Clearance of SKF miniature bearing structure of the main causes of burn

First of all, some equipment in using SKF bearing on its own special strict clearance problem, if the clearance is too large, even a little bit big, it will be easy to make the equipment parts wear and tear, so by reducing clearance had to solve this problem, but then another question again, that's clearance is too small, heat dissipation, cooling if improperly, can easily lead to internal temperature eventually miniature bearing overheat and burn! 1) The original clearance SKF bearing clearance refers to the original bearing before installed on the machine, after complete the clearance is under a state of freedom. So the original clearance inspection clearance is often used as a substitute. Inspection clearance is in the state, under the condition of applying load measurement, instrument detection and clearance data, yan said on the bearing of the original clearance is not the same, but in general the two on the readings were similar, and thus can be replaced each other without much error. 2) Effective clearance effective clearance refers to the bearing clearance or work after installed on the host, under certain load, reaches a certain temperature stable operation condition, SKF bearing that exist in the actual clearance. Obviously, the effective clearance is smaller than work clearance. 3 bearing clearance existed in the role and requirements of the bearing clearance is flexible in order to guarantee the bearing without some blocks, but also to ensure the bearing running smoothly, the axis of the miniature bearing no significant settlement, and bear the load of the number of roller as much as possible. May be too much load ( Preloading is too big) 。 Speed is too large. Clearance is too small. With water or other foreign matter invasion. If the above two cases are not the shaft, the accuracy of bearing box, shaft deflection. See here, I think everyone wants to know the solution, first of all, to study lubricants and lubrication method, choose to import bearing lubricant, and its dosage, and the selection of the bearing must be corrected. Study to cooperate, bearing clearance, and preloading, and improve the sealing device. Check the shaft and the precision of the bearing housing. Of course, if you have any experts beside you, let him follow you learn best operation! Bearing maintenance: SKF bearing clean: remove bearing repair, first record the appearance of the bearing, confirm the residual stock of lubricant, sampling inspection with lubricant, bearing. Common use gasoline, kerosene as a cleaning agent. Tear open come down to the bearing cleaning, rough washing and fine washing, respectively in the container, put a metal mesh bottom first, make the bearing is not direct contact with dirt from the container. Coarse when cleaning, if to spin bearing with dirt, can damage the bearing rolling surface, should be pay attention to. In coarse clean oil, use a brush to remove grease, adhesive, after clean, roughly into fine cleaning). Bearing maintenance: for as long as possible in good condition to maintain SKF bearing performance, maintenance, repair, in order to prevent accident arrangement to ensure the reliability of operation, improve the productivity and economy. To maintain the best conditions of mechanical operation of the corresponding operation standard, on a regular basis. Content includes monitor running status, supplement or replacement of lubricants, remove the check on a regular basis. Points for maintenance operation, with the rotation of the miniature bearing the sound, vibration, temperature, the state of the lubricants and so on.