing is an important element of the support assembly. It is necessary to maintain a rotating shaft or axis in space. It perceives and transfers radial or axial loads between assemblies and provides rolling, linear motion and sliding.

According to the nature of friction, this assembly unit is divided into several types:

rolling (ball, roller, radial, linear, thrust);
slip (magnetic, hydrodynamic, hydrostatic, gasdynamic, gasostatic).

Considering the functional significance of this kinematic connection, bearings are also classified according to the number of rows of rolling elements, if possible to extinguish the misalignment of the shaft and sleeve; according to the initial material from which the rolling elements are made.

Bearing Applications

Currently, the bearing is an integral part of various engines, machines and mechanisms. For example, ball bearings are more often used on shafts of small diameter, where there is a small load. Well, for work in high load conditions, it is advisable to choose roller bearings. In textile equipment, needle bearings are most often installed, and when working in extreme conditions, a spherical type bearing is perfect.

This technical device is an essential element in automobiles and motorcycles, trains and airplanes, food and oil and gas equipment, oil and gas installations and lifting equipment. Therefore, the question of choosing a bearing must be approached responsibly and seriously.

The main criteria for choosing a quality bearing

When choosing a bearing, experts recommend taking into account the various physical and technical parameters of the part. Detailed characteristics of all types and their classification are given in the current standards. But all the same, the choice is rather arbitrary, because the same bearings can serve different purposes.