CD® Double Flex Coupling

Aluminum Hubs

Available in 1.85" to 6" diameters (47mm to 152mm), with continuous torque to 6,350 inch pounds (718Nm).
Misalignment up to 3° angular, 0.069" (1.8mm) parallel and 0.260" (6.6mm) axial.
The double disc pack coupling is recommended in applications where shafts are double-bearing supported or where additional parallel misalignment is present in the system.
The coupling's large misalignment capability makes installation simple and lends itself to a wide variety of industrial applications.

Aluminum Hubs Performance Information

Set Screw Aluminum Hubs Dimensions Chart

Clamp Style Aluminum Hubs Dimensions Chart

Double Flex Aluminum HubsPerformance Information

6P18A(C) 6P22A(C) 6P26A(C) 6P30A(C) 6P37A(C) 6P45A(C) 6P52A(C) 6P60A(C)
Max. HP/100 RPM
 .29 .43 .75 1.27 2.54 3.97 5.65 10.08
Continuous
Rated Torque
in-lbs (Nm)
 180
20		 270
30		 475
53		 800
90		 1600
181		 2500
282		 3560
402		 6350
718
Torsional
Stiffness
in-lbs/Deg. (Nm./Rad)
 850
5,500		 1310
8,482		 1500
9,712		 3231
20,923		 5051
32,700		 9317
60,324		 12,682
82,109		 20,196
130,763
Maximum Speed
                
A Hub (RPM)
 17000 15000 10500 11000 7400 7200 5100 4600
Clamp Hub (RPM)
 15000 11000 9500 8000 6700 5600 4800 4400
Misalignments:
                
Angular
Degrees
 3 3 3 3 3 3 3 3
Parallel:
Inch (mm)
 .022
0.56		 .026
0.66		 .030
0.76		 0.039
1.0		 0.049
1.2		 0.052
1.3		 0.062
1.6		 0.069
1.8
Axial:
Inch (mm)
 .060
1.5		 .072
1.8		 .086
2.2		 0.100
2.5		 0.140
3.6		 0.180
4.6		 0.220
5.6		 0.260
6.6
A Hub
               

Unit Weight
at Max Bore
Lb. (kg.)

0.28
0.13		 0.62
0.28		 0.85
0.39		 1.34
0.61		 2.66
1.21		 4.38
1.99		 6.58
2.98		 9.67
4.38

Unit Inertia
at Max Bore
lb-in2 (kg-cm2)

0.13
0.38
 0.43
1.25		 0.68
1.99		 1.52
4.43		 4.81
14.07		 11.6
33.8		 23.6
68.9		 46.3
135
Clamped Hub (C)
                

Unit Weight
at Max Bore
Lb. (kg.)

0.45
0.20		 0.74
0.34		 1.01
0.46		 1.68
0.76		 3.38
1.53		 4.78
2.17		 7.12
3.23		 10.5
4.8

Unit Weight
at 1/2 Max Bore
Lb. (kg.)

0.40
0.18		 0.68
0.31		 0.92
0.42		 1.39
0.63		 2.80
1.27		 4.66
2.12		 6.41
2.91		 9.5
4.3

Unit Inertia
at Max Bore
lb-in2 (kg-cm2)

0.22
0.21		 0.52
1.51		 0.87
2.54		 1.99
5.81		 6.05
17.68		 12.8
37.4		 26.4
77.2		 51.6
150.9

Unit Inertia
at 1/2 Max Bore
lb-in2 (kg-cm2)

0.15
0.45
 0.45
1.32		 0.70
2.04		 1.50
4.38		 4.87
14.24		 11.5
33.8		 22.4
65.4		 43.8
128.1

Notes:

  • Peak torque is two times the continuous torque rating.
  • Weight and Inertia data are for maximum bore in Style "A" and Style "B" hubs.
  • Consult factory for speeds higher than those listed and balancing requirements, if necessary.
  • Consult factory for higher torque and higher torsional stiffness couplings.
  • Sizes larger than 6" (152 mm) in diameter are not stocked and will require longer delivery times.
 

Double Flex Setscrew Aluminum Hubs Dimensional Information

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Click here for Clamp Style Aluminum Hubs

 
Double Flex Setscrew Aluminum Hubs Dimension Information

6P18A 6P22A 6P26A 6P30A 6P37A 6P45A 6P52A 6P60A
A Inch
(mm)		 1.85
47.0		 2.25
57.2		 2.59
65.9		 3.00
76.2		 3.75
95.3		 4.50
114		 5.25
133		 6.00
152
B
Inch
(mm)		 .625
15.9		 .938
23.8		 1.06
27		 1.25
31.8		 1.44
36.5		 1.69
42.9		 1.94
49.2		 2.44
61.9
C Inch
(mm)		 .803
20.4		 .956
24.3		 1.03
26.3		 1.42
36.1		 1.67
42.4		 1.85
47.0		 2.11
53.5		 2.41
61.2
Max Bore
Ea
"A" Hub		 Inch
(mm)		 .625
16		 .625
16		 .750
19		 1.000
25		 1.250
32		 1.625
42		 1.875
48		 2.250
60
Ga
"A" Hub		 Inch
(mm)		 1.125
28.6		 1.219
31		 1.502
38.2		 1.71
43		 2.19
56		 2.69
68		 3.31
84		 3.67
93
H Inch
(mm)		 .790
20.1		 .907
23.8		 1.00
25.4		 1.21
31		 1.51
38		 1.81
46		 2.10
54		 2.42
61
L Inch
(mm)		 2.05
52.1		 2.83
71.9		 3.16
80.2		 3.92
100		 4.55
115		 5.23
133		 5.98
152		 7.29
185
X
 Inch
(mm)
.51
13		 0.39
9.9		 0.39
9.9		 0.68
17.3		 0.91
23.1		 0.73
18.5		 0.69
17.5
Y Inch
(mm)		 .48
12.2		 .64
16.3		 .47
12		 0.68
17.3		 0.95
24.1		 1.35
34.3		 1.10
27.9		 1.42
36.1
Notes:

"X" and "Y" dimensions are minimum bolt travel required beyond the hub to disassemble the disc packs and/or intermediate member from the Hubs.

Rotating equipment is potentially dangerous.  The user should be sure suitable guarding is provided and applicable safety codes are met.

For applications such as man lifts, ski/tow lifts, freight/passenger elevators or escalators, consult factory.

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The right to make engineering refinements on all products is reserved.
Dimensions and other details subject to change.
When dimensions are critical, detailed drawings should be obtained from the factory.

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