
46
Rockwell Automation Publication MM-IN001B-EN-P - February 2022
Kinetix MMA Asynchronous Main Motors Installation Instructions
Lubrication Procedures
Where applicable, the motor design has a positive lubrication system for routing new grease directly into the bearing. Follow these steps to lubricate the motor:
1.
Locate the grease fitting on the motor and/or in the side access panel.
2.
Remove the grease drain plug opposite the grease inlet.
Figure 16 - Grease Port Locations
3.
Use a manual grease gun to pump in the recommended amount of grease.
4.
Replace any temporary grease fittings that were installed, and then wipe away any excess grease.
5.
Reattach the grease drain plug.
6.
Attach the rear access panels that were removed. See
for torque values.
Brush for Shaft Currents
Some motors are equipped with a shaft grounding brush (bearings option) or Aegis rings (special option). Their purpose is to close the electric circuit existing between the
rotor and the motor structure, which allows the shaft voltage discharge currents to pass through the brush and not the bearings. Normally, the brush is installed on the non-
drive end (NDE) side of the motor. A periodic check should take place every 8000 working hours. Replace the brush when there is approximately 5 mm (0.2 in.) of conductive
carbon brush remaining.
Table 44 - Type of Grease for High Speed Ball Bearings
Manufacturer
Type
Composition
Color
SKF
LGHP2
Mineral di-urea
Blue
Lubcon
Thermoplex 2 TML
Mineral with lithium
Cream
Kluber
Isoflex LDS 18 Special A
Mineral with lithium
Yellow
ATTENTION:
It is recommended to perform lubrication procedures with a warm motor and stationary shaft.
Failure to observe these precautions could result in personal injury.
Brush size specifications for replacement: 5 x 8 x 20 mm (0.2 x 0.31 x 0.79 in.)
ATTENTION:
This level of service must be done at an authorized Rockwell Automation Service Center.
Front Grease Fitting
Rear Grease Fitting
Table 45 - Rear Access Panel Torque Specifications
Motor Cat. No.
Screw Type
Torque
N•m (lb•in)
MMA-B080
xxx
M4
2.5 (22.13)
MMA-B100
xxx
MMA-B132
xxx
M5
4.0 (35.40)
MMA-B160
xxx
MMA-B180
xxx
MMA-B225
xxx
M6
6.0 (53.10)