TECHTOP MS1/MS2 Series - Motors with regreasable bearings

LOW VOLTAGE MOTORS - Installation, operation, maintenance and safety manual - rev. 01 - 1.07.2016
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In the event fo motors driven by frequency converter, the stated average lifetime have to be reduced by 25%. Operation hours for vertical motors are half of
the above values.
5.2.2 Motors with regreasable bearings
WARNING!
During the rst start or after a bearing lubrication a temporary temperature rise may appear, approximately 10 to 20 hours.
Lubrication intervals are driven in accordance to the following motor parameters:
1) horizzontal mounting position B3
2) ambient temperature 25°C
3) max bearing working temperature 80°C
4) motor operating condition in line with the nominal parameter reported in the motor name plate, like rspeed,power,etc.
WARNING!
Bearings lifetime values below reported, are valid for permitted load values given in the product catalog. Depending on application and load conditions, see
the applicable product catalog or contact TECHTOP. Data above reported will be in compliance with item 5.2, and are refered at the following motor working
conditions, ambient temperature 25°C, max bearing working temperature 80°C. Medium bearing lifetime value showed should be halved for each increment
of 15°C of the ambient temperature.
WARNING!
With the aim to keep the stated average lifetime it is important to perform periodical inspections on the motor, in order to prevent temperature increases on
the bearings due to eventual dirt accumulating on the motor housing or on the ventilation system.
In the event fo motors driven by frequency converter, the stated average lifetime have to be reduced by 25%.
Operation hours for vertical motors are half of the above values.
A. Manual lubrication
Regreasing while the motor is running
– Remove grease outlet plug, located down in the front shield/ange and in the rear shield.
– Be sure that the lubrication channel located on the front shield/ange (DE side) and on the rear shield (NDE side) is open
– Inject the specied amount of grease into the bearing.
– Let the motor run for 1-2 hours to ensure that all excess grease is forced out of the grease outlet plug. Close the grease outlet plug.“
Regreasing while the motor is at a standstill
If it is not possible to regrease the bearings while the motors are running, lubrication can be carried out while the machine is at a standstill, repeat the
instruction for regreasing while the motor running, with the described below variants: