Motor mechanical appearance inspection

2019 - motor mechanical appearance inspection 07 - 25 1, the shell of the motor should be no crack, heat sinks and unrestricted air duct should be in good condition, no mechanical damage and breakage, junction box complete and terminal marked clearly. Directly lead to the lead wire connection of the motor should be strong and insulating sheath intact, wire nose or welding is good, the number is complete, the attachment is complete and no damage. The number of 2, the capacity of the motor, or speed should be consistent with being dragged equipment, motor form should be adapted to working conditions and drag the equipment. 3, disc rotor should shine card, can not have magnetic card or hit voice, the voice of the front and rear bearing without exception, should be uniform 'buzzing sound, usually with screw whorls or iron audition. 4, open the bearing cover, check the lubrication grease should be normal, no discoloration, metamorphism and hardening of the phenomenon, the performance in accordance with the working conditions of the motor. Before and after 5, bearing no kuang move up and down, without moving. 6, brush and collector ring should contact closely, radian, uniform pressure, the general should be 0. 015 - 0. Between 025 mp, the method of available note pressure test, brush pen. look and collector ring should be smooth and no burr, clean, no traces of edm shading, no pollution. Connected to the brush belt should be strong, good contacts, must not with rotational part or spring contact. Brush the insulation pad should be in good condition. Brush in the brush holder can move freely up and down, the gap is in commonly 0. 1 - 0. 2mm。