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 setscrews. 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. Lovejoy® Coupling, Type U Shaft to Shaft, Series: Uniflex, 12 mm, 1/2 in Bore, 1.42 in OD, 3.31 in Overall Length, Regular Hub, 1.42 in Dia Hub, 0.84 in Length Through Bore, 175 in-lb Torque, 20000 RPM Maximum, 1.42 in Dia Shaft Connection, -40 to 250 °F, Steel, Metallic