M Series clutches incorporate a dual ball bearing supported design that includes high-quality hardened, precision formed and finished steel cams in a cage. The cam cage assembly is engineered for optimum performance and increased capacity. This clutch design provides for the most custom configurable and versatile clutch offered in the industry.
The dual bearing design maintains race concentricity to help provide the most uniform loading of the cams. The M series clutch is designed to mount on through shafts that are secured to the shaft by a matching key provided with each stock bore clutch. Oil lubrication is standard, and grease lubrication is available at no additional cost. This general purpose clutch is intended for backstopping, indexing and overrunning (inner and outer race) applications.
There are four different versions: MG, MI, MR and MO, each customized to specific applications. A full line of accessories are also available to accommodate many different applications:
couplings
torque arms
stub-shaft adapters
oil reservoirs
Additional Data
Model
No.
Torque
Capacity
Maximum
Overrunning rpm
Nominal
Over-
running
Drag
Stock Bores1
lb-ft.
N-m
Inner
Race
Outer
Race
lb-ft.
N-m
Inches
mm
MG300A
275
373
2900
800
.17
0.2
.500
12.70
MI300A
-
-
.625
15.88
MO300A
3600
800
.750
19.05
MR300A
800
2900
MG400A
400
542
2700
800
.21
0.3
.625
15.88
MI400A
-
-
.750
19.05
MO400A
3600
800
.875
22.23
MR400A
800
2700
MG500A
1175
1593
2400
750
.38
0.5
.875
22.23
MI500A
-
-
1.000
25.40
MO500A
3000
750
1.125
25.58
MR500A
750
2400
1.250
31.75
MG600A
2250
3051
1800
700
.63
0.9
1250
31.75
1.375
34.93
MI600A
-
-
1500
38.10
1.625
41.28
MO600A
2400
700
1.750
44.45
1.937
19.20
MR600A
700
2100
2.000
50.80
MG600A
5000
6779
1200
400
1.3
1.8
2.000
20.80
MI600A
-
-
2.250
57.15
2.437
61.90
MO600A
2000
400
2.500
63.50
2.750
69.85
MR600A
400
1750
2.397
74.60
Model
No
Torque
Capacity
Max.Over-
running
rpm
Nominal Over-
running Drag
(lb-ft.)
Stock
Bores1
Ft-lbs.
N-m
Inner
Race
Outer
Race
lb-ft.
N-m
Inches
mm
MG750
7000
9,491
1800
600
3
2.437
61.90
2.500
63.50
MR750>
525
2600
2.750
69.85
2.937
<74.60
3.000
76.20
MI750
-
-
3.250
82.55
3.437
87.30
MG800
13,000
17,626
1300
475
4.0
5
3.000
76.20
3.250
82.55
3.437
87.30
MR800
475
2100
3.500
88.90
3.750
95.25
3.937
100.00
MI800
-
-
4.000
101.60
4.250
107.95
4.437
112.70
MG900
18,000
24,405
1200
400
5.0
7
4.000
101.60
4.250
107.95
4.437
112.70
MR900
400
1850
4.500
114.30
4.750
120.65
4.937
125.40
MI900
-
-
5.000
127.00
5.250
133.35
5.437
138.10
MG1000
25,000
33,896
1200
325
6.0
8
5.000
138.10
5.250
133.35
5.437
138.10
MR1000
325
1600
5.500
139.70
5.750
146.05
5.937
150.80
MI1000
-
-
6.000
152.40
6.250
158.75
6.437
163.50
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