Sl bearing: the symptoms of fan bearing was broken

Deep groove ball bearings to install use, because as much as the axis of rotation, so the inner ring and outer ring can respectively USES the interference fit and clearance fit, the outer ring rotates, the outer ring USES the interference fit. （ Chart that is good, it is recommended that you collect, for a rainy day! ） Found in the inspection process of converter drive side bearing a badly worn with bearing on both sides of the seal failure, thus resulting in bearing abnormal sound equipment in operation process, the rotation is beating equipment safety hidden trouble. Imported bearing with higher rated load, low noise, greatly reduce warranty costs, increase the machine running time, etc; When in identifying such imports bearing true and false, but through touch to play on the bearing steel is more quick and more accurate to identify, the seal by hand touch, without a touch, but the use of nails touch can feel the existence of the steel seal on the seal. Two kind of shape tolerance is: single radial plane, bearing (inside diameter ds） And the outside diameter ( Ds） The amount of change, Vdp, Vdp) ； The bearing inner ring ( dmp） And the outside diameter ( Dmp） The amount of change, Vdp, Vdp) 。 Mm steel ball diameter, for example, pulp and paper industry is probably half due to bad lubrication bearing damage or contamination is not due to material fatigue. When the original organization regularly in the steel, the carbon content of quenched martensite ( The austenite after quenching heating carbon content) , residual austenite and the body not dissolve carbide mainly depends on the amount of quenching heating temperature and holding time, as the quenching heating temperature ( The time) The decrease in the number of, not soluble in steel carbide ( Quenching martensite carbon content) And increased number of retained austenite, first with the quenching temperature and increase the hardness, peak and decreased and then increased with the temperature. # # # on both sides of the bearing clearance of the bearing is a bearing installed on the root core shaft for group, the damage roll under # frame, bearing damage to both sides of the bearing in the group. All the grease additives containing additives, linear bearing tolerance grade? Linear bearing tolerance grade, that is, precision grade, divided into X, grade, tolerance level is from low to high. Special remind everybody is, cannot the one-sided emphasis on power, only need to match the power of CPU, if the power is too big, not much enhanced cooling effect, not only may enhance the computer instead of the workload, shorten the life of the CPU and fan. Bearing the pseudo brinell indentation damage status: during the micro vibration rolling element and raceway contact part of the wheel wear due to vibration and shaking, tired like brinell indentation impressions. Mm, then we need to check whether the transmission belt is a fracture or machine hung up the neutral; If doubt is the phase of supply spindle power lack of phase or reverse phase. Disconnect the power of the fan later, you gently touch the blades turn a little stiff, found that this shows that the electric fan oil didn't, and if the fan turned up very easily, said fan Ming good lubrication.