Imported SKF bearing failure forms and design constraints

Imported SKF bearing common failure forms mainly include: 1, fatigue pitting practice has proved that with the proper lubrication and sealing, installing and maintaining normal conditions, because most of the bearing along the ring rolling body roll to produce changes in the interaction of object surface contact stress, after a certain number of cycles, the stress will lead to deep under the surface does not form the micro cracks. The micro cracks were in the lubricating oil cracked and cause pitting. 2, too much plastic deformation in the static load and impact load, the rolling element or roll ring road appear uneven plastic deformation of the pit. This situation occurs at very low speed or oscillating bearing. 3, abrasive wear, adhesive wear imported SKF bearing in unreliable sealing and dusty work under the conditions of operation, easy occurrence of abrasive wear. Usually between roller and ring, especially have a sliding friction between roller and cage, if the lubrication is not good, fever serious when, can make the roller tempering, even produce adhesion wear. The higher the speed, the more serious the wear. Also not normal installation, disassembly and operation will also cause bearing element fracture damage, it should be avoided. Check the need to meet the design constraints of the main is to avoid bearing failure, to ensure bearing can normal work within the prescribed time limit. In general, the bearing under different conditions the main failure modes are different. For medium speed operation of bearing, the main failure form is fatigue pitting, design constraints is to ensure that the fatigue life of bearing has enough, should check calculation according to fatigue life; For high-speed bearing, because the great heat, and often produce excessive wear and burns, design constraints in addition to ensure the bearing has enough fatigue life, still should limit the speed shall not exceed the limit value, namely except life calculation, checking the limit speed; For bearing no rotation or speed is extremely low, its main failure forms of plastic deformation is too large, the design constraint is to prevent to produce large plastic deformation, need to carry on the static strength check calculation. In addition, bearing composite structure design is reasonable, to ensure that sufficient lubrication and reliable seal, it to improve the service life of bearing and guarantee the normal work is very important.