9. Ball bearing faults and their solutions - loosening and chamfering issues

The bearing locking nut on the shaft or tightening sleeve is loose

Factors to consider during installation:

～Loose locking nuts can cause loose bearings.

～This will cause the inner ring to creep (rotate) on the shaft neck.

～This situation will cause the bearing to produce greater noise, more heat, and also result in poor bearing positioning.

Measures:

Tighten the nut to ensure that the inner ring is in the appropriate position (with appropriate clearance inside the bearing).

After installation, confirm that the locking nut has been tightened (if using a locking washer tongue to clamp).

The bearings and mating components are not clamped tightly

Factors to consider during installation:

►If the bearings and adjacent components are not properly clamped, the required internal clearance or preload may not be achieved.

►This situation will lead to an increase in noise and have a negative impact on the performance of the bearing.

Example:
►A set of paired angular contact ball bearings is not properly clamped.

►This will result in an increase in axial clearance of the paired bearings, leading to sliding damage of the ball rolling elements (tailing phenomenon), increased noise, and lubrication problems.

►Incorrect clamping of bearings can also affect shaft positioning.

Measures:

Ensure that the locking device accurately positions the two bearings against the shaft shoulder or spacer.

The chamfer radius of the bearing edge is too large

Factors to consider during installation:
►If the chamfer of adjacent components is too large, the bearing will not be able to receive reasonable support.

►This situation can cause deformation of the bearing ring.

►The bearing cannot obtain appropriate internal clearance (preload).

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Measures:

Machine chamfers to obtain reasonable support.

If you would like to learn more details and have any needs, please feel free to contact me at any time.

Email: jackengineer@blhbearing.com
WhatsApp：+8613760352799
www.blhbearing.com