Industry News

Four cases of bearing damage, which is the biggest evil?

2019-3-17

Various problems often occur in the use of bearings. Common problems of bearing damage are as follows: peeling burns; crack defects; cage damage; scratches; rust corrosion; abrasion; This article shares 10 common forms of bearing damage and solutions.

Stripping

Ten cases of bearing damage, which is the biggest evil?

  Phenomenon: The running surface is peeled off, and after peeling, it is obviously convex and concave.

the reason:

Improper use of load;

Poor installation

Poor precision of the shaft or bearing housing;

The play is too small;

Foreign matter intrusion;

Rusty

The hardness caused by abnormal high temperature drops.

  Measures:

Re-examine the conditions of use;

Reselect the bearing;

Rethink the play;

Check the machining accuracy of the shaft and bearing housing;

Study the design around the bearing;

Check the method of installation;

Check lubricant and lubrication methods.

  2. Burns

Ten cases of bearing damage, which is the biggest evil?

  Phenomenon: The bearing is heated and discolored, and the burn cannot be rotated.

the reason: The clearance is too small (including the deformation of the deformation part is too small);

Insufficient lubrication or improper lubricant;

Excessive load (preload is too large);

The roller is skewed.

  Measures:

Set the appropriate clearance (increase the clearance);

Check the type of lubricant to ensure the amount injected;

Check the conditions of use;

Prevent positioning errors;

Check the design around the bearing (including bearing heat);

Improve bearing assembly methods.

  3. Crack defects

Ten cases of bearing damage, which is the biggest evil?

  Phenomenon: Partial notches and cracks.

the reason:

The impact load is too large;

The amount of interference is too large;

Have a large peeling;

Friction crack

Poor precision on the mounting side (the corner circle is too large);

Poor use (with a copper hammer, snap into a large foreign object).

  Measures:

Check the conditions of use;

Set appropriate interference and check materials;

Improve installation and use methods;

Prevent friction cracks (check lubricant);

Check the design around the bearing.

  4. Damage to the cage

Ten cases of bearing damage, which is the biggest evil?

  Phenomenon: The rivet is loose or broken; the cage is broken.

the reason:

Torque load is too large;

High-speed rotation or frequent changes in speed;

Poor lubrication;

Engaged in foreign objects;

Large vibration

Poor installation (installation in a tilted state);

Abnormal temperature rise (resin cage).

  Measures:

Check the conditions of use;

Check the lubrication conditions;

Re-examine the choice of cages;

Pay attention to the use of bearings;

Study the rigidity of the shaft and bearing housing.