| PROBLEM |
CAUSE |
REMEDY |
| Noise |
High pitched metallic noise |
Poor lubrication |
Improve lubrication |
| Clearance too small |
Correct clearance |
| Poor fitting |
Investigate mounting method and seating |
| Excessive load |
Examine shaft and housing tolerances for closing effect |
| Low pitched metallic noise |
Brinelled raceway surface |
Avoid shock loads |
| Regular noise |
Rust and damage |
Check and replace seals and relubricate |
| Flaking of raceway surface |
Improve lubrication and check fitting,clearance and fixing method |
| Irregular noise |
Ingress of foreign matter |
Check and replace seals and relubricate |
| Excessive clearance |
Correct clearance |
| Damege and flaking of rolling element |
Reduce loads and/or clearance |
| Variable noise |
Variable clearance due to temperature changes |
Check fits taking housing material and temperature into consideration |
| Damage to raceways |
Improve lubrication and check fitting,clearance and fixing method |
| Heavy vibration |
Flaking of raceway and rolling element |
Improve lubrication and check fitting,clearance and fixing method |
| Ingress of foreign matter |
Check and replace seals and relubricate |
| Excessive clearance |
Correct clearance |
| Poor location |
Ensure abutment face and fitting diameter are perpendicular |
| Excessive heat generation |
Clearance too small |
Correct clearance |
| Poor location |
Ensure abutment face and fitting diameter are perpendicular |
| Excessive load |
Examine shaft and housing tolerances for closing effect |
| Poor lubrication |
Improve lubrication |
| Creep |
Maintain recommended shaft and housing fits |
| Lubrication failure |
Too much grease |
Use correct lubricant quantity |
| Ingress of foreign matter |
Check and replace seals and relubricate |
