U Type Shaft-to-Shaft
    The U Type is the basis for all Uniflex couplings. It is a shaft-to-shaft flexible coupling with a simple one piece design, making it ideal for indexing, robotic or positioning applications. The U Type consists of a triple-wound flexible steel spring brazed to a steel hub at each end. This all steel design ensures optimum equipment protection in severe environments and/or high temperature applications. Regular and short versions are available for most sizes to accommodate different overall length requirements. Special hub or bore modifications are also possible. These units can be supplied with either pin holes or with keyways and set screws. Lovejoy does not recommend the reboring of uniflex couplings by customers due to potential damage to the brazed joint.
    This is a durable one-piece flexible coupling for general purpose shaft-to- shaft applications. It is the basis for all Uniflex coupling types.
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Item #

Description 

Bore Size   

Keyway Size

Dimension HD

Overall Length

Max. Torque

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N/A U50S CPLG 1/2X1/2 N/KW W/SS N/A 1/2 x 1/2 in N/A No Keyway N/A 1.040 in26.42 mm N/A 1.820 in46.23 mm N/A 82 in·lb
N/A U25S CPLG 1/4X1/4 N/KW BE N/A 1/4 x 1/4 in N/A No Keyway N/A 0.730 in18.54 mm N/A 1 in25.4 mm N/A 34.00 in·lb
N/A U37S CPLG 1/4X3/8 N/KW BE N/A 1/4 x 3/8 in N/A No Keyway N/A 0.860 in21.84 mm N/A 1.650 in41.91 mm N/A 39.00 in·lb
N/A U25S CPLG 3/16X3/16 N/KW BE N/A 3/16 x 3/16 in N/A No Keyway N/A 0.730 in18.54 mm N/A 1 in25.4 mm N/A 34.00 in·lb
N/A U50S CPLG 3/8X1/2 N/KW BE N/A 3/8 x 1/2 in N/A No Keyway N/A 1.040 in26.42 mm N/A 1.820 in46.23 mm N/A 82 in·lb
N/A U50S CPLG 3/8X3/8 N/KW BE N/A 3/8 x 3/8 in N/A No Keyway N/A 1.040 in26.42 mm N/A 1.820 in46.23 mm N/A 82 in·lb
N/A U37S CPLG 3/8X3/8 N/KW W/SS N/A 3/8 x 3/8 in N/A No Keyway N/A 0.860 in21.84 mm N/A 1.650 in41.91 mm N/A 39.00 in·lb
N/A U75S CPLG 3/8X3/8 N/KW W/SS N/A 3/8 x 3/8 in N/A No Keyway N/A 1.420 in36.07 mm N/A 2.720 in69.09 mm N/A 175 in·lb
N/A U25S CPLG 5/16X5/16 N/KW BE N/A 5/16 x 5/16 in N/A No Keyway N/A 0.730 in18.54 mm N/A 1 in25.4 mm N/A 34.00 in·lb
N/A U50S CPLG 5/16X5/16 N/KW BE N/A 5/16 x 5/16 in N/A No Keyway N/A 1.040 in26.42 mm N/A 1.820 in46.23 mm N/A 82 in·lb
N/A U62S CPLG 5/16X5/16 N/KW BE N/A 5/16 x 5/16 in N/A No Keyway N/A 1.420 in36.07 mm N/A 2.280 in57.91 mm N/A 126.00 in·lb
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