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Bearing inner race and journal
When the bearing inner ring and the shaft neck or the outer ring and the end cover gap is larger than 0.1mm, the stator and the rotor can be cleaned. Sweep chamber is light, the motor can start running, but Wen Shenggao, a long time easy to burn winding, the heavier cannot start running. Open the motor fault can be seen sweeping abrasion surface are violet. The motor of the bearing sleeve is mostly aluminum shell motor.
There are several reasons for producing the rotary sleeve: the machining accuracy is poor, and the disassembly is frequent and unreasonable. C type steel equipment and the neck is a tight fit, the jacket and the end cover is processed into zero or slightly tight.
In order to prevent the outer sleeve and the end cover of the motor, a special steel sheet is arranged between the outer cover and the end cover. Some will hit the bearing (the correct disassembly and assembly of bearings should be heated) or will be transferred to prevent the loss of steel, will produce the bearing sleeve phenomenon. For the motor bearing the phenomenon of the sleeve, most of the past to use the method to repair the motor bearing, but the effect (especially the end cover) is not ideal. Practice shows that the use of adhesive repair motor bearings, the effect is better.
Large power and high speed motor with metal glue, glue with chlorine tincture small motor power, speed is not high. Maintenance method is to turn the first set of scrub clean, add grease, and then coated with glue, and then install the motor complex. For the turn of the more serious, bearing inner ring and shaft neck or coat and the gap between the end cover larger, can be used in the appropriate thickness of the metal pad in the gap. In order to ensure concentricity should be made of metal oblique mouth. Maintenance of motor bearing practice shows that the vast majority of motor, with the appropriate adhesive applied to the motor bearing clearance can be restored to normal.
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