In bearing work, especially high speed rotating, maintains a to under a lot of the centrifugal force, impact and vibration, the bigger sliding friction, and have a lot of heat. Therefore, requirements material thermal conductivity, good abrasion resistance, small friction coefficient, smaller proportion, a certain strength, and similar roller coefficient of expansion, and the processing technology of the good performance. Special use bearing maintains a have special requirements, such as high temperature resistant, etc. Now commonly used maintains a material with a high quality low carbon steel (08,10,08 F, 10 F), brass, steel, spring steel, alloy steel, phenolic tape pipe, plastic, etc.
 
Maintains a heat treatment is mainly used to stamping keep frame, more for heat treatment between production processes, make plastic material recovery, because maintains a processing can produce the serious work hardening and stress. This kind of heat treatment are: high quality carbon steel plate cold stamping maintains a recrystallization annealing (heated to 600 ℃, insulation around 2 ~ 3 h, the stove cold); Brass with cold stamping maintains a recrystallization annealing (heated to 600 ~ 650 ℃, heat preservation 30 min, air cold or water); Stainless steel belt cold stamping softening, etc.




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