The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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    The BWC (Bellows Clamp) Series coupling provides a new range of coupling options with the high torsional stiffness. The higher torsional stiffness provides the benefit of accuracy and repeatability in motion control applications. The BWC series coupling features aluminum hubs and corrosion resistant steel bellow.

    The compact design also offers the benefit of low inertia. The BWC Series also has a torque capacity of up to 89 in-lbs, with a maximum bore capacity of .748 inches in diameter. The BWC utilizes clamping style hubs that provide easy installation and removal of the coupling. The bellows design also offers up to .016 inches of axial misalignment, with low reactionary loading on bearings.
Unit of Measure

Specifications

Description 

 N/A BWC21-CP-3MMX3MM

Coupling Size

 N/A BWC21

Type

 N/A Standard Bellows Coupling

Bellows Material

 N/A Stainless Steel

Hub Material

 N/A Aluminum

Style

 N/A Clamp

Application

 N/A Motion Control

Weight

 N/A 0.02 oz

Weight (Complete Coupling w/ Min. Bores)

 N/A 0.30 oz9.00 g

Dimensional Data

Bore A

 N/A 3.00 mm

Bore B

 N/A 3.00 mm

Overall Length

 N/A 0.827 in21.000 mm

Keyway Size

 N/A No Keyway

Outside Diameter

 N/A 0.591 in15.00 mm

Min. Bore (Dimensions ID1/ID2)

 N/A 0.118 in3.00 mm

Max. Bore (Dimensions ID1/ID2)

 N/A 0.256 in6.50 mm

Length thru Bore

 N/A 0.276 in7.00 mm

Clamp Screw Size

 N/A M2

Cubic inches

 N/A 0.28886 in³

Performance Data

Max. Operating Temperature

 N/A 212.00 ºF

Max. Speed

 N/A 15000 rpm

Nominal Torque

 N/A 3.54 in·lb

Angular Misalignment

 N/A 1.20 º

Axial Misalignment

 N/A 0.0090 in

Parallel Misalignment

 N/A 0.004 in

Moment of Inertia

 N/A 0.0090 lb·in²

Torsional Stiffness

 N/A 2248.00 in·lb/rad

Features

Features 

 N/A
  • High torsional stiffness
  • Low reactionary loading
  • No maintenance required
  • Low inertia

Notes

Notes 

 N/A
  • Nominal torque, torsional stiffness, weight and moment of inertia are based on minimum bore size.