KOYO bearing cage material effect on the bearing operation

( 1) The general requirements of cage material 1) With low hardness and high wear resistance, although high hardness material abrasion resistance is higher, but if use high hardness material cage, will wear, roller to rotate the performance brings bad influence, even 'phenomenon'. 2) Due to repeated tensile and compressive stress suffered by cage, so demand has high fatigue strength; It is necessary to elasticity and toughness; Resistance to centrifugal force. 3) Maintains a light weight, using low density material, in order to make KOYO bearing friction loss small, ease in and out of the impact load of roller. 4) Plastic processing and machining performance good; There is plenty of rigidity and flexibility. 5) Low friction coefficient between the ring and rolling body. 6) Chemically stable, not easy to rust. ( 2) The additional requirement of cage material 1) Surface can embellish sex, can be attached or storage lubricant; 2) Good thermal conductivity, heat faster; Heat capacity is big, heat resistant; 3) Have certain ability of vibration absorption, not easy to produce resonance with other parts, 4) It is not easy to produce noise. ( 3) The special requirements of cage material 1) In must have corrosion resistance of the situation, because the cage does not need very high hardness, so the austenitic stainless steel can be used, and 0 cr18ni9 steel used at most; 2) Under the high temperature occasion, also use have enough high temperature strength of austenitic stainless steel; 3) When special need improve cage intensity, can use the low carbon steel in carbonitriding surface treatment; 4) In need of self lubricating condition, can use graphite steel cage, or storage of porous materials manufacturing cage; 5) When you are working in a magnetic field, sometimes require materials do not interfere with the external magnetic field, and is not affected by external magnetic field. Bearing temperature, average according to the external temperature of the bearing. But using the oil hole directly measure temperature more accurately KOYO bearing outer ring. The bearing temperature, starting operation gradually increases, usually 1 ~ 2 hours after the temperature stability. If the bearing installation, the temperature will rise sharply, abnormal high temperature. The reason such as lubricant, KOYO bearing clearance is too small, too much bad installation, sealing device too much friction, etc. High-speed rotation, the choice of the ways of bearing structure, the lubrication error and so on is also the reason. KOYO bearing rotating with a stethoscope and check, has the strong metal noise, such as vision, irregular note that exception. Its reason has poor lubrication, shaft or precision bearing, bearing damage, foreign body intrusion, etc. 1, tile surface corrosion: spectrum analysis found that non-ferrous metal element concentration anomaly; Iron spectrum appeared a lot of non-ferrous metal components in sub-micron wear particles; Lubricating oil excess moisture, acid value exceeds bid. 2, a shaft neck surface strain: iron spectrum have iron series cutting grinding grain or black oxide particles, metal surface heat tint. 3, shaft neck surface corrosion: spectrum analysis found that iron concentration is unusual, there are a lot of iron in iron spectrum of submicron particles, water or high acid value oil paint. 4, surface strain: iron spectrum found cutting abrasive, abrasive ingredients for non-ferrous metal. 5, tile back micro wear: spectrum analysis found that iron concentration is unusual, there are a lot of iron in iron spectrum wear submicron particles, lubricating oil moisture and acid value anomalies. Under the condition of fluid lubrication, sliding surface is lubricating oil without direct contact, also can greatly reduce the friction loss and wear of surface oil film also has a certain vibration absorbing ability