4. get more friction motor. This is the cause from the rotating shaft caused the axis to indent the rotating shaft of the motor load, bearing abnormality, or malfunction of the mechanical transmission system. When the motor must contend with more friction, it will, for example, the temperature of the motor is increased.5. malfunction of the motor, electrical system. For example, the voltage supply, the motor is lower than the coordinates fall stream flows in the motor torque sufficient to drive the load. In addition, it may be because the connection polarity or connection of motor coil is loose causing a higher heat in the windings.
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