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Matters needing attention in bearing inner sleeve processing

Matters needing attention in bearing inner sleeve processing

When the inner sleeve is processed, the principles and requirements of the groove edge chamfering, surface grinding, and fine grinding of the raceway are similar to those of the outer sleeve.

After the inner ring surface is ground, the centerless inner and outer diameter processing is performed. This is to lay the foundation for the rough grinding of the inner groove and branch diameter in the next process. The requirements for inner and outer diameter grinding are similar to the grinding outer diameter.

After grinding the inner and outer diameters, rough grinding of the inner raceway (supporting inner and outer diameter grinding raceways) is carried out. The requirements for rough grinding of the inner raceway are similar to those for the rough grinding of the outer raceway. Afterwards, rough grinding of the inner diameter is carried out. The advantage of this is to make the inner diameter, inner raceway and inner and outer diameter concentric, reducing the vibration and noise of the finished bearing.

After the inner diameter is roughly ground, the inner raceway is finely ground, and its requirements are similar to the fine ground outer raceway. Then, the inner diameter is finely ground and the inner raceway is finely ground (similar to the outer raceway).

If there are bumps, rust layers, abrasive particles, sand, dust and soil on the assembly surface of the bearing and the surface of its mating parts, it will be difficult to install the bearing and cause the assembly position to be incorrect; second, these attachments will form abrasive and easy The working surface of the non-standard bearing is scratched, affecting the assembly quality. Therefore, the shaft journal, the surface of the housing hole of the bearing housing, the end face of the shoulder, and the mating surface of the connecting parts such as bushes, washers, ends, etc. should be carefully inspected before installation. If there is a rust layer, it can be filed with a fine file and polished with a fine emery cloth. At the same time, the attachments on the bearing assembly surface and its connecting parts should be removed.

For bearings with separable inner and outer rings, do not interchange the outer rings with each other to avoid affecting the contact quality. For non-standard bearings, do not arbitrarily take out the rolling elements in the bearing and place them in order to avoid the misalignment of the installation position and affect the accuracy. When installing the bearing, in order to facilitate the inspection of the bearing code, the typeface of the bearing ring should be placed and installed facing outward.


Post time: Jan-19-2021