RABROPAR 3/4" DD x 3/4" DD Steering U-Joint Black Powder-Coated — Compact 3-1/4" Length, 35° Limit

RABROPAR's 3/4" DD x 3/4" DD powder-coated universal steering U-joint is a compact, corrosion-resistant single-shaft coupling designed to transmit steering input between shafts with a 35° working angle limit.

This steering U-joint couples two 3/4" Double-D shafts without splines and delivers reliable motion transfer in tight steering linkages. Its black powder-coat finish improves durability and resists surface wear, while the compact footprint (3-1/4" overall length, 1-5/8" outside diameter) makes it suitable for custom steering applications, go-karts, small vehicles, and machinery requiring precise shaft alignment.

How does this U-joint connect to my steering shafts?

The RABROPAR unit uses Double-D (DD) connections on both ends, so it slips onto 3/4" DD shafts and locks with the supplied set screws for a positive drive. Because it has no splines, alignment is achieved by the DD flat and tightened screws, creating a simple, backlash-minimizing joint.

• Fits 3/4" Double-D shafts at both ends
• Two set screws per end secure the connection
• No splines—rely on DD flats and clamps for torque transfer
• Compact 3-1/4" overall length for tight assemblies

What performance limits should I keep in mind?

Design limits are a 35° maximum working angle and a maximum operating speed of 4000 rpm. Staying within those parameters prevents accelerated wear and maintains consistent steering feel; use a larger or higher-duty joint if your application demands greater angle or speed.

• Maximum working angle: 35°
• Maximum recommended speed: 4000 rpm
• Designed for steering torque, not heavy industrial loads
• Check shaft alignment to reduce side loads and vibration

What are the physical dimensions and finish details?

The coupling measures 3-1/4" overall with a 1-5/8" outside diameter, providing a small footprint while maintaining adequate material strength. Its black powder-coated exterior improves corrosion resistance and provides a consistent appearance in open or exposed steering installations.

• Overall length: 3-1/4"
• Outside diameter: 1-5/8"
• Finish: durable black powder coat
• Material: metal coupling engineered for steering use

Who this is for: this RABROPAR universal steering shaft is aimed at builders, restorers, and DIY mechanics who need a compact, reliable DD-to-DD steering coupling for low- to medium-speed applications. If you run 3/4" Double-D steering shafts and require a neat, powder-coated joint with set-screw retention and a 35° angular capacity, this part offers a straightforward, cost-effective solution. For extreme angles, very high RPMs, or heavy industrial torque, consider a larger or splined universal joint designed for those conditions.