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.
BWC Series - Bellows Clamp Style Couplings - Metric
BWC Series - Bellows Clamp Style Couplings - Metric-2
Unit of Measure
1 

Part Number

Description 

Bore A

Bore B

Coupling Size

Overall Length

Keyway Size

Outside Diameter

Nominal Torque

68514476989 N/A BWC21-CP-1/4X1/4 N/A 0.250 in N/A 0.250 in N/A BWC21 N/A 0.827 in21.000 mm N/A No Keyway N/A 0.591 in15.00 mm N/A 3.54 in·lb
68514476940 N/A BWC21-CP-3/16X3/16 N/A 0.188 in N/A 0.188 in N/A BWC21 N/A 0.827 in21.000 mm N/A No Keyway N/A 0.591 in15.00 mm N/A 3.54 in·lb
68514476992 N/A BWC23-CP-1/4X1/4 N/A 0.250 in N/A 0.250 in N/A BWC23 N/A 0.906 in23.000 mm N/A No Keyway N/A 0.591 in15.00 mm N/A 7.97 in·lb
68514476941 N/A BWC23-CP-3/16X3/16 N/A 0.188 in N/A 0.188 in N/A BWC23 N/A 0.906 in23.000 mm N/A No Keyway N/A 0.591 in15.00 mm N/A 7.97 in·lb
68514476944 N/A BWC26-CP-1/4X1/4 N/A 0.250 in N/A 0.250 in N/A BWC26 N/A 1.024 in26.000 mm N/A No Keyway N/A 0.748 in19.00 mm N/A 13.28 in·lb
68514476943 N/A BWC26-CP-3/16X1/4 N/A 0.188 in N/A 0.250 in N/A BWC26 N/A 1.024 in26.000 mm N/A No Keyway N/A 0.748 in19.00 mm N/A 13.28 in·lb
68514476942 N/A BWC26-CP-3/16X3/16 N/A 0.188 in N/A 0.188 in N/A BWC26 N/A 1.024 in26.000 mm N/A No Keyway N/A 0.748 in19.00 mm N/A 13.28 in·lb
68514476945 N/A BWC32-CP-1/4X1/4 N/A 0.250 in N/A 0.250 in N/A BWC32 N/A 1.260 in32.00 mm N/A No Keyway N/A 0.945 in24.00 mm N/A 17.70 in·lb
68514476947 N/A BWC32-CP-1/4X3/8 N/A 0.250 in N/A 0.375 in N/A BWC32 N/A 1.260 in32.00 mm N/A No Keyway N/A 0.945 in24.00 mm N/A 17.70 in·lb
68514476949 N/A BWC32-CP-3/8X1/2 N/A 0.375 in N/A 0.500 in N/A BWC32 N/A 1.260 in32.00 mm N/A No Keyway N/A 0.945 in24.00 mm N/A 17.70 in·lb
68514476948 N/A BWC32-CP-3/8X3/8 N/A 0.375 in N/A 0.375 in N/A BWC32 N/A 1.260 in32.00 mm N/A No Keyway N/A 0.945 in24.00 mm N/A 17.70 in·lb
68514476946 N/A BWC32-CP-5/16X5/16 N/A 0.313 in N/A 0.313 in N/A BWC32 N/A 1.260 in32.00 mm N/A No Keyway N/A 0.945 in24.00 mm N/A 17.70 in·lb
68514476950 N/A BWC41-CP-1/2X1/2 N/A 0.500 in N/A 0.500 in N/A BWC41 N/A 1.614 in41.000 mm N/A No Keyway N/A 1.260 in32.00 mm N/A 39.83 in·lb
68514476951 N/A BWC41-CP-1/2X5/8 N/A 0.500 in N/A 0.625 in N/A BWC41 N/A 1.614 in41.000 mm N/A No Keyway N/A 1.260 in32.00 mm N/A 39.83 in·lb
68514476958 N/A BWC41-CP-1/4X1/4 N/A 0.250 in N/A 0.250 in N/A BWC41 N/A 1.614 in41.000 mm N/A No Keyway N/A 1.260 in32.00 mm N/A 39.83 in·lb
68514476956 N/A BWC41-CP-3/8X1/2 N/A 0.375 in N/A 0.500 in N/A BWC41 N/A 1.614 in41.000 mm N/A No Keyway N/A 1.260 in32.00 mm N/A 39.83 in·lb
68514476957 N/A BWC41-CP-5/16X5/16 N/A 0.313 in N/A 0.313 in N/A BWC41 N/A 1.614 in41.000 mm N/A No Keyway N/A 1.260 in32.00 mm N/A 39.83 in·lb
68514476952 N/A BWC41-CP-5/8X5/8 N/A 0.625 in N/A 0.625 in N/A BWC41 N/A 1.614 in41.000 mm N/A No Keyway N/A 1.260 in32.00 mm N/A 39.83 in·lb
68514477001 N/A BWC47-CP-1/2X1/2 N/A 0.500 in N/A 0.500 in N/A BWC47 N/A 1.850 in47.000 mm N/A No Keyway N/A 1.575 in40.00 mm N/A 88.50 in·lb
68514477002 N/A BWC47-CP-1/2X5/8 N/A 0.500 in N/A 0.625 in N/A BWC47 N/A 1.850 in47.000 mm N/A No Keyway N/A 1.575 in40.00 mm N/A 88.50 in·lb
68514477003 N/A BWC47-CP-5/8X5/8 N/A 0.625 in N/A 0.625 in N/A BWC47 N/A 1.850 in47.000 mm N/A No Keyway N/A 1.575 in40.00 mm N/A 88.50 in·lb
Unit of Measure
1