3/4'' DD Single U-Joint Steering Universal Joint

The 3/4'' DD Single U-Joint Steering Universal Joint is a precision-machined mechanical coupling designed to transmit torque and rotational motion between two misaligned shafts. It features a 3/4-inch Double D (DD) profile, commonly used in automotive steering columns, custom chassis, and industrial machinery where compact size and angular flexibility are required.

With a single U-joint configuration, this component allows for angular misalignment while maintaining consistent torque transfer and rotational control—essential in tight steering assemblies and compact power systems.

Key Features & Advantages
1. Precision Machined 3/4'' DD Bore
Designed to fit securely over 3/4'' DD shafts, the coupling ensures positive engagement, eliminating play or backlash during steering motion.

2. Single U-Joint Design for Angular Misalignment
The universal joint can accommodate up to 35° of angular offset, making it suitable for applications where shaft alignment is not perfectly linear.

3. Rugged Steel Construction
Made from high-strength alloy or carbon steel, the body is heat-treated and surface-finished (e.g., black oxide or zinc-plated) for durability, corrosion resistance, and long-term reliability in challenging environments.

4. Compact Profile
Its slim and efficient form allows installation in confined spaces, ideal for use in vehicles, machinery, and equipment with space constraints.

5. Smooth Operation and Long Service Life
Equipped with high-quality needle bearings or precision bushings, the joint delivers low-friction rotation, reduced vibration, and extended performance under continuous use.

6. Weldable and Adaptable
The steel body allows for welded customization, and the DD ends can also interface with intermediate shafts or custom setups for steering or drive line connections.

Applications
The 3/4'' DD Single U-Joint Steering Universal Joint is widely used in:

Automotive Steering Systems
Common in hot rods, race cars, off-road vehicles, and classic car restorations, it connects the steering column to the rack-and-pinion or gear box, accommodating shaft angle changes.

Custom Vehicle Builds and Chassis Kits
Used in aftermarket steering assemblies, allowing flexible routing of steering shafts in modified vehicle designs.

ATVs, UTVs, and Utility Vehicles
Helps manage angular changes in steering columns under rough terrain or vehicle articulation.

Industrial Machinery
Transmits rotational motion in compact mechanical assemblies where flexible alignment is necessary.

Agricultural and Off-Highway Equipment
Delivers reliable torque transfer in rugged conditions where shafts are not perfectly aligned.

The 3/4'' DD Single U-Joint Steering Universal Joint offers a rugged, compact, and precise solution for torque transmission and angular compensation in steering systems and mechanical power setups. Its tight tolerance, strong engagement, and long-term durability make it a trusted component for OEMs, custom fabricators, and industrial engineers alike.