Bearing installation is extremely important

Whether the bearing is installed well or not will affect the accuracy, life and performance of the bearing. Therefore, the installation of bearings is extremely important.

Since the bearings are rustproofed and packaged, do not open the package until immediately before installation.

In addition, the anti-rust oil coated on the bearing has good lubricating performance and can be used directly without cleaning. However, for instrument bearings or bearings used for high-speed rotation, the anti-rust oil should be washed off with cleaning oil. At this time, the bearings are prone to rust and cannot be placed for a long time.

Clean the bearing and confirm that there are no scratches or burrs left by machining on the mounting surface.

Secondly, check whether the size, shape and processing quality of the shaft are consistent with the drawings.

Before installing the bearings, apply mechanical oil to each mating surface of the tested bearings.

Bearing installation methods vary depending on the bearing type and fit conditions.

Since the shaft generally rotates, the inner ring and the outer ring can adopt interference fit and clearance fit respectively, and when the outer ring rotates, the outer ring should adopt interference fit.

The bearing installation methods when using interference fit can be mainly divided into the following categories:

①Press-in installation: Press-in installation generally uses a press, and bolts and nuts can also be used to bring them in evenly.

② Shrink sleeve installation: The heat sleeve method of heating the bearing to expand it and then installing it on the shaft can prevent the bearing from being subjected to unnecessary external force and complete the installation work in a short time.

Bearings need to be disassembled for periodic inspection or parts replacement. Usually the shaft and bearing housing are almost always used, and the bearings are often also used. Therefore, the structural design should take into account that when disassembling the bearing, the bearing, shaft, bearing box and other parts will not be damaged, and appropriate disassembly tools must be prepared.

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