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2024

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Bearing selection methods and steps

The correct selection of rolling bearings plays a very important role in whether the host can obtain good working performance and extend its service life; it also plays a very important role in whether the company can shorten maintenance time, reduce maintenance costs, and improve the operating rate of the machine. Therefore, whether it is a design and manufacturing unit or a maintenance and use unit, it must attach great importance to the selection of rolling bearings.

Generally speaking, the steps for selecting a bearing may be summarized as:

① Select the basic type, tolerance level and clearance of the bearing according to the bearing working conditions (including load direction and load type, rotation speed, lubrication method, coaxiality requirements, positioning or non-positioning, installation and maintenance environment, ambient temperature, etc.);

② According to the working conditions, stress conditions and life requirements of the bearing, determine the bearing model through calculation, or select the bearing model according to the usage requirements, and then check the life span;

③ Check the rated load and limit speed of the selected bearing.

The main considerations in selecting bearings are the limit speed, required life and load capacity. Other factors help determine the final solution for bearing type, structure, size, tolerance level and clearance requirements.

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