|
Operation Status
|
Causes
|
Countermeasures
|
| Noise |
Loud Metallic Sound |
Abnormal load |
●Correct the fit
●Check the clearance
●Adjust the position of housing shoulder, etc.
●Adjust the preload
|
| Improper mounting |
●Improve machining accuracy of shaft and housing
●Improve the accuracy when mounting bearings
|
| Insufficient or improper lubricant |
●Replenish lubricant
●Replace with proper lubricant
|
| Contact of rotating parts |
●Correct contact where rubbing occurs |
| Loud Regular Sound |
Flaws and scratches on raceway |
●Replace bearing |
| Flaking on raceway |
●Replace bearing |
| Irregular Sound |
Excessive clearance |
●Replace bearing with appropriate clearance
●Readjust the clearance
|
| Penetration of foreign particles |
●Clean or replace bearing
●Clean related parts
●Improve seal or shield
●Replace lubricant with clean one
|
| Flaws or flaking on balls |
●Replace bearing |
| Abnormal Temperature Rise |
Excessive amount of lubricant |
●Reduce the amount of lubricant |
| Insufficient or improper lubricant |
●Replenish lubricant
●Replace with proper lubricant
|
| Abnormal load |
●Correct the fit
●Check the clearance
●Adjust the position of housing shoulder, etc.
●Adjust the preload
|
| Improper mounting |
●Improve machining accuracy of shaft and housing
●Improve accuracy when mounting bearings
|
Creep on fitted surface Excessive seal friction
|
●Replace bearing
●Review the fit
●Improve the seal
|
| Excessive Vibration |
Indentation or flaking on raceway |
●Replace bearing |
| Improper mounting |
●Correct perpendicularity of the shoulder of shaft or housing and squareness of side face of spacer
●Improve accuracy when mounting bearings |
| Penetration of foreign |
●Clean or replace bearing
●Clean related parts
●Improve seal or shield
●Replace lubricant with clean one
|
