Classification of bearing clearance adjustment
Bearing refers to the relative axial position of the bearing raceway can be moved to obtain the required clearance. There are conical bearings, angular contact ball bearings and some thrust bearings.
Classification of bearing clearance adjustment
For the clearance of non adjustable bearings, the industry has corresponding standard values (CN, C3, C4, etc.), and specific clearance range can also be customized. When the dimensions of the shaft and bearing seat are known, the matching amount of the corresponding inner and outer rings is determined, and the clearance after installation cannot be changed. Since the matching amount is a range in the design stage, there is also a range for the final clearance, which is not applicable in applications requiring clearance accuracy.
The bearing solves this problem well. By changing the relative axial position of the raceway, we can get a certain clearance value. As shown in the figure below, when moving the position of the inner ring, we can roughly get positive and negative clearances.
Factors affecting bearing clearance
The choice of better working clearance is determined by the application conditions (load, speed, design parameters) and the expected working state (relatively long service life, best stiffness, low heat generation, convenient maintenance, etc.). However, in bearing most applications, we cannot directly adjust the working clearance, which requires us to calculate the corresponding post installation clearance value according to the analysis and experience of the application.
