The difference between the NMB miniature bearings and plain bearing and main points of cleaning

The difference between the NMB miniature bearing and plain bearing and main points of cleaning hot oil cleaning method is suitable for the NMB miniature bearing daily, soft dry oil or rust cream hardening bearing, should dip in 100 - 200 ℃ in hot oil, clamp bearing with forceps, brush with wool to clean oil bearing. Soft dry oil or rust creams are heated to 100 - 200 ℃, melting, easily from NMB in the aperture of miniature bearing washed out. Sometimes as long as bearing repeatedly shaking inside the oil, the oil into crevices from. In cleaning the old motor or imported motor NMB miniature bearing, you should put the ball, pearl horizontal transfer from the outer ring, internal ring and then into hot oil, NMB miniature 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 safety to prevent the oil burning, NMB miniature bearing to hanging in the pan, sink, will cause overheating and reduce hardness. The difference between the NMB miniature bearing and plain bearing: 1, precision NMB demand higher than the ordinary bearing, miniature bearing size deviation of high precision grade NMB miniature bearing product size deviation ( Inside diameter, outside diameter, clearance, etc. ) The value of the product requirements are lower level than accuracy is smaller; 2, precision NMB miniature bearing rotation accuracy value ( Radial runout, outer diameter to the beat, end face a race to beat, etc. ) Lower than the accuracy grade of plain bearing product value strict; 3, precision NMB miniature bearing surface shape or quality ( Race or surface roughness of the channel, furrowed deviation, circular deviation, etc. ) More strict than common grade of low precision bearings; 4, high precision grade NMB miniature bearing production materials used in bearing material performance is better than the average accuracy level.