CD® Floating Shaft Coupling

The Zero-Max Floating Shaft coupling provides a means to gap large distances between shaft ends and still provide a zero-backlash coupling with high torsional stiffness.

Click here to see details of the Floating Shaft coupling length capabilities (Dynamic Balancing).

Screw Dimension Information

Maximum Span (DBSE: Distance Between Shaft Ends)

Floating Shaft Performance Information


6F22 6F26 6F30 6F37 6F45 6F52 6F60 6F67
Max. HP/100 RPM
0.43 0.75 1.27 2.54 3.97 5.65 10.08 16.34
Continuous Rated Torque (peak torque is 2 times continuous)

in-lbs.
(Nm)

270
30.5		 475
54		 800
90		 1600
181		 2500
282		 3560
402		 6350
718		 10,300
1164
Base Torsional Stiffness (Note 1) at 12" DBSE (at 300 mm DBSE) in-lbs./deg.
(Nm/Radian)		 516
3379		 857
5589		 1246
8157		 3754
24,439		 7215
46,963		 9921
64,571		 15,749
102,533		 24,219
157,561
Torsional Stiffness Factor Z
Torsional Stiffness Factor Y		 in-lbs./deg.
in-lbs./deg.		 0.052
0.842		 0.086
2.09		 0.125
2.09		 0.375
13.05		 0.722
25.57		 0.992
35.72		 1.575
53.30		 2.422
93.98
Torsional Stiffness Factor Z1
Torsional Stiffness Factor Y1		 (Nm/Radian)
(Nm/Radian)		 0.338
138		 0.559
344		 0.816
344		 2.444
2146		 4.696
4205		 6.457
5874		 10.253
8765		 15.756
15,454
Maximum Misalignments:   (Note 2)                  

Angular:

Degrees 3 3 3 3 3 3 3 3
Parallel: Inch/inch of DBSE
(mm/Meter of DBSE)		 0.052
52		 0.052
52		 0.052
52		 0.052
52		 0.052
52		 0.052
52		 0.052
52		 0.052
52
Axial: Inch
(mm)		 0.060
1.5		 0.072
1.8		 0.100
2.5		 0.140
3.6		 0.160
4.1		 0.180
4.6		 0.200
5.1		 0.220
5.6
A Hubs                  
Base Unit Wt. Style "A" Hubs at 12" DBSE (Note 3)
(at 300mm DBSE)		 Lb.
(kg.)		 2.00
0.9		 3.29
1.5		 4.19
1.9		 8.30
3.8		 13.2
6.0		 20.9
9.5		 28.2
12.8		 39.7
18.0
Weight adder per inch of DBSE
(per meter of DBSE)		 Lb../inch
(kb./meter)		 0.054
0.97		 0.086
1.54		 0.086
1.54		 0.208
3.73		 0.254
4.54		 0.292
5.22		 0.333
5.97		 0.403
7.21
Base Unit Inertia Style "A" Hubs
at 12" DBSE (Note 3)
(at 300mm DBSE)		 Lb.-In.2
(Kg-Cm2)		 0.86
2.5		 1.90
5.6		 3.44
10.1		 11.8
34.5		 28.2
82.4		 61.1
179		 109
320		 201
587
Inertia adder per inch of  DBSE
(per meter of DBSE)		 Lb.-In.2/inch
(Kg-Cm2/meter)		 0.012
1.37		 0.029
3.40		 0.029
3.40		 0.184
21.2		 0.360
41.6		 0.504
58.2		 0.751
86.8		 1.325
153.0
B Hubs                  
Additional Weight for "B" Style Hub (each) Lb.
(Kg.)		 0.04
0.0		 0.00
0.0		 0.25
0.1		 0.30
0.1		 0.42
0.2		 0.45
0.2		 1.5
0.07		 2.3
1.0
Additional Inertia for "B" Style Hub (each) Lb.-In.2
(Kg-Cm2)		 0.09
0.2		 0.14
0.4		 0.48
1.4		 1.2
3.4		 2.7
7.9		 5.4
15.8		 14.6
42.8		 25.8
75.5
Clamp Style Hubs                  
Additional Weight for Clamp Style
Hub (each) maximum		 Lb.
(Kg..)		 0.25
0.1		 0.37
0.2		 0.65
0.3		 1.01
0.5		 1.58
0.7		 1.88
0.9		 2.01
0.9		 2.25
1.0
Additional Inertia for Clamp Style Hub (each) maximum Lb.-In.2
(Kg-Cm2)		 0.15
0.4		 0.33
1.0		 0.77
2.3		 1.90
5.6		 4.33
12.7		 7.26
21.2		 8.73
25.5		 12.25
35.8

Notes:

  1. For Torsional stiffness (K, in.-lb./deg.) of units longer than   12", use the following formula, where L = (DBSE-12) : K = ((ZxY) / ((LxZ) + Y)) x 104.   For torsional stiffness (K, Nm/Radian) of units longer than 300mm, use the following formula, where L = (DBSE-300) : K - ((Z1 x Y1) / ((L x Z1) +Y1)) x 104.
  3. For weight and inertia of units longer than 12", subtract 12" from the DBSE (dimension C) and multiply by weight/inertia adders listed above

 
 

Floating Shaft Dimension Information

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Floating Shaft Dimension Information


6F22 6F26 6F30 6F37 6F45 6F52 6F60 6F67
A
Inch
(mm)
2.25
57.2
2.59
65.8
 3.00
76.2		 3.75
95.3		 4.50
114.3		 5.25
133.4		 6.00
152.4		 6.75
171.5

B
"A" and "B"
Style Hubs

Inch
(mm)

0.94
23.8		 1.06
27.0		 1.25
31.8		 1.44
36.5		 1.69
42.9

1.94
49.2

 2.44
61.9		 2.75
69.9
Bc
"C" Style Hubs
 Inch
(mm) 		1.00
25.4		 1.06
27.0		 1.25
31.8		 1.44
36.5		 1.69
42.9		 1.94
49.2		 2.44
61.9		 2.75
69.9

D Max.
"C" Style Bubs

Inch
(mm)
0.50
12.7
 0.56
14.2		 0.69
17.5		 0.75
19.1		 0.75
19.1		 0.88
22.2		 0.88
22.2		 0.88
22.2
F Max.
"C" Style Hubs
 Inch
(mm) 		1.88
47.6		 2.25
57.2		 2.63
66.7		 3.25
82.6		 3.50
88.9		 4.25
108.0		 4.75
120.7		 5.25
133.4

Ea
"A" Hub
Max. Bore
Inch
(mm)
0.625
16		 0.750
19		 1.000
25		 1.250
32		 1.625
42		 1.875
48		 2.250
60		 2.625
66

EB
"B" Hub
Max. Bore

Inch
(mm) 		1.000
26		 1.250
32		 1.375
35		 1.813
46		 2.250
60		 2.625
66		 3.000
76		 3.375
85
Ec
"C" Hubs
Max. Bore
w / Std. Keyway
 Inch
(mm) 		0.750
19		 0.938
24		 1.125
28		 1.500
38		 1.625
42		 2.125
55		 2.375
60		 2.750
70
Ec
"C" Hubs
Max Bore
w / No Keyway
 Inch
(mm) 		0.938
24		 1.125
28		 1.375
35		 1.875
48		 2.000
50		 2.625
65		 3.000
75		 3.375
85
Ga
"A" Style Hub
 Inch
(mm) 		1.22
31.0		 1.50
38.1		 1.71
43.4		 2.19
55.6		 2.69
68.3		 3.31
84.1		 3.67
93.2		 4.29
109.0
Gb
"B" Style Hub
 Inch
(mm) 		1.88
47.6		 2.16
54.8		 2.50
63.5		 3.13
79.4		 3.75
95.3		 4.38
111.1		 5.00
127.0		 5.63
142.9
H
 Inch
(mm) 		0.91
23.1		 1.00
25.4		 1.21
30.7		 1.51
38.4		 1.81
46.0		 2.1
53.3		 2.42
61.5		 2.72
69.1
X
 Inch
(mm) 		.51
13.0		 0.39
09.9		 0.39
09.9		 0.68
17.3		 0.91
23.1		 0.73
18.5		 0.69
17.5		 0.41
10.4
C Min. (DBSE)
 Inch
(mm) 		2.99
75.8		 3.49
88.5		 3.92
99.6		 5.42
137.7		 6.91
175.6		 7.92
201.1		 8.91
226.3		 10.34
262.7
Dimension L is equal to (2xB)+C (C is the DBSE or Span)
Dimension C is always manufactured to application requirements

Notes:

  1. "X" dimension is minimum bolt travel required beyond the hub to disassemble dsic packs from the hubs.
  2. Rotating equipment is potentially dangerous. User should be sure suitable guarding is provided and safety codes are met.
  3. Consult factory for couplings with higher torque capacity and higher torsional stiffness.
  4. For applications such as man lifts, ski/tow lifts, freight/passenger elevators or escalators, consult factory.
 

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Maximum Span C (DBSE: Distance Between Shaft Ends)
Coupling Size
2250
RPM		 2000
RPM		 1750
RPM		 1500
RPM		 1250
RPM		 1000
RPM		 900
RPM		 750
RPM		 650
RPM

500
RPM

6F22 Inch
(mm)		 46.9
1193		 49.8
1265		 53.2
1352		 57.5
1461		 63.0
1600		 70.4
1789		 74.2
1886		 81.3
2066		 87.4
2219

99.6
2530

6F26 Inch
(mm)		 52.5
1332		 55.6
1413		 59.5
1511		 64.2
1632		 70.4
1787		 78.7
1998		 82.9
2107		 90.9
2308		 97.6
2479		 111.3
2826
6F30 Inch
(mm)		 52.5
1332		 55.6
1413		 59.5
1511		 64.2
1632		 70.4
1787		 78.7
1998		 82.9
2107		 90.9
2308		 97.6
2479		 111.3
2826
6F37 Inch
(mm)		 51.0
1295		 67.3
1709		 75.4
1915		 81.4
2068		 89.2
2266		 99.7
2533		 105.1
2670		 115.2
2925		 123.7
3142		 141.0
3582
6F45 Inch
(mm)		 59.5
1511		 79.2
2012		 84.9
2157		 91.7
2330		 100.5
2553		 112.4
2854		 118.4
3008		 129.7
3295		 139.4
3540		 158.9
4036
6F52 Inch
(mm)		 25.8
655		 38.7
983		 57.6
1463		 86.7
2202		 105.5
2681		 118.0
2997		 124.4
3159		 136.3
3461		 146.4
3718		 166.9
4239
6F60 Inch
(mm)		 33.2
843		 49.0
1245		 71.8
1824		 103.0
2616		 112.8
2866		 126.1
3204		 133.0
3377		 145.7
3700		 156.5
3974		 178.4
4531
6F67 Inch
(mm)		 32.5
826		 49.3
1252		 73.9
1877		 111.8
2840		 124.0
3150		 138.7
3522		 146.2
3713		 160.1
4067		 172.0
4369		 196.1
4981

*Note:  The table above shows lengths and speeds which standard couplings can operate and avoid their natural frequencies.   Couplings at or near table values may require dynamic balancing.  See paragraph for balancing information.  Should your application fall outside of the above parameters, consult factory.  Special construction of the disc pack or floating shaft can increase speeds and/or maximum lengths.
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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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