Bearing wear is generally due to foreign objects in […]
Bearing wear is generally due to foreign objects into the bearing caused by the internal. Foreign matter into the bearing will cause bearing grinding damage, abrasions, groove marks, circle lines and debris pollution.
1, grinding damage: When the small foreign body into the bearing after the internal, may cause excessive wear and tear bearing wear. Such as sand particles, metal particles produced during grinding and machining, and metal particles or carbides brought by gears wear or grind the rollers and raceways. This wear can cause axial clearance or internal clearance to expand, thereby reducing the fatigue life of the bearing, resulting in bearing eccentricity.
2, pitting and scratches: hard particles rolling in the bearing, can cause the roller and raceway pitting and abrasions. If the bearing is clean and the remaining metal fragments or large particles of dust, will lead to premature fatigue damage.
3, slot marks: groove marks by the debris or metal particles caused by the extreme serious wear and tear. These contaminants wedge the soft cage material, causing the rolling members to appear in the groove, which will affect the rolling contact geometry and reduce the bearing life.
4, debris pollution: external debris pollution is usually caused by dust, sand and environmental particles, and the internal debris pollution is generally by the gears, splines, seals, clutches, brakes, joints and bearings and other improper cleaning Or parts of the damage or peeling caused. Hard particles with the lubrication process in the bearing walk, eventually leading to the bearing surface scratches (crush). Indentation to form protrusions, causing the concentration of surface stress, resulting in early damage bearing surface, reducing bearing life.