Date: 2022-08-11

FV Teach you to Choose Suitable Rolling Bearing Clearance

When it comes to bearing installation, we will inevitably talk about a proper term: clearance. What is clearance? What is the important role of clearance on rolling bearings? How do we choose the appropriate clearance? Today FV bearings teach you some basic knowledge of clearance.

 

The so-called clearance is: the radial (axial) clearance of the bearing is the diameter of one ferrule relative to the other ferrule moving from the radial (axial) limit position to the opposite limit position when the bearing has no external load. Axial (axial) distance. In reality, due to the shape error of the ferrule and the inconsistency of the rolling elements, it should use the average value of the radial (axial) displacement in different directions of the ferrule and different relative positions of the ferrule and the rolling element.

 

The role of clearance: Clearance is an important technical parameter of the bearing. Its size and suitability directly affect the bearing installation and the load distribution, vibration, noise, friction, temperature rise, service life and bearing performance of the bearing. Technical performance such as running accuracy.

 

If the clearance is too large, the bearing area inside the bearing will be reduced, the stress of the contact surface will increase, and the service life will be shortened. Excessive clearance will also reduce the running accuracy of the bearing and increase vibration and noise. If the clearance is too small, there may be negative clearance (interference) in actual operation, which will lead to increased friction and heat generation and increased temperature rise, which in turn will make the effective clearance smaller or the interference larger. Such a vicious cycle will lead to bearing holding die. Whether the clearance is too large or too small, it is not good for the use of the bearing, so we have to choose the appropriate clearance.

 

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