Process and methods of disassembling the motor (2)

Source: China Bearing Network Time: 2014-05-07

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2 Disassembly and assembly of the primary components (1) Disassembly and assembly of the pulley or coupling. When disassembling; first make a bearing symbol between the pulley or the coupling and the shaft; unscrew the fixing screws and pins; then use The puller is gradually pulled out. If it is not pulled out, the ignition oil can be pulled in the inner hole and pulled. If it is still not pulled out; it can be heated quickly by the rapid fire around the pulley or the coupling; the shaft is wrapped with a damp cloth; and the cold water is continuously poured; To prevent heat from being introduced into the motor. When installing, first lubricate the shaft hole of the shaft, pulley or coupling with a fine iron abrasive cloth; align the pulley or coupling with the keyway on the shaft; use wrought iron or hardwood Pad on the end of the key; quietly knock the key into the slot. The key should be tight in the slot; too tight or too loose will hurt the key and the injury slot; too loose will make the belt slip or oscillate.
(2) Disassembly and assembly of the bearing cover. It is very simple to disassemble the bearing cover; just unscrew the screw that fixes the bearing cover; the front and rear bearing covers can be removed. The front and rear bearing covers should not be marked off the mark; The front and rear mountings are wrong. The bearing cover is installed by inserting the outer cover through the rotating shaft outside the end cover; inserting a screw; holding the screw with one hand; changing the rotating shaft with one hand; When the screw holes of the cover are aligned, the screws can be inserted into the screw holes of the inner cover and tightened; finally, the other two screws are also tightened.
(3) Disassembly and assembly of the end cap. Before disassembling; make a symbol at the joint between the end cap and the base; to recover. Then unscrew the screw that secures the end cap; gradually lower the end cap with a screwdriver (screw the screw) Both the front end cover and the end cover should be marked symmetrically.) The front and rear end covers should be marked; avoid mistakes during and after installation. When installing; align the seam symbols of the casing and end cover; install the end cover. The screw is tightened (the screw should be screwed symmetrically according to the pair; and it should be tightened several times; and it should not be loose or tight; avoid damage to the end cap). Change the rotor at any time; to see if the transition is sensitive.
(4) Disassembly and assembly of the rotor. After the front and rear end caps are removed; the rotor can be extracted. Because the rotor is very heavy; care should be taken not to damage the stator coil. About the small motor rotor; when pulling out, grab the rotor with one hand; pull the rotor Put out some; use the other hand to hold the rotor; gradually move outward. About large motors; when pulling out the rotor, both people should lift one end of the rotor; gradually move outward. When installing; follow the reverse process mentioned above; 2. Carefully enter the intestine in the middle of the quasi-stator cavity.
(5) Disassembly and assembly of rolling bearings. The method of disassembling the rolling bearing is similar to disassembling the pulley; it can also be carried out with a puller. If there is no pulling device; the two shafts can be used to clamp the rotating shaft. The rotor is suspended; then the upper end of the rotating shaft is studded. After the block or copper block; use the hammer to make the bearing disengaged and removed; pay attention to safety during the operation. When installing; find a flat iron pipe with an inner diameter slightly larger than the outer diameter of the shaft, and insert the shaft into the shaft; On the inner ring of the bearing; you can hit the block with a hammer at the nozzle. Make the bearing fit into the rotor positioning. Pay attention to the tightness between the inner circle and the shaft of the bearing. If it is too tight; use the fine sand cloth to rotate the shaft. All around; evenly sand it; after the bearing is inserted, it can adhere to the usual tightness. The outer ring of the bearing and the end cap should not be too tight. Pay special attention when assembling the motor; if the end cap, The bearing cover is installed in the correct orientation; or the tension and uniformity of the screw are not grasped; the rotor of the motor will be miserable; the formation of a broom and other undesirable problems will occur.

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