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Rockwell Automation Publication MM-IN001B-EN-P - February 2022
45
Kinetix MMA Asynchronous Main Motors Installation Instructions
Brake Considerations
Kinetix MMA main motors have various brake options that include electromagnetic brakes, brake status switches (microswitches), hand-release brakes, and a non-brake
option. Most motors allow for any combination of these brake options. Brakes are not designed to be repaired or replaced by the customer.
The hand-release is a non-standard option that can be used on all motor shaft heights, except shaft height 225 with the 400V AC control. This manually operated brake
hand-release is used to assist an operator to disengage a holding brake. See
Operate the Brake Hand-release on page 25
for additional information.
Bearing Inspection and Lubrication
Bearings are an integral part of proper motor maintenance. Some Kinetix MMA main motors have an available temperature sensor that can be used to monitor bearing
temperatures. Causes of high bearing temperatures are typically due to these conditions. See
Motor Load Force Ratings on page 40
and the list that follows for additional
information.
•
Contaminated grease
•
Insufficient or excessive amounts of grease
•
Incorrect grease
•
Excessive load or thrust due to misalignment or motor overload
•
Loose bearings
•
Bearing failure
•
Excessive ambient temperature
For guidance on lubrication intervals for ball bearings and roller bearings, see
.
ATTENTION:
You are not permitted to disassemble the mechanical components of the motor; the exceptions are:
the blower, shaft seal, and the standard encoder replacement procedures. All other motor maintenance must be
performed by a Rockwell Automation authorized service center.
ATTENTION:
Lubrication of the bearings is limited to models that are configured with grease fittings. All motor
maintenance, including disassembly of the motor to repack a bearing, must be performed by an authorized
Rockwell Automation service personnel.
Table 42 - Lubrication Intervals for Motors with a Regreasable Bearing
(1)
(1)
DE bearing catalog numbers: B, D, F, J, K, L, N, Q, and S; NDE bearing catalog numbers: N and Q.
Motor Cat. No.
Operating Speed
Bearings
500 rpm
1000 rpm
1500 rpm
2000 rpm
2500 rpm
3000 rpm
DE
(2)
(2)
Drive end ball bearing.
DE
(3)
(3)
Drive end roller bearing.
NDE
(4)
(4)
Non-drive end ball bearing.
Lubrication Interval (in operating hours)
Grease Quantity (grams)
MMA-B080
xxx
6000
(5)
8000
(6)
(5)
For motors equipped with high speed ball bearings.
(6)
For motors equipped with regreasable bearings.
6500
5500
2700
4700
2000
4000
1500
3500
4
4
—
MMA-B100
xxx
6
6
—
MMA-B132
xxx
12
12
10
MMA-B160
xxx
35
35
30
MMA-B180
xxx
40
40
35
MMA-B225
xxx
6000
4000
2500
2700
2000
1500
75
75
55
Table 43 - Type of Grease for Ball Bearings and Roller Bearings
Manufacturer
Type
Composition
Color
Petro-Canada
Peerless LLG
Mineral calcium sulphonate
Red
Petro-Canada
Precision XL EMB
Mineral lithium complex
Blue
Brugarolas
G.Beslux Komplex M-2
Mineral with polyurea
Cream
Lubcon
Turmosgrease N502
Mineral with polyurea
Yellow
Shell
Alvania R3
Mineral with lithium
Brown