Analysis of Common Faults of Rolling Bearings
- 2021/1/30 14:38:16
There are two kinds of common faults of rolling bearings: one is abnormal noise in the operation of the bearing;Second, the temperature of the bearing installation part is too high.
A certain noise is allowed when the rolling bearing is in normal operation.This sound is characterized by smooth operation, brisk, no stagnation phenomenon, the sound of harmony and no noise, can hear uniform and continuous "hua hua" sound, or lower "bang" sound, noise intensity is not big.
1) The bearing makes a uniform and continuous "hissing" sound.This sound is generated by the rolling body rotating in the inner and outer rings, including irregular metal vibration sound independent of the speed.Generally, the amount of fat in the bearing is insufficient, which should be supplemented.
2) The bearing produces a uniform periodic "ho lo" sound in a continuous "whoop" sound.This sound is caused by scars, grooves and rust spots on the rolling body and the inner and outer ring raceway. The bearing should be replaced.
3) The bearing makes a discontinuous "peeling" sound, which is caused by the breakdown of the cage or inner and outer rings.The bearing shall be replaced.
4) Unregular and uneven "scratching" sound from bearings.The sound is caused by impurities such as iron filings and sand particles falling into the bearing.The bearing shall be cleaned and the grease replaced.
5) The bearing makes a continuous and irregular "rustling" sound.This sound is generally related to the looseness of the bearing inner ring with the shaft or the looseness of the outer ring with the bearing hole.
6) bearings emit harsh chirping.This sound is caused by the dry friction caused by insufficient lubrication or lack of oil of the bearing, or the local contact of the rolling body is too tight, such as the raceway deflection of the inner and outer ring of the bearing and the outer ring with too tight, etc.The bearing shall be replaced.