|
|
Item |
Phenomenon |
Reason |
Measure |
|
1 |
Be stripped | Running surface is stripped and rugged |
Overload; Improper useage; Installation error; Low precision of shaft or bearing box; Smaller interference and uncertain matter invades leads to rust; Too high temperature results in lower hardness |
Restudy the using conditions; Reselect bearing; Reconsider the interference;Check the process of precision of shaft and bearing; Research bearing design; Check installation method; Check lubrication and lubricating way |
|
2 |
Fire burn | Heating bearing discolored and then burn and can not rotate |
The interference is smaller; Insufficient lubrication and unsuitable lubricant; Over-load; Roller deflection |
Set proper interference; Check lubricant kind and guarantee the injection volume;Check using condition;Avoid location error; Check bearing design; Imporve bearing assembling way |
|
3 |
Crack notch | Partial notch and crack | Impact load is too large; Interference is too much; There is too big stripping; Lower installation accurancy; Friction crack; Wrong usage | Check usage conditions;Set proper interference and check materials; Improve installation and using way; Avoid friction crack;Check bearing design |
|
4 |
Cage damage | Rivet loose or broken; Cage broken | Torgue overload; High speed rorate or revolution speed varies frequently;Lower lubrication; Uncertainty invades; Big vibration; Wrong installation; Abnormal rise temperature | Check using conditions; Check lubrication conditions; Restudy cage selection; Pay attention to bearing usage; Research the rigidity of shaft and bearing box |
|
5 |
Damaged caused by friction and seizing-up | The surface is rough with tiny deposited; There is friction damaged between ring edge and roller end face. | Lower lubrication; Uncertainty invades; Roller deviation caused by tilting of the bearing; Off oil from edge caused by excessive axial load; Large surface roughness; Roller sliding | Restudy the lubricant and lubricating way; Check using conditions; Set proper pre-loading;Enhance sealing performance |
|
6 |
Rust corrosion | Partial or all rust on the surface; Roller tooth pitch rust | Incorrect storage condition; Wrong packing; Anti-rust inadequate; Water and acid solution invade; Take bearings directly by hands | Avoid rust during storage; Enhance sealing performace; Check lubricating oil regularly; Pay attention to the bearing usage |
|
7 |
Corrosion | Mating surface generates red rust wearing powder | Insufficient interference; Smaller shaking angle of bearing; Insufficient lubrication; Instable load; Shaking while transport | Check interference and lubricant coating conditions; Separate out ring and inner ring while transport; Can not increase pre-load while separation; Reselect lubricant and bearing |
|
8 |
Abrasion | Surface abrasion leads to size changeable,always has friction damage and polishing scratch | Uncertain matter invade lubricant; Lower lubrication; Roller tilting | Check lubricant and lubricating way; Enhance sealing performance; Avoid position error |
|
9 |
Electro-crrosion | Rolling surface has fire button shaping steel pit after further development will become plate rolling surface shape | Rolling surface electrified | Make current valve; Take insulation measures; Avoid current going into inside of bearing |
|
10 |
Indentation scratches | Solid uncertaiin matter invade or pound lead to the steel pit and installation scratches of the surface | Solid uncertain matter invade; Stripping plate seizing-up; Improper installation results in impact and drop; Installing while tilting | Improve installation and usage method; Avoid uncertan matter invading; Check other aspects if scratches caused by sheet metal |
|
11 |
Creepage | Internal or external diameter sliding result in mirror plate or discolor | Interference insufficiente of distribution containing; Sleeve fastening is not enough; Abnormal temperature rising; Overload | Restudy interference; Research using conditions; Check shaft and bearing box accurancy |
Post time: Sep-25-2018