The Timken Company - U Type with Keyway, Regular Version - Inch (Imperial) Bores

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.

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

Unit of Measure

Items	68514426097 U Type with Keyway, Regular Version - Inch (Imperial) Bores	68514413255 U Type with Keyway, Regular Version - Inch (Imperial) Bores	68514444307 U Type with Keyway, Regular Version - Inch (Imperial) Bores	68514413351 U Type with Keyway, Regular Version - Inch (Imperial) Bores	68514426099 U Type with Keyway, Regular Version - Inch (Imperial) Bores
Description	N/A U50R-CP-1/2X1/2	N/A U62R-CP-5/8X5/8	N/A U62R-CP-1/2X5/8	N/A U75R-CP-3/4X3/4	N/A U75R-CP-5/8X5/8
Bore Size	N/A 1/2 x 1/2 in	N/A 5/8 x 5/8 in	N/A 1/2 x 5/8 in	N/A 3/4 x 3/4 in	N/A 5/8 x 5/8 in
Hub Style	N/A Regular
Type	N/A Shaft-to-Shaft
Hub Size	N/A U50R	N/A U62R	N/A U62R	N/A U75R	N/A U75R
Material	N/A Steel
Set Screw Thread Size (Dimension T)	N/A 1/4-20
Keyway Size (W x D)	N/A 1/8 x 1/16 in	N/A 3/16 x 3/32 in	N/A 1/8 x 1/16 & 3/16 x 3/32 in	N/A 3/16 x 3/32 in	N/A 3/16 x 3/32 in
Weight	N/A 0.36 lb	N/A 0.77 lb	N/A 0.77 lb	N/A 0.82 lb	N/A 0.81 lb
Dimension HD	N/A 1.040 in26.42 mm	N/A 1.420 in36.07 mm	N/A 1.420 in36.07 mm	N/A 1.420 in36.07 mm	N/A 1.420 in36.07 mm
Overall Length	N/A 2.500 in63.50 mm	N/A 2.720 in69.09 mm	N/A 2.720 in69.09 mm	N/A 3.310 in84.07 mm	N/A 3.310 in84.07 mm
Pin Location (Dimension SL)	N/A 0.310 in	N/A 0.38 in	N/A 0.38 in	N/A 0.41 in	N/A 0.41 in
Color	N/A Gray/Metallic
Operating Temperature Range	N/A -40 to 250 ºF
Max. Torque	N/A 82 in·lb	N/A 126.00 in·lb	N/A 126.00 in·lb	N/A 175 in·lb	N/A 175 in·lb
Length thru Bore	N/A 0.640 in16.26 mm	N/A 0.840 in21.34 mm	N/A 0.840 in21.34 mm	N/A 0.840 in21.34 mm	N/A 0.840 in21.34 mm
Bore Type	N/A Finished Bore
Min. Bore (Dimensions ID1/ID2)	N/A 0.313 in7.95 mm	N/A 0.313 in7.95 mm	N/A 0.313 in7.95 mm	N/A 0.375 in9.53 mm	N/A 0.375 in9.53 mm
Max. Bore (Dimensions ID1/ID2)	N/A 0.500 in12.70 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm	N/A 0.750 in19.05 mm	N/A 0.750 in19.05 mm
Max. Speed	N/A 30000.00 rpm	N/A 20000.00 rpm	N/A 20000.00 rpm	N/A 20000.00 rpm	N/A 20000.00 rpm
Axial Misalignment (∆ Ka)	N/A 0.035 in0.89 mm	N/A 0.035 in0.89 mm	N/A 0.035 in0.89 mm	N/A 0.040 in1.02 mm	N/A 0.040 in1.02 mm
Max. Parallel Misalignment	N/A 0.021 in0.53 mm	N/A 0.019 in0.48 mm	N/A 0.019 in0.48 mm	N/A 0.028 in0.71 mm	N/A 0.028 in0.71 mm
Wind-Up Angle at Nominal Torque	N/A 1.82 º	N/A 0.85 º	N/A 0.85 º	N/A 1.82 º	N/A 1.82 º
Wind-Up Angle at Max. Torque	N/A 4.5 º	N/A 3.00 º	N/A 3.00 º	N/A 4.5 º	N/A 4.5 º
Rated HP at 100 rpm	N/A 0.13 hp	N/A 0.20 hp	N/A 0.20 hp	N/A 0.28 hp	N/A 0.28 hp
# of Set Screws Required per Hub	N/A 1
Cubic inches	N/A 2.70400 in³	N/A 5.48461 in³	N/A 5.48461 in³	N/A 6.67428 in³	N/A 6.67428 in³