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

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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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Items	68514426098 U Type with Keyway, Short Version - Inch (Imperial) Bores	68514476419 U Type with Keyway, Short Version - Inch (Imperial) Bores	68514447442 U Type with Keyway, Short Version - Inch (Imperial) Bores	68514445477 U Type with Keyway, Short Version - Inch (Imperial) Bores	68514413300 U Type with Keyway, Short Version - Inch (Imperial) Bores
Description	N/A U50S-CP-1/2X1/2	N/A U37S-CP-1/4X3/8-NKW NSS PH RH	N/A U62S-CP-1/2X1/2	N/A U62S-CP-1/2X5/8	N/A U62S-CP-5/8X5/8
Bore Size	N/A 1/2 x 1/2 in	N/A 1/4 x 3/8 in	N/A 1/2 x 1/2 in	N/A 1/2 x 5/8 in	N/A 5/8 x 5/8 in
Hub Style	N/A Short
Type	N/A Shaft-to-Shaft
Hub Size	N/A U50S	N/A U37S	N/A U62S	N/A U62S	N/A U62S
Material	N/A Steel
Set Screw Thread Size (Dimension T)	N/A 1/4-20	N/A 10-24 & Puller Hole	N/A 1/4-20	N/A 1/4-20	N/A 1/4-20
Keyway Size (W x D)	N/A 1/8 x 1/16 in	N/A 1/16 x 1/32 & Puller Hole in	N/A 1/8 x 1/16 in	N/A 1/8 x 1/16 & 3/16 x 3/32 in	N/A 3/16 x 3/32 in
Weight	N/A 0.36 lb	N/A 0.22 lb	N/A 0.61 lb	N/A 0.61 lb	N/A 0.61 lb
Weight (Complete Coupling w/ Max. Bores)	N/A 0.36 lb	N/A	N/A 0.78 lb	N/A 0.78 lb	N/A 0.78 lb
Dimension HD	N/A 1.040 in26.42 mm	N/A 0.860 in21.84 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 1.820 in46.23 mm	N/A 2.060 in52.32 mm	N/A 2.280 in57.91 mm	N/A 2.280 in57.91 mm	N/A 2.280 in57.91 mm
Pin Location (Dimension SL)	N/A 0.310 in	N/A	N/A 0.38 in	N/A 0.38 in	N/A 0.38 in
Color	N/A Gray/Metallic
Operating Temperature Range	N/A -40 to 250 ºF
Max. Torque	N/A 82 in·lb	N/A 39.00 in·lb	N/A 126.00 in·lb	N/A 126.00 in·lb	N/A 126.00 in·lb
Length thru Bore	N/A 0.500 in12.70 mm	N/A 0.520 in13.21 mm	N/A 0.620 in15.75 mm	N/A 0.620 in15.75 mm	N/A 0.620 in15.75 mm
Bore Type	N/A Finished Bore
Min. Bore (Dimensions ID1/ID2)	N/A 0.313 in8.00 mm	N/A 0.250 in6.35 mm	N/A 0.313 in8.00 mm	N/A 0.313 in8.00 mm	N/A 0.313 in8.00 mm
Max. Bore (Dimensions ID1/ID2)	N/A 0.500 in12.70 mm	N/A 0.375 in9.53 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm
Max. Speed	N/A 30000.00 rpm	N/A 30000.00 rpm	N/A 20000.00 rpm	N/A 20000.00 rpm	N/A 20000.00 rpm
Axial Misalignment (∆ Ka)	N/A 0.010 in0.25 mm	N/A 0.020 in0.51 mm	N/A 0.020 in0.51 mm	N/A 0.020 in0.51 mm	N/A 0.020 in0.51 mm
Max. Parallel Misalignment	N/A 0.014 in0.36 mm	N/A 0.014 in0.36 mm	N/A 0.019 in0.48 mm	N/A 0.019 in0.48 mm	N/A 0.019 in0.48 mm
Wind-Up Angle at Nominal Torque	N/A 1.05 º	N/A 1.78 º	N/A 0.85 º	N/A 0.85 º	N/A 0.85 º
Wind-Up Angle at Max. Torque	N/A 3.00 º	N/A 4.5 º	N/A 3.00 º	N/A 3.00 º	N/A 3.00 º
Rated HP at 100 rpm	N/A 0.13 hp	N/A 0.06 hp	N/A 0.20 hp	N/A 0.20 hp	N/A 0.20 hp
# of Set Screws Required per Hub	N/A 1
Cubic inches	N/A 1.96851 in³	N/A 1.52358 in³	N/A 4.59739 in³	N/A 4.59739 in³	N/A 4.59739 in³