Cause analysis of leakage at the outer edge of oil seal

Oil seal has no abnormality

1. The inner surface of the cavity hole is damaged;

2. The rough surface of the cavity hole is too large;

3. The cavity has pores, cracking, etc.

The oil seal is tilted

1. The inner diameter of the cavity hole is small;

2. Poor chamfering of cavity hole;

3. The installation tool does not match;

4. Improper installation operation.

Oil seal deformation

1. The installation tool does not match;

2. Improper installation operation;

3. Transportation and transshipment deformation.

The outer circumference of the oil seal is squeezed out

1. Small inner diameter of cavity hole;

2. Poor chamfering of cavity hole;

3. The installation tool does not match;

4. Improper installation operation.