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Quick repair plan for motor shaft neck wear
Date:2025-11-28 14:39     Source:daokedao     Browse:16

The journal of the motor shaft is subject to excessive vibration and decreased efficiency due to bearing wear. Traditional lathe machining and repair can easily cause the journal size to shrink, affecting the fitting accuracy. Daokedao adopts the "melting+precision grinding" process to melt Ni-P alloy coating in the wear area of the shaft neck, with a thickness of 0.1-0.2mm and a hardness of HRC55-58. Repair the roundness error of the rear axle neck to ≤ 0.003mm, control the clearance with the bearing to 0.005-0.01mm, reduce the motor vibration value from 8mm/s to 2mm/s, and restore the efficiency to 97% of the new motor. The repair of the Φ 50mm motor shaft only takes 4 hours, with a repair cost of 800 yuan, saving 3200 yuan compared to the new shaft. A certain manufacturing plant repairs more than 500 motor shafts annually, saving 1.6 million yuan in annual costs. It is suitable for repairing various types of motor shafts such as asynchronous motors and servo motors.

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