Lovejoy 68514417164 Dd-type Double Universal Joint

Product Description

The LOVEJOY 68514417164 is a DD-type double universal joint designed to transmit rotational motion between shafts that are misaligned or require angular flexibility. This joint delivers a torque capacity of 10,680 in/lb, making it suitable for demanding mechanical drive applications where a single universal joint would introduce unacceptable velocity variation. The bore depth measures 1-3/8 inches, the boot inside diameter is 0.875 inches, and the boot outside diameter is 1.75 inches. Overall assembly length is 10 inches. Mechanical contractors, millwrights, and industrial maintenance technicians typically install this type of component in power transmission systems.

This double universal joint is used in industrial and commercial mechanical drive assemblies where constant-velocity output is required between offset or angled shafts. The DD-type configuration cancels the velocity fluctuation inherent in a single U-joint by using two yokes phased in parallel, making it appropriate for shaft connections in pumps, conveyors, machine tools, and similar rotating equipment. It is suited for both new installations and replacement service on existing drive trains requiring a joint with matching bore and torque specifications.

Key Features

• DD-type double joint design cancels velocity variation for smoother power transmission
• 10,680 in/lb torque capacity handles high-load mechanical drive applications
• 1-3/8 inch bore depth for secure shaft engagement
• Boot inside diameter of 0.875 inches and outside diameter of 1.75 inches
• 10 inch overall assembly length suits standard shaft spacing requirements

Compatibility

Designed as an OEM-style replacement or direct-fit addition for mechanical drive assemblies requiring a DD-type double universal joint with a 1-3/8 inch bore depth and 10,680 in/lb torque rating.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. De-energize and lock out all power sources before removing or installing rotating drive components, following applicable OSHA lockout/tagout procedures. Verify shaft diameter and bore fit before pressing or fastening the joint in place. Ensure both yokes are phased correctly in the DD configuration to achieve the intended constant-velocity output.