Motor is in commonly used after 2000 hours should be cleaning and refueling. Bearing By AOBOTE http://www.skfbearing-china.com/  cleaning method has the following two kinds: A, hot oil cleaning method due to the use of long, soft dry oil or rust cream hardening KOYO bearing, should dip in 100-200 ℃ hot oil, clamp with forceps KOYO bearing, using the oil on the hair brush clean KOYO bearing. Soft dry oil or rust paste is heated to 100-200 ℃ is melt, it is easy to flush out from a crack in the KOYO bearing. Sometimes as long as KOYO bearing repeatedly shaking in the oil. The oil into crevices from. In cleaning the old motor or import the centripetal spherical bearing of the motor, you should put the ball, pearl frame transverse transfer from the outer ring, internal ring into hot oil, again after a short cylindrical roller bearing when cleaning roller, beads, also should be the inner ring and outer ring off. In the hot oil when cleaning, the oil temperature should not exceed 20 ℃. If use flame directly heating, should pay attention to prevent the oil burning, KOYO bearings to hang in the pan, sink will cause overheating and reduce hardness. Second, a cleaning method put KOYO bearing soak 5-10 minutes of kerosene to squeeze the inner ring with one hand, another hand turn the outer ring, KOYO bearing on dry oil or antirust cream will fall down. Then put KOYO bearing in cleaner kerosene, with soft hair brush to wash, wash oil inside the ball and crack, put them in gasoline cleaning, put out with clean paper. Centripetal spherical ball bearing and short cylindrical roller bearing when cleaning should be ball, pearl, the inner ring and outer ring off to clean.