| Noise |
High-pitched metallic noise |
Poor lubrication |
Use the correct amount of appropriate lubricant |
| Insufficient clearance |
Ensure proper clearance |
| Poor mounting |
Check the accuracy of the shaft and housing, as well as the mounting method |
| Excessive load |
Check the fitting and preload |
| Low-pitched metallic noise |
Indentation on raceway surface |
Avoid the impact load when dropped or during mounting |
| Regular noise |
Rust and/or damage |
Check the sealing device, and use clean lubricant |
| Flaking on raceway surface |
Use appropriate fitting, clearance, lubrication and mounting method |
| Irregular noise |
Intrusion of foreign matter |
Check the sealing device, and use clean lubricant |
| Excessive clearance |
Ensure proper clearance |
| Ball damage and ball flaking |
Ensure proper clearance and load |
| Noise that changes over time |
Change in clearance due to rising temperature |
Check the shaft and housing materials, and ensure proper clearance |
| Ongoing abnormality on the raceway |
Use appropriate fitting, clearance, lubrication and mounting method |
| Heavy vibration |
Raceway and ball flaking |
Use appropriate fitting, clearance, lubrication and mounting method |
| Intrusion of foreign matter |
Check the sealing device, and use clean lubricant |
| Excessive clearance |
Ensure proper clearance |
| Poor mounting |
Adjust the perpendicularity of the shaft and housing shoulders |
| Abnormal temperature rise |
Insufficient clearance |
Ensure proper clearance |
| Poor mounting |
Check the accuracy of the shaft and housing, as well as the mounting method |
| Excessive load |
Check the clearance, fitting, and preload |
| Poor lubrication |
Use the correct amount of appropriate lubricant |
| Creep |
Check the fitting, and adjust the shaft and housing |
| Leakage and discoloration of lubricant |
Too much grease |
Use the correct amount of appropriate lubricant |
| Intrusion of foreign matter |
Check the sealing device, wash the parts around the bearing, and replace the bearing |
