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 Beam flexible coupling is formed from one piece of aluminum rod. A spiral slot is cut through the length of the aluminum tube forming a “spring” center section referred to as a helical coil or beam. The flexure allowed by the beam portion of the coupling is capable of accommodating angular, parallel and axial misalignment while continuing to convey power between the attached shafts. This results in a single piece, true flexible coupling.

    The Miniature Beam coupling is designed for very light power transmission applications where accurate positioning of shafts is an essential requirement. It also has a very high tolerance to heat, chemicals, and corrosion that would be harmful to conventional elastomeric flexible couplings.

    The Miniature Beam coupling design is very well suited for small shaft applications and the inherent requirements of start/stop/reverse applications where zero backlash and extreme positioning accuracy are important. This coupling operates either clockwise or counter clockwise without sacrificing windup or torque capabilities.
ES Series - Single Beam Set Screw Style Couplings - Imperial
ES Series - Single Beam Set Screw Style Couplings - Imperial-2
Unit of Measure
Items ES Series - Single Beam Set Screw Style Couplings - Imperial
68514456666
ES Series - Single Beam Set Screw Style Couplings - Metric Bores 		ES Series - Single Beam Set Screw Style Couplings - Imperial
68514456670
ES Series - Single Beam Set Screw Style Couplings - Metric Bores 		ES Series - Single Beam Set Screw Style Couplings - Imperial
68514456672
ES Series - Single Beam Set Screw Style Couplings - Metric Bores 		ES Series - Single Beam Set Screw Style Couplings - Imperial
68514456674
ES Series - Single Beam Set Screw Style Couplings - Metric Bores 		ES Series - Single Beam Set Screw Style Couplings - Imperial
68514456682
ES Series - Single Beam Set Screw Style Couplings - Metric Bores
Description  N/A ES050-BEAM CP-3MMX3MM N/A ES075-BEAM CP-4MMX4MM N/A ES075-BEAM CP-5MMX5MM N/A ES075-BEAM CP-6MMX6MM N/A ES100-BEAM CP-6MMX6MM
Bore A N/A 0.118 in3.00 mm N/A 0.157 in4.00 mm N/A 0.197 in5.00 mm N/A 0.236 in6.00 mm N/A 0.236 in6.00 mm
Bore B N/A 0.118 in3.00 mm N/A 0.157 in4.00 mm N/A 0.197 in5.00 mm N/A 0.236 in6.00 mm N/A 0.236 in6.00 mm
Coupling Size N/A ES050 N/A ES075 N/A ES075 N/A ES075 N/A ES100
Overall Length N/A 0.512 in13.00 mm N/A 0.748 in19.00 mm N/A 0.748 in19.00 mm N/A 0.748 in19.00 mm N/A 0.984 in25.00 mm
Type N/A Single Beam Coupling
Keyway Size N/A No Keyway
Outside Diameter N/A 0.512 in13.00 mm N/A 0.748 in19.00 mm N/A 0.748 in19.00 mm N/A 0.748 in19.00 mm N/A 0.984 in25.00 mm
Min. Bore (Dimensions ID1/ID2) N/A 0.118 in3.00 mm N/A 0.157 in4.00 mm N/A 0.157 in4.00 mm N/A 0.157 in4.00 mm N/A 0.236 in6 mm
Max. Bore (Dimensions ID1/ID2) N/A 0.188 in4.77 mm N/A 0.236 in6.00 mm N/A 0.236 in6.00 mm N/A 0.236 in6.00 mm N/A 0.394 in10.00 mm
Length thru Bore N/A 0.118 in3.00 mm N/A 0.197 in5.00 mm N/A 0.197 in5.00 mm N/A 0.197 in5.00 mm N/A 0.276 in7.00 mm
Material N/A Anodized Aluminum
Style N/A Set Screw
Finish N/A Anodized Aluminum
Set Screw Size N/A M2.5 N/A M4 N/A M4 N/A M4 N/A M5
Weight N/A 0.01 oz N/A 0.03 oz N/A 0.03 oz N/A 0.03 oz N/A 0.07 oz
Weight (Complete Coupling w/ Min. Bores) N/A 0.10 oz3.60 g N/A 0.40 oz12.00 g N/A 0.40 oz12.00 g N/A 0.40 oz12.00 g N/A 1.10 oz30.00 g
Max. Operating Temperature N/A 200.00 ºF
Max. Speed N/A 10000 rpm
Nominal Torque N/A 1.80 in·lb N/A 5.00 in·lb N/A 5.00 in·lb N/A 5.00 in·lb N/A 11.00 in·lb
Max. Angular Misalignment N/A 5.00 º
Axial Misalignment N/A ± 0.010 in
Parallel Misalignment N/A 0.005 in
Moment of Inertia N/A 2.7300 lb·in² N/A 20.1600 lb·in² N/A 20.1600 lb·in² N/A 20.1600 lb·in² N/A 86.8000 lb·in²
Torsional Stiffness N/A 42.80 in·lb/rad N/A 119.40 in·lb/rad N/A 119.40 in·lb/rad N/A 119.40 in·lb/rad N/A 286.50 in·lb/rad
Cubic inches N/A 0.13422 in³ N/A 0.41851 in³ N/A 0.41851 in³ N/A 0.41851 in³ N/A 0.95276 in³