Remove the four basic problems of koyo bearing

The removal of bearing and install also carefully. Note not koyo bearing and the damaged parts, especially interference fit the bearing down, and the operation is difficult. So, in the design stage to consider in advance to facilitate disassembly, designed and manufactured according to need remove the tools is also very important. When disassembling, according to the drawings the disassembly method, sequence, investigation of bearing with conditions, to ensure foolproof disassembly operations. Remove the interference fit of the outer ring, whether in setting several outer shell on the circumference of a circle of extrusion screw with screws, one side equal to tighten the screw, remove. The screw hole cover usual blind plug, the separation of tapered roller bearing type bearing, shoulders set several incisions in the shell, using block, remove by press, or tap the disassembly. Remove the inner ring, can use simple mechanical pull out the latest pressure. At this time, must pay attention to the inner ring under the pulling force. Remove the oil pressure method is used to large bearing inner circle. By setting on the axis of hydraulic oil hole, in order to make easy to pull out. Width of the bearing is oil pressure method and drawing fixture and disassembly operations. NU, NJ cylindrical roller bearing inner ring remove can take advantage of the induction heating method. In a short time heating the local, make the inner ring expansion after drawing method. Removal of relatively small tight sleeve bearing, with fastening on the shaft gear support inner ring, the nuts back a few times, use the block with a hammer beating the disassembly. Large bearing, using the hydraulic remove easier, in the oil hole on the shaft taper hole pressure oil, make the inner ring expansion, remove the bearing method. Operation, has a bearing may suddenly emerge, it is best to nut used as gear block as well. 1, axis and the choice of koyo bearings and control into the bearing bearing tolerance pressure should be no piece of flexible rotation direction. If significant rotation is not flexible, so the size of the shaft is too big, falling. As after entering the obvious sense of tolerance by hand 'sasha vujacic' axis rotation axis pressure bearing may be too poor or shaft roundness. As a result, is also a good shaft and bearing should be controlled in the roundness tolerance, tolerance control for many domestic manufacturers, no control of roundness. 2, bearing assembly method because bearings are precision products, such as improper assembly channel, it is easy to damage the koyo bearings, bearing damage. In the bearing assembly should have a special mould, can't hit people, into the shaft when the pressure is only a small circle, circle, only according to the stress cycle. Pneumatic or hydraulic assembly requirements, the use of pressure to the mold under the outside installed in a horizontal state, if inclined to bearing channel will lead to the damage caused by the power, and make the guide ring bearings bearing. 3, assemble foreign body to prevent installed on the rotor dynamic balance, it is easy to produce dynamic balance into the bearing iron bearing, so it's best to do bearing balance before loading. Some manufacturers in order to facilitate assembly, with some oil or grease lubrication of internal coating, but the operators bearing assembly is often difficult to control the amount, if oil or grease in the large indoor bearing, bearing accumulation along the axis, it is easy to into the bearing rotation. Japan is one of the best room bearing, oil or grease, such as the bearing, can not have the accumulation of control room. 4, the characteristics of the antirust coating paint rust is in a sealed assembly type motor more sounds good, but is put in the warehouse for a long time, the motor is very abnormal sound, remove bearing serious rust. Many manufacturers will be deemed to be the front bearing problem, through our continuous publicity, have now realized, the main electrical appliance factory is a problem of insulating varnish. The main problem is that the insulating paint volatile acid in a certain temperature, humidity, corrosive substances, koyo bearing channel leads to the formation of corrosion damage. Now the only problem is to choose a good varnish, air dry for a period of time after assembly.