Group 16, Electrical Motors
16-2-2 • Drive Motor Overhaul SM 765, Nov ’06
Ball Bearings
Both ball bearings are maintenance free. If it becomes
necessary to remove the bearings to repair the motor, they
should be replaced. In any case the seals (shaft oil seal and
O-ring) must be replaced.
In general bearings should be replaced at approximately
10,000 operating hours.
Encoder Bearing
The encoder bearing is used to communicate the motor
speed to the controller.
N
TE
The encoder bearing is very sensitive to static
electricity. If you are going to be working on
the encoder bearing you should have a
ground strap on to insure that the encoder
bearing does not get damaged.
Rotor
Stator
Encoder Bearing
Non-Drive End Frame
O-Ring
Ball Bearing
O-Ring
Drive End Frame
Shaft Seal
Wave washer
Screw
Terminal Block
Terminal Block
Mounting Bracket