Couplings

REX ® THOMAS ® FLEXIBLE DISC COUPLINGS
Couplings
HIGH PERFORMANCE SERIES 63
Series 63 couplings incorporate a patented* one-piece disc/diaphragm flexing element for positive torque transmission with low restoring
forces. This unitized assembly accommodates misalignment and transmits torque through a multiple disc arrangement which provides
redundancy in construction with a high degree of reliability. Pilot plates on the sides of each flexing element give accurate, repeatable
registration of coupling components, and retain original dynamic balance repeatability while protecting the flexing members from damage.
Series 63 couplings are ideal for the most demanding drive requirements. Prime movers include motor, steam and gas turbines, rotary
engines, and gas expanders. Driven equipment applications include centrifugal and rotary compressors, generators, test stands, boiler feed
pumps and other multi-stage pumps, and marine propulsion drives. Special designs available for torsional tuning and reduced moment.
* U.S. Patent 4055966
Construction
Hubs and Center Member: Heat Treated 4140 Steel
Bolts: Alloy Steel
Disc Packs: High Strength 300 Series Stainless Steel
Coatings Available: Black Oxide, Zinc, Cadmium, other coatings
available per customer specifications
Other materials such as Stainless Steel, Monel and Inconel are
available; please consult Rexnord Industries, Inc.
A G H
E
D
K
B
N
C
B1
F
Coupling
Size
62
32
SERIES 63 COUPLINGS MAY BE FURNISHED TO MEET REQUIREMENTS OF API 671
Max. Bore
Hydraulic
H
Keyed
K
A B B1
General Dimensions (inch)
1
Std.
C
Min.
C D E F
2
G
Max.
Note: Dimensions subject to change. Certified dimensions of ordered material furnished on request.
N
Axial
Capacity
(in.)
1 2.00
1.88
4.25
2.06
1.88
5.00
3.25
2.41
2.22
8.94
2.81
0.53
±0.050
200
2.62
2.45
5.47
2.75
2.45
5.00
4.12
3.38
3.19
10.20
3.68
0.68
±0.070
225
2.81
2.62
5.72
2.91
2.62
5.00
4.25
3.50
3.31
10.53
3.94
0.70
±0.055
262
3.22
3.00
6.72
3.38
3.00
6.00
4.75
3.94
3.69
12.38
4.50
0.78
±0.060
312
3.75
3.50
8.00
3.94
3.50
6.00
5.00
4.75
4.44
13.44
5.25
0.94
±0.075
350
4.16
3.88
8.91
4.38
3.88
7.00
6.44
5.00
4.69
15.26
5.81
1.13
±0.080
375
4.69
4.38
9.88
4.88
4.38
7.00
6.62
6.06
5.72
16.26
6.56
1.17
±0.090
425
4.97
4.62
10.69
5.28
4.62
8.00
7.37
6.50
6.06
17.90
6.94
1.31
±0.100
450
5.36
5.00
11.50
5.69
5.00
8.00
7.62
7.00
6.55
18.69
7.50
1.37
±0.110
500
6.00
5.58
13.12
6.47
5.58
9.00
8.50
7.75
7.19
21.05
8.38
1.48
±0.120
550
6.70
6.25
14.75
7.38
6.25
9.88
9.88
8.75
8.06
23.51
9.38
1.73
±0.140
600
7.33
6.83
16.38
8.06
6.83
11.25
11.2
5 9.38
8.58
26.14
10.25
2.03
±0.150
700
8.17
7.62
18.69
8.97
7.62
12.00
– 10.63
9.67
28.59
11.44
2.10
±0.175
750
8.84
8.25
20.31
9.69
8.25
14.00
– 11.81
10.80
31.94
12.38
2.30
±0.190
For Complete Selection, Dimensions And Mass-Elastic Data, Refer To Rexnord High Performance Coupling Catalog Or Contact Rexnord.
Larger sizes are available. Consult Rexnord with specific application requirements.
➀ Standard dimension - may be modified as necessary.
➁ “G” dimension at listed maximum bore. Dimension “G” will vary depending on bore size.