Teco Installation and Maintenance Manual
TEFC Squirrel Cage Induction Motors
Teco Electric and Machinery Company
Manual Number: IOM ~ TEFC Rev.01
7.1.4. Grease Lubricated Type.
Keeping the bearing lubricant in top condition is extremely important in the
maintenance of bearings. It is a prerequisite of extended bearing life to
replenish grease using the correct grade, quantity and time interval, please
do not mix different types of grease.
The reasons for grease replenishment are:
a. Assure the rolling contact surface has no metal to metal contact.
b. Form a lubrication membrane on the rolling contact surface to reduce noise.
c. Purge the motor of old and contaminated grease, please ensure that the
grease in the discharge chute is pliable and will allow new grease to enter.
d. The presence of the correct grade and quantity of grease reduces corrosion,
protects and seals the bearing and lowers vibration.
7.1.5. Grease replenishment period:
The life of grease varies depending on model, speed, temperature,
operational conditions etc., it is, therefore, impossible to determine the
exact time interval for replenishment.
However, under normal conditions the greasing interval is shown in Table 3
can be used as a guide.
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