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  • U Type Uniflex Couplings w/ Keyway, Regular Version, Shaft-to-Shaft Configuration - Imperial
  • U Type Uniflex Couplings w/ Keyway, Regular Version, Shaft-to-Shaft Configuration - Imperial-2
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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Bore Size    (in)

Keyway Size  (in)

Part Number

Description 

Bore Size   

Keyway Size 

Dimension HD

Overall Length

Max. Torque

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N/A U50R CPLG 1/2X1/2 1/8X1/16KW N/A 1/2 x 1/2 in N/A 1/8 x 1/16 in N/A 1.040 in26.42 mm N/A 2.500 in63.50 mm N/A 82 in·lb
N/A U62R CPLG 5/8X5/8 3/16X3/32K N/A 5/8 x 5/8 in N/A 3/16 x 3/32 in N/A 1.420 in36.07 mm N/A 2.720 in69.09 mm N/A 126.00 in·lb
N/A U62R CPLG 1/2X5/8 W/KW BE N/A 1/2 x 5/8 in N/A 1/8 x 1/16 & 3/16 x 3/32 in N/A 1.420 in36.07 mm N/A 2.720 in69.09 mm N/A 126.00 in·lb
N/A U75R CPLG 3/4X3/4 3/16X3/32K N/A 3/4 x 3/4 in N/A 3/16 x 3/32 in N/A 1.420 in36.07 mm N/A 3.310 in84.07 mm N/A 175 in·lb
N/A U75R CPLG 5/8X5/8 3/16KW BE N/A 5/8 x 5/8 in N/A 3/16 x 3/32 in N/A 1.420 in36.07 mm N/A 3.310 in84.07 mm N/A 175 in·lb
N/A U75R CPLG 5/8X3/4 3/16KW BE N/A 5/8 x 3/4 in N/A 3/16 x 3/32 in N/A 1.420 in36.07 mm N/A 3.310 in84.07 mm N/A 175 in·lb
N/A U87R CPLG 7/8X7/8 3/16X3/32K N/A 7/8 x 7/8 in N/A 3/16 x 3/32 in N/A 1.730 in43.94 mm N/A 3.50 in88.90 mm N/A 346 in·lb
N/A U87R CPLG 3/4X3/4 3/16KW BE N/A 3/4 x 3/4 in N/A 3/16 x 3/32 in N/A 1.730 in43.94 mm N/A 3.50 in88.90 mm N/A 346 in·lb
N/A U87R CPLG 3/4X7/8 3/16KW BE N/A 3/4 x 7/8 in N/A 3/16 x 3/32 in N/A 1.730 in43.94 mm N/A 3.50 in88.90 mm N/A 346 in·lb
N/A U87R CPLG 3/4 KWX3/4 *1/4KW N/A 3/4 x 3/4 in N/A 3/16 x 3/32 & 1/4 x 1/8 in N/A 1.730 in43.94 mm N/A 3.50 in88.90 mm N/A 346 in·lb
N/A U100R CPLG 1"X1" 1/4X1/8KW N/A 1 x 1 in N/A 1/4 x 1/8 in N/A 2.11 in53.59 mm N/A 4.120 in104.65 mm N/A 565 in·lb
N/A U100R CPLG 3/4X3/4 3/16KW BE N/A 3/4 x 3/4 in N/A 3/16 x 3/32 in N/A 2.11 in53.59 mm N/A 4.120 in104.65 mm N/A 565 in·lb
N/A U100R CPLG 3/4X1" KW BE N/A 3/4 x 1 in N/A 3/16 x 3/32 & 1/4 x 1/8 in N/A 2.11 in53.59 mm N/A 4.120 in104.65 mm N/A 565 in·lb
N/A U100R CPLG 5/8X1" STD KW BE N/A 5/8 x 1 in N/A 3/16 x 3/32 & 1/4 x 1/8 in N/A 2.11 in53.59 mm N/A 4.120 in104.65 mm N/A 565 in·lb
N/A U100R CPLG 5/8X15/16 STD KWBE N/A 5/8 x 15/16 in N/A 3/16 x 3/32 & 1/4 x 1/8 in N/A 2.11 in53.59 mm N/A 4.120 in104.65 mm N/A 565 in·lb
N/A U125R CPLG 1-1/4X1-1/4 1/4KW N/A 1 1/4 x 1 1/4 in N/A 1/4 x 1/8 in N/A 2.170 in55.12 mm N/A 4.880 in123.95 mm N/A 755 in·lb
N/A U125R CPLG 3/4X3/4 3/16KWBE N/A 3/4 x 3/4 in N/A 3/16 x 3/32 in N/A 2.170 in55.12 mm N/A 4.880 in123.95 mm N/A 755 in·lb
N/A U137R CPLG 1-3/8X1-3/8 5/16KW N/A 1 3/8 x 1 3/8 in N/A 5/16 x 5/32 in N/A 2.54 in64.52 mm N/A 5.250 in133.35 mm N/A 1260 in·lb
N/A U137R 5/8 KW*SSX1-1/2NKW NSS N/A 5/8 x 1 1/2 in N/A No Keyway & 3/16 x 3/32 in N/A 2.54 in64.52 mm N/A 5.250 in133.35 mm N/A 1260 in·lb
N/A U150R CPLG 1-1/2X1-1/2 3/8KW N/A 1 1/2 x 1 1/2 in N/A 3/8 x 3/16 in N/A 2.980 in75.69 mm N/A 6.280 in159.51 mm N/A 1890 in·lb
N/A U150R CPLG 1-3/8X1-7/16 KWBE N/A 1 3/8 x 1 7/16 in N/A 5/16 x 5/32 & 3/8 x 3/16 in N/A 2.980 in75.69 mm N/A 6.280 in159.51 mm N/A 1890 in·lb
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