Rockwell-automation HPK-Series Asynchronous Servo Motor Manual do Utilizador descarregar pdf (Página 29)

HPK-Series Asynchronous Servo Motors 29

Publication HPK-IN001C-EN-P - June 2010

Troubleshooting and Maintenance

Standard troubleshooting and maintenance of this motor requires completion of these tasks:

• Bearing inspection

• Bearing greasing and repacking

• Periodic lubrication of a motor

• Shaft key removal and installation

Bearing Inspection

Frequent bearing checks are recommended. If bearing or motor temperatures become excessive,

investigate the cause. Total bearing temperatures should not exceed 90 ºC (194 ºF). Causes of

high bearing temperature are typically due to these conditions.

• Contaminated grease

• Insufficient or excessive amount of grease

• Incorrect grease

• Excessive load or thrust due to misalignment or motor overload

• Loose bearings

• Bearing failure

• Excessive ambient temperature

Grease and Repack Bearings

Follow this procedure when packing new bearings or repacking bearings after servicing a motor.

1. Apply one continuous bead of grease around the inboard side of the bearing, between

the bearing and the inner cap.

2. Apply one continuous bead of grease around the outboard side of the bearing, between

the bearing and the inner cap.

3. Verify that the grease applied in steps 1

and 2 adheres to the balls or rollers.

4. Completely fill the grease inlet and outlet passage holes with grease.

5. Fill the outboard bearing cavity 60…90% full of grease.

BURN HAZARD: Outer surfaces of the motor can reach high temperatures during

motor operation.

Take precautions to prevent accidental contact with hot surfaces. Consider motor

surface temperature when selecting motor mating cable connections.

Failure to observe these safety procedures could result in personal injury or

damage to equipment.

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Rockwell-automation HPK-Series Asynchronous Servo Motor Manual do Utilizador Página 29