Lovejoy Size D8B Universal Joint 3/4 Round Bore And 3/4 Round Bore 3/16 X 3/3

This universal joint compensates for angular misalignments and has a single joint configuration for high torsional stiffness and torque capacity. The hubs, center block, and pins are made of steel for strength and durability, and the bored hubs fit onto shafts without the need for machining. Operating temperatures range from -30 to 212 degrees F. For optimal wear and extended life, boots (sold separately) are recommended, and boot retaining grooves are standard on this design. Universal joints (also called U-joints, universal couplings, Cardan joints, Hooke’s joints, or Hardy-Spicer joints) are used to transmit motion and rotational power, or torque, between two shafts that are offset at an angle. Most universal joints consist of two yokes and a middle assembly; the hub end of each yoke attaches to a shaft while the yoke ears attach to and pivot around the middle assembly to accommodate shaft misalignment. The type of middle assembly determines its usage—pin and block joints are suitable for transmitting high torque, needle bearing joints are used to handle high rotational speeds, and ball and socket joints are used in applications requiring low backlash (play between moving parts). The company, founded in 1900, is headquartered in Downers Grove, IL. Single pin and block universal joint for applications with up to 25 degrees angular misalignment and speeds up to 1,750 RPM Steel for strength and durability Bored hubs fit onto shafts without the need for machining Operating temperatures range from -30 to 212 degrees F