Bearing Rust Prevention Management Procedure
Bearing Rust Prevention Management Procedure
2021年12月20日
This Paper Briefly Introduces The Characteristics Of The New Bearing Grinding Process
This Paper Briefly Introduces The Characteristics Of The New Bearing Grinding Process
2021年12月20日

Device And Method For Common Errors Of Bearing

Common Errors Of Bearing

Improper operation of the bearing in the device will often lead to early destruction of the bearing or take effect in the middle and late application, which greatly improves the bearing cost. These rare devices are wrong! So, what is the right device? Common Errors Of Bearing Come and have a look!

The inner ring shaft and the inner bore of the bearing are too loose together (commonly known as “inner ring”) because the joint choice between the shaft and Common Errors Of Bearing the inner bore is too loose, resulting in sliding between the shaft and the outside of the inner bore. Sliding friction will cause fever and destroy the bearing due to fever.

There are traces of sliding between the shaft and the surface of the inner hole

1. The inner ring end face Common Errors Of Bearing and the shaft shoulder generate cracks due to friction and heating

When “walking the inner ring”, the sliding friction between the inner ring and the shaft will produce high temperature. Because the contact surface between Common Errors Of Bearing the end face of the inner ring and the shaft shoulder is very small, the temperature will be higher. Make the end face of the inner ring produce thermal cracks. The continuous extension of the thermal cracks will break the bearing inner ring in use.

Device And Method For Common Errors Of Bearing
2. Adhesion occurs after heating between the shaft and the inner hole surface

Due to the “walking inner ring”, there is sliding friction Common Errors Of Bearing between the inner hole and the shaft surface, and the high temperature causes the surface metal to melt and produce adhesion.

The hole diameter of the outer race housing fits Common Errors Of Bearing too loosely with the outer diameter of the bearing (commonly known as “outer race”)

Due to the loose fit determined by the shell hole diameter and the bearing outer diameter, Common Errors Of Bearing there is sliding between their surfaces. Sliding friction will cause heating and damage the bearing.

There are traces of sliding between the housing bore and the outer diameter surface of the bearing

1. The hammer strikes the bearing directly

For the bearing with common interference of the Common Errors Of Bearing inner ring (or outer ring) of the device, it is prohibited to indirectly knock the end face of the inner ring (or outer ring) of the bearing with a hammer, so that the retaining edge can be easily broken. The sleeve should be placed on the end face of the inner ring (or outer ring) and the sleeve should be knocked with a hammer to install the device.

2. Heating temperature too high

Some users use acetylene spray gun to heat the bearing inner hole. When the heating temperature exceeds 727 ℃  Common Errors Of Bearing (phase transformation temperature of bearing steel), the metallographic structure inside the bearing steel will change. After the bearing is cooled, the bearing inner hole cannot be restored to its original size, which is usually larger than that before heating.

The surface of the Common Errors Of Bearing bearing heated by the acetylene spray gun turns black

How to assemble the bearing is accurate? Precautions during assembly

1. For the bearing ring with clearance fit, it is Common Errors Of Bearing recommended to apply a thin layer of anti creep agent on the mating surface to prevent friction degradation between the mating surfaces.

2. The force exerted on the bearing during assembly must not be reported from one bearing ring to another by moving the change body, otherwise the raceway may be damaged. However, under no circumstances can the bearing ring, cage, migration change body or seal be directly knocked.

3. Install eccentric sleeve. First put the eccentric sleeve on the eccentric step of the bearing inner sleeve and tighten it by hand along the rotation direction of the shaft, then insert or counter the small iron rod into the counterbore on the eccentric sleeve, knock the small iron rod along the rotation direction of the shaft with a hammer to make the eccentric sleeve fit firmly, and then lock the Allen screw on the eccentric sleeve.

4. Do not tighten the bolts of the bearing seat firmly first, so that the bearing sleeve can be moved and changed in the bearing seat. Then fasten the bearing seat bolts. Abnormally install the bearing and seat at the other end of the same shaft, move and change the shaft for several turns, and let the bearing itself automatically align.

5. Apply lubricating oil on the mating surface of bearing seat and bearing, and install the bearing into the bearing seat. Then put the assembled bearing and bearing seat on the shaft and push it to the required position to complete the assembly.