Lovejoy 68514417041 Dd-type Double Universal Joint

Product Description

The LOVEJOY 68514417041 is a DD-type double universal joint designed to transmit rotational torque through angular misalignment in mechanical drive systems. It handles up to 5,220 inch-pounds of torque and features a 1-1/16 inch bore depth, a 5/8 inch inside diameter, and a 1-1/4 inch outside diameter. The overall assembly length is 7-1/2 inches. Double universal joints are commonly specified where a single U-joint would produce unacceptable velocity variation through the driveline, making constant-velocity output critical. Mechanical and millwright technicians install this type of joint in industrial machinery, HVAC drive trains, pump drives, and material handling equipment.

This double universal joint suits applications in industrial and commercial mechanical systems where shaft misalignment must be accommodated without interrupting smooth torque transfer. The DD-type configuration cancels the velocity fluctuation inherent in single Cardan joints by pairing two yoke-and-cross assemblies in series. Typical installation scenarios include connecting a motor output shaft to a driven component when the shafts are offset angularly. At 2.22 pounds, the assembly is compact enough for space-constrained drive arrangements while still rated for substantial torque loads.

Key Features

• 5,220 in/lb torque rating suits demanding mechanical drive applications
• DD-type double joint design cancels velocity variation across the driveline
• 1-1/16 inch bore depth accommodates standard shaft sizes
• 5/8 inch inside diameter by 1-1/4 inch outside diameter cross section
• 7-1/2 inch overall assembly length for flexible installation clearance
• Lightweight at 2.22 pounds for ease of handling and installation

Compatibility

Designed as an OEM-style replacement or direct-fit double universal joint for industrial mechanical drive systems requiring a DD-type configuration with a 5/8 inch inside diameter, 1-1/4 inch outside diameter, and 5,220 in/lb torque capacity.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. De-energize and lock out the drive system before removing the existing joint or installing this assembly. Verify that shaft dimensions and angular misalignment fall within the joint's rated operating range before final assembly. Follow applicable ANSI and OSHA lockout/tagout procedures throughout the service procedure.