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Five Steps to Correctly Mounting Bearings
Use special tools for bearing installation and disassembly
Advanced installation tools can avoid bearing damage caused by improper tools and operations during installation. For example, when installing the bearing, the staff used the copper rod knocking method, which is easy to cause uneven axial force on the bearing, causing deformation of the cage, damage to the rolling elements, and large clearance. The copper powder flies into the bearing cage, which is easy to cause bearing failure.
Check the bearing before installationFor old bearings, check the ball (column) surface for burrs, scratches and cracks. Whether the radial clearance and axial clearance of the old bearing are qualified, generally only the radial clearance is measured. For new bearings, first check that the bearing type is correct. Refer to Table 1 for the radial clearance standards of rolling bearings. For example: Model 6318 deep groove ball bearing, the inner diameter of the bearing is 90mm, the radial clearance range is 0.016 ~ 0.046mm, and the maximum wear amount of the bearing can also be found to be 0.25mm.
Check the matching size of the bearing and the rotor shaftWhen assembling the motor, it is also necessary to carefully check the matching size of the bearing and the rotor shaft when the bearing is installed (Table 2). Fitting dimensions of end cap holes.
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