B Series - Precision Light Duty Flexible Coupling  
  
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Part No.
Thru Bore
D L E F G Clamp
Set
Inch
+.000
-.010
Inch
±.015
Inch
±.005

Note
2
Inch
±.015
Inch
±.005
(screw) Inch
(torque) LB.IN.

Notes
7-11
BTOOO037
.370 .50 .150 .200 0.075 0-80
3
2-56
1.8
BTOOO050
.495 .50 .150 .200 0.075 0-80
3
2-56
1.8
BTOOO062
.620 .62 .180 .260 0.075 1-72
5
4-40
5
BTOOO075
.745 .75 .220 .310 0.095 2-56
7
6-32
10
BTOOO100
.995 1.00 .280 .440 0.125 4-40
18
8-32
20
BTOOO125
1.240 1.25 .310 .630 0.140 6-32
34
10-24
36
BTOOO150
1.485 1.50 .400 .700 0.175 8-32
59
10-24
36
BTOOO162
1.610 1.62 .410 .800 0.195 10-24
77
10-24
36
BTOOO175
1.735 1.75 .410 .930 0.195 10-24
77
10-24
36
BTOOO200
1.970 2.00 .410 1.180 0.195 10-24
77
10-24
36
BTOOO225
2.220 2.25 .410 1.430 0.195 10-24
77
10-24
36
   *Information Displayed in Imperial Measurement
    
Part No.
Thru Bore
B1 Bore B2 Bore Static Torque Torsional Stiffness Inertia Mass Misalignment
(see definitions)
Inch
+.001
-.000

Notes
1,2,3
MM
+.025
-.000

Notes
1,2,3
Inch
+.001
-.000

Notes
1,2,3
MM
+.025
-.000

Notes
1,2,3


LB.IN

Notes
4,5

MIN /
LB.IN

Note
5

10-3
Ib.in.2

Note
6


Ib.

Note
6
Angular
Offset Degrees
Parallel
Off Set
Inch

Axial
Motion
Inch
BTOOO037
    0.031 1         1.5° 0.002 ±.002
    0.062 2        
    0.093 2.5        
0.120 3 0.120 3 5.2 68.0 0.086 0.004
0.125 3 0.125 3 5.1 68.0 0.086 0.004
0.156 4 0.156 4 4.6 53.2 0.084 0.004
BTOOO050
    0.031 1         0.003 ±.003
    0.062 2        
    0.093 2.5        
0.120 3 0.120 3 8.5 23.75 0.310 0.009
0.125 3 0.125 3 6.8 23.75 0.310 0.009
0.156 4 0.156 4 5.4 30.00 0.308 0.009
0.187 5 0.187 5 4.6 57.60 0.305 0.008
BTOOO062
    0.062 2         0.005 ±.005
    0.093 2.5        
    0.120 3        
    0.125 3        
0.125 4 0.156 4 14.4 19.20 0.832 0.016
0.156 5 0.187 5 13.8 21.14 0.828 0.015
0.187 6 0.250 6 11.1 29.76 0.815 0.014
BTOOO075
    0.062 2         0.008 ±.005
    0.120 3        
    0.125 3        
    0.156 4        
0.187 5 0.187 5 24 8.64 2.483 0.032
0.250 6 0.250 6 20 10.56 2.463 0.031
0.312 8 0.312 8 16 12.16 2.422 0.029
BTOOO100
    0.120 3         0.010 ±.010
    0.125 3        
    0.156 4        
    0.187 5        
0.250 6 0.250 6 55 4.00 9.020 0.067
0.312 8 0.312 8 49 4.48 8.976 0.065
0.375 10 0.375 10 42 5.60 8.888 0.062
Part No.
Thru Bore
B1 Bore B2 Bore Static Torque Torsional Stiffness Inertia Mass Misalignment
(see definitions)
Inch
+.001
-.000

Notes
1,2,3
MM
+.025
-.000

Notes
1,2,3
Inch
+.001
-.000

Notes
1,2,3
MM
+.025
-.000

Notes
1,2,3


LB.IN

Notes
4,5

MIN /
LB.IN

Note
5

10-3
Ib.in.2

Note
6


Ib.

Note
6
Angular
Offset Degrees
Parallel
Off Set
Inch

Axial
Motion
Inch
BTOOO125
    0.187 5         0.010 ±.012
0.250 6 0.250 6 120 1.51 26.33 0.127
0.312 8 0.312 8 112 1.79 26.29 0.125
0.375 10 0.375 10 103 2.09 26.18 0.122
0.437 12 0.437 12 96 2.32 26.00 0.119
0.500 14 0.500 14 84 2.91 25.71 0.114
BTOOO150
    0.250 6         0.010 ±.012
    0.312 8        
0.375 10 0.375 10 162 1.27 66.03 0.218
0.437 12 0.437 12 149 1.48 65.83 0.214
0.500 14 0.500 14 134 1.86 65.51 0.209
0.625 16 0.625 16 121 2.23 64.79 0.201
0.687 18 0.687 18 108 3.40 64.04 0.195
BTOOO162
    0.312 8         0.015 ±.015
    0.375 10        
0.437 12 0.437 12 180 1.11 97.83 0.273
0.500 14 0.500 14 175 1.35 97.43 0.267
0.625 16 0.625 16 161 1.56 96.59 0.258
0.687 18 0.687 18 152 1.98 95.65 0.250
0.750 20 0.750 20 133 2.56 94.37 0.242
BTOOO175
    0.375 10         0.015 ±.015
    0.437 12        
0.500 14 0.500 14 266 0.84 142.7 0.338
0.625 16 0.625 16 230 0.93 141.8 0.328
0.687 18 0.687 18 221 1.22 140.8 0.319
0.750 20 0.750 20 214 1.35 139.3 0.310
0.875 22 0.875 22 201 1.65 136.6 0.295
BTOOO200
    0.375 10         0.020 ±.020
    0.437 12        
0.500 14 0.500 14 395 0.74 284.9 0.526
0.625 16 0.625 16 380 0.80 283.4 0.510
0.687 18 0.687 18 354 0.92 282.0 0.499
0.750 20 0.750 20 328 0.97 280.1 0.487
0.875 22 0.875 22 305 1.15 276.6 0.468
BTOOO225
    0.437 12         0.020 ±.020
    0.500 14        
0.625 16 0.625 16 430 0.45 501.7 0.712
0.687 18 0.687 18 421 0.49 497.9 0.690
0.750 20 0.750 20 390 0.54 492.2 0.666
0.875 22 0.875 22 357 0.62 479.2 0.624
1.000 24-25 1.000 24-25 332 0.75 470.2 0.598
   *Information Displayed in Imperial Measurement
  1. All THRU BORE couplings have an inside relief so the shafts will not touch the beams at the maximum misalignment. All bores shown are thru bores.
  2. All LIMITED BORE couplings have the same OD have the same ID. The torque, stiffness and inertia are the same for all bores. When the bores are in blue, the maximum shaft penetration is E depth. When one bore is in white it can extend into the flexible area. Torque and wind-up is shown in blue.
  3. Any B1 may be combined with any B2. The smallest B2 bores cannot be duplicated in the B1 column where they are not already shown.
  4. Static torque is the maximum torque rating for each B1 bore. The correct dynamic torque safety factor should be determined by the customer in accordance with fast reversals acceleration, deceleration, sudden stops, etc.
  5. Torque and torsional stiffness ratings are at maximum misalignment, not in a straight line.
  6. Mass and inertia are calculated with the customers required B1 bore and the smallest B2 bore shown.
  7. Set screws are 120° apart. All screws are hex socket steel with black oxide finish. The torques are the screw manufacturers maximum ratings.
  8. Coupling material is 2024-T3.51 QQA225/6 aluminum with MIL A8625F Type II black anodize.
  9. Nickel plated couplings for added corrosion resistance are available for all Rocom couplings.
  10. G10 phenolic inserts for thermal and electrical isolation are available for all Rocom couplings.
  11. Clamps are an integral part of the coupling.
  12. Follow the installation procedures to ensure infinite life.
  13. TEST BEFORE YOU BUY. Rocom will furnish samples at no charge for all new OEM designs or for comparative evaluation.
    
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5957 Engineer Drive, Huntington Beach, California 92649 (714) 891-9922 or (800) 952-FLEX Fax (714) 891-2121 Email: Our Sales Department