Automotive bearings30 reasons for failure:The cause of automobile bearing failure?
There are impurities in the oil.
Insufficient lubrication
(The oil level is too low, improper storage, oil leakage or oil leakage in the seal);
Bearing clearance is too small or too large
(Problems of production equipment);
The bearing is corroded by water, acid or paint.
Bearing seat hole flattened
(The roundness of the seat hole is not good, or the seat hole is not straight);
The bearing seat base is not flat
(Causing deformation of the seat hole and even cracks in the bearing seat);
Impurities in the bearing seat hole
(Remaining debris, dust, etc.);
Seal ring eccentric
(Friction occurs in adjacent parts);
Bearing with additional load
(The bearing is tightened axially or there are two fixed-end bearings on one shaft);
Loose fit between bearing and shaft
(The shaft diameter is too small or the fastening sleeve is not tightened);
(The tightening sleeve is too tight);
Bearing noise
(Caused by the end of the drum or the steel ball slipping);
Shaft thermal elongation is too large
(Bearings bear additional static and uncertain axial loads);
The shoulders are too big.
(Friction occurs when encountering bearing seals);
The shoulder of the seat hole is too large
(TwistCrankshaftBearing seal);
(Friction with shaft);
The lock washer has a curved tooth profile
(Friction occurs when encountering bearings);
The position of the slinger is inappropriate.
(Contact the flange cover and cause friction);
Pressure pits on steel balls or rollers
(Due to bearing hammering during installation);
Bearing noise
(Interference from external vibration sources);
(usespray gunHeating to disassemble the bearing);
(Causes bearing temperature to be too high or noise);
Small seat hole diameter
(Causing the bearing temperature to be too high);
The bore of the bearing seat is too large, and the actual fit is too loose
(Bearing temperature is too high-outer ring slips);
Bearing housing hole enlargement
(The non-ferrous metal bearing seat hole is elongated or enlarged due to thermal expansion);
Cage fracture;
Corrosion of bearing raceway;
Wear of steel balls and raceways
Failed loop