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Bellows Couplings Shaft Collar in Shell
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BS - Set Screw Bellows Coupling
Ruland Set Screw Bellows Coupling

Features

  • High torque
  • Balanced for high RPM
  • Low Inertia
  • No maintenance
  • High torsional stiffness
  • Constant velocity
  • Long life
  • Zero backlash
  • Maximum speed: 10,000 RPM
  • Temperature Range: -40°F to 200°F



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How to Order

Choose any Bore 1 and any Bore 2 available in a body size. Part numbers are in the following format with numbers representing sixteenths of an inch:

order bc
Clamp Style Bellows Couplings
Set Screw Bellows Couplings
  Click part number for 3D CAD file
Part
Number		 Bore 1
(in)		 Bore 2
(in)		 OD
(in)		 Length
L (in)		 Set
Screw		 Hub
Width
L1 (in)		 Static
Torque
(lb-in)		 Torsional
Stiffness
(lb-in/Deg)		 MISALIGNMENT
Angular (Deg) Parallel (in) Axial Motion (in)
BS10 2 (.1250) 2 (.1250) .590 1.0720 M3 .340 22 72
1.50 .004 .008
3 (.1875) 3 (.1875)
4 (.2500) 4 (.2500)
BS12 3 (.1875) 3 (.1875) .750 1.1875 M3 .410 40 120
1.50 .004 .010
4 (.2500) 4 (.2500)
5 (.3125) 5 (.3125)
BS16 4 (.2500) 4 (.2500) 1.000 1.3125 M4 .467 60 244
1.50 .004 .012
5 (.3125) 5 (.3125)
6 (.3750) 6 (.3750)
8 (.5000) 8 (.5000)
BS21 5 (.3125) 5 (.3125) 1.313 1.5625 M4 .590 120 400
1.50 .006 .016
6 (.3750) 6 (.3750)
8 (.5000) 8 (.5000)
10 (.6250) 10 (.6250)
BS26 6 (.3750) 6 (.3750) 1.625 2.0000 M5 .710 250 550
2.00 .010 .020
8 (.5000) 8 (.5000)
10 (.6250) 10 (.6250)
12 (.7500) 12 (.7500)
BS32 8 (.5000) 8 (.5000) 2.000 2.3125 M6 .810 400 950
2.00 .010 .020
10 (.6250) 10 (.6250)
12 (.7500) 12 (.7500)
14 (.8750) 14 (.8750)
16 (1.0000) 16 (1.0000)


Note 1 Static torque ratings are at maximum misalignment. To obtain dynamic rating, static ratings should be divided by 2 for non-reversing applications and by 4 for reversing applications.
Note 2 Hardware is alloy steel with black oxide finish. Parts BS10 and BS12 have one set screw on each end. BS16, BS21, BS26 and BS32 have two set screws 90° apart.
Note 3 Performance ratings are for guidance only. The user must determine suitability for a particular application.
Note 4 Couplings supplied with black anodized aluminum hubs. Stainless steel hubs available upon request.

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