High Performance Diaphragm Couplings

High Performance Diaphragm Couplings

Diaphragm Couplings allow the transmission of torque. They can handle misalignment, based on the thickness distribution (or profile) of the diaphragm. Unlike competing designs, we use a single stainless steel diaphragm. This eliminates the need for extra bolts, rivets, splines and filler rings.

It also greatly simplifies the task of shaping the perfect diaphragm, since we need only one diaphragm per end. We use a modified profile based on extensive FEA. The thickness of the diaphragm varies so stress is distributed evenly when the diaphragm flexes. This happens under the simultaneous effects of torque, speed, axial misalignment and angular misalignment.

Features & Benefits:

 

  • All couplings are custom designed to meet the specific requirement of the application and OEM – Engineered drive solutions.
  • Meets API 671.
  • Drop in replacement of Lucas®: (Bendix) diaphragm coupling – click above for details.
  • Marine and Reduced Moment Designs.
  • Field replaceable, stockable diaphragm – not available from anyone else.
  • Specially contoured one piece design – easy to install, cost competitive and easy to customize.
  • Patented one piece design – handles more misalignment and greater range of torsional stiffness.
  • Torque capacity over 50 million In-Lb. (5650 kN-m).
  • Shaft diameter over 19 inches (480 mm).
  • Other features: piloted fits, 15-5 pH stainless steel and other material available, shot peened, inherently low windage.
  • Options: Electrically insulated, shear section, back up or fail safe gears, various materials, and many more.

Additional Data 

MS Style Selection and Dimensional Data (Imperial Units)

Size Series (1)(2)
Max.
Continuous
Torque
Rating
(in-lb)
(3)
Axial
Rating
per End
(+/- in)
(3)
Misalignment
Rating
per End
+/- deg)
Maximum
Speed
(RPM)
Total
Weight
(lbs)
Total WR2
(in-lb2)
Half
Coupling
C.G.
(in)
Total
Stiffness
K
(lb-in/rad x 104)
Spacer Tube/in
Coupling
OD
A
(in)
(4)
Bore
(mx.)
B
(in)
(5)
Shaft-to-Shaft
(min.)
C
(in)
No.
(in)
Ni
(in)

E
Standard

(in)

Max.
OD
O
(in)
K
(lb-in/rad x 104)
Weight
(lbs)
WR2
(lb-in2)
1.0 MSM 19000 0.063 0.33 24000 22.2 80 0.53 0.4 9.2 0.18 0.20 6.00
3.25
4.68
2.33
2.15 3.03
4.50
1.0 MSH 25000 0.050 0.25 24000 23.3 80 0.49 0.5 11.7 0.24 0.30 2.09
1.0 MSX 36000 0.035 0.20 24000 24.7 80 0.41 0.7 17.0 0.36 0.40 1.95







 











1.5 MSM 38000 0.075 0.33 20000 35.4 160 0.72 0.9 21.1 0.31 0.50 7.00
4.00
5.69
2.72
2.45 3.59
5.25
1.5 MSH 50000 0.060 0.25 20000 37.4 170 0.67 1.1 27.4 0.42 0.70 2.35
1.5 MSX 72000 0.040 0.20 20000 41.5 170 0.58 1.4 39.0 0.65 1.00 2.12












 

 



2.0 MSM 89000 0.106 0.33 17000 64 480 0.70 2.4 64.6 0.55 1.60 9.16
5.38
6.75
3.59
3.23 4.19
7.25
2.0 MSH 118000 0.085 0.25 17000 67 490 0.64 3.0 84.6 0.74 2.10 3.09
2.0 MSX 170000 0.060 0.20 17000 75 510 0.53 3.8 121 1.16 3.00 2.77





 







 




2.5 MSM 169000 0.125 0.33 14000 99 1000 0.79 5.1 149 0.82 3.70 10.95
6.75
8.31
4.43
3.99 4.75
9.00
2.5 MSH 225000 0.100 0.25 14000 104 1000 0.72 6.2 199

1.15

4.90 3.80
2.5 MSX 325000 0.070 0.20 14000 117 1100 0.60 7.7 286 1.81 7.00 3.39




   

 








 
3.0 MSM 308000 0.156 0.33 13000 166 2500 1.26 10.4 328 1.27 8.10 13.09
8.25
9.00
5.31
4.74 6.03
11.00
3.0 MSH 410000 0.125 0.25 13000 175 2500 1.16 12.6 435 1.77 10.70  4.50
3.0 MSX 590000 0.085 0.20 13000 194 2600 1.00 16 623 2.80 15.30 6.03




















3.5 MSM 450000 0.175 0.33 12000 226 4500 1.31 17 595 1.44 14.60 14.88
9.50
9.69
6.62
6.11 6.56
12.25 
3.5 MSH 600000 0.140 0.25 12000 239 4600 1.23 20 791 1.98 19.50 5.91
3.5 MSX 860000 0.095 0.20 12000 258 4800 1.09 24 1135 3.02 27.90 5.50




















4.0 MSM 690000 0.206 0.33 11000 465 12500 2.43 29 968 2.13 23.80 16.97
11.00
14.31
7.03
6.31 9.00
14.25
4.0 MSH 920000 0.165 0.25 11.000 180 12600 2.33 34 1285 2.96 31.60 6.01
4.0 MSX 1320000 0.110 0.20 11000 510 13000 2.16 42 1846 4.67 45.40 5.33




















4.5 MSM 1010000 0.231 0.33 10000 581 18600 2.66 43 1628 2.72 40.10 18.97 12.50 15.00 8.06 7.26 9.81 16.25
4.5 MSH 1350000 0.185 0.25 10000 602 19000 2.55 52 2161 3.76 53.20



6.93

4.5 MSX 1930000 0.125 0.20 10000 639 19500 2.36 62 3086 5.87 75.90    

6.21





















5.0 MSM 1410000 0.263 0.33 9000 825 35300 2.86 64 2552 3.37 62.80 21.16 14.00
14.75
9.06
8.18 10.88
18.25
5.0 MSH 1880000 0.210 0.25 9000 852 35900 2.74 76 3385 4.65 83.30  7.82
5.0 MSX 2710000 0.140 0.20 9000 900 36800 2.55 91 4881 7.32 120.10 7.01




















5.5 MSM 1790000 0.281  0.33 8000 1097 53800 3.25 82 3366 4.01 85.00 22.91
15.00
18.94
9.69
8.71 12.00
19.75
5.5 MSH 2380000 0.225 0.25 8000 1129 54600 3.14 97 4596 5.56 113.10 8.30
5.5 MSX 3420000 0.155 0.20 8000 1186 5580 2.94 115 6587 8.73 162.10 7.39

 

RM Style Selection and Dimensional Data (Imperial Units)

Size (6)
Series
(1)(2)
Max.
Continuous
Torque Rating
(in-lb)
(3)
Axial
Rating
per Cplg.
(+/- (ln.)
(3)
Misalignment
Rating
per End
(+/- Deg.)
Maximum
Speed
(RPM)
Coupling
O.D.
A
(in)
(4)
Bore
(nominal)
B
(in)

Shaft-to-Shaft
(min.)
C
(in)

1.5 RMM 30000 0.050 0.25 24000 6.03 2.00 2.50
2.0 RMM 60000 0.062 0.25 19000 7.35 2.50 2.50
2.5 RMM 100000 0.075 0.25 18000 8.67 3.00 3.12
3.0 RMM 160000 0.088 0.25 15000 10.31 3.50 3.12
3.5 RMM 240000 0.100 0.25 14000 11.63 4.00 3.12


 





4.0 RMM 342000 0.113 0.25 13000 13.12 4.50 3.50
4.5 RMM 469000 0.125 0.25 12000 14.53 5.00 4.00
5.0 RMM 624000 0.138 0.25 11000 16.09 5.50 4.00
5.5 RMM 810000 0.150 0.25 10000 17.50 6.00 4.50
6.0 RMM 1030000 0.160 0.25 9000 18.82 6.50 4.62

 

Lucas is believed to be the trademark and/or trade name of Lucas Industries Limited and is not owned or controlled by Regal Beloit Corporation.

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