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  • BRAND:
  • SKU: 1796294
  • MODEL: 68514444217

U50R CPLG 3/8X3/8 N/KW W/SS

$166.92 Each


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  • Typically ships in: 1 day
  • Weight: 0.4 lb

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Additional Description

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.
Description U50R CPLG 3/8X3/8 N/KW W/SS
Hub StyleRegular
Weight0.41 lb
Bore TypeFinished Bore
Dimensional Data
Bore Size   3/8 x 3/8 in
Hub SizeU50R
Set Screw Thread Size (Dimension T)1/4-20
Keyway Size (W x D)No Keyway
Dimension HD1.040 in26.42 mm
Overall Length2.500 in63.50 mm
Pin Location (Dimension SL)0.310 in
Length thru Bore0.640 in16.26 mm
Min. Bore (Dimensions ID1/ID2)0.313 in8.00 mm
Max. Bore (Dimensions ID1/ID2)0.500 in12.70 mm
Cubic inches2.70400 in³
Performance Data
Operating Temperature Range-40 to 250 ºF
Max. Torque82 in·lb
Max. Speed30000.00 rpm
Axial Misalignment (∆ Ka)0.035 in0.89 mm
Max. Parallel Misalignment0.021 in0.53 mm
Wind-Up Angle at Nominal Torque1.82 º
Wind-Up Angle at Max. Torque4.5 º
Rated HP at 100 rpm0.13 hp
# of Set Screws Required per Hub1
Coupling Design
    The Uniflex Coupling is an all steel, single piece coupling that solves a variety of application concerns including: high misalignment, space limitations, high temperature, and exceptionally low backlash/windup. The unique flexing center of the Uniflex consists of three opposingly wound square wire springs for forward or reverse operation. Two steel hubs are then brazed to the steel spring pack to create a durable one-piece flexible coupling.
  • Total backlash is approximately 1/3 of windup at maximum torque – consult Lovejoy Engineering for more information.
  • OAL Tolerance: + 1/8 inch.

Return policy

Item must be unused.

Item must be in it's original package.

Restocking, shipping and handling fees may applied to any return with this manufacturer.

For more information please consult


Product's availability

State of California Proposition 65 Product Warning