Duff Norton

Duff Norton: Over 140 Years of Industrial Motion Control Excellence

Duff Norton has been a trusted name in precision industrial equipment since 1883, building a global reputation for engineering solutions that address the most demanding lifting, positioning, and media transfer challenges. Browse the full Duff Norton range to find products designed for reliability, accuracy, and long service life across a wide spectrum of industrial and commercial applications.

A Legacy Built on Engineering Precision

Founded over 140 years ago, Duff Norton has continuously refined its approach to linear motion technology. Today, the brand operates as part of the Columbus McKinnon Group and is widely recognised as a leader in mechanical actuation — serving industries from aerospace and defence to food and beverage, packaging, metals production, and beyond. Whether the customer is a major multinational manufacturer or a growing SME, Duff Norton's engineering-first philosophy ensures every product is built to perform consistently across thousands of cycles.

Core Product Lines

Duff Norton's catalogue centres on four flagship product families, each engineered to meet the rigorous demands of modern industry:

• Screw Jacks: Perhaps the product most associated with the Duff Norton name, their screw jacks span an extraordinary range of capacities — from compact mini units handling up to 1,000 pounds, right through to heavy-duty acme screw jacks rated for up to 350 tons. Machine screw, ball screw, stainless steel, and anti-backlash variants are all available, giving engineers the flexibility to match the right jack to virtually any lifting or positioning requirement.
• Linear Actuators: Duff Norton's linear actuator range — including electromechanical and mechanical models — simplifies the specification of motion control systems by combining motor, control, and linear motion into a single package. These actuators are used across industries including transportation, marine, medical equipment, and industrial machinery. Custom stroke lengths and ISO/ANSI-compliant mounting ensure integration into both new and existing systems.
• Rotary Unions: Duff Norton's rotary unions (also known as rotary joints) are purpose-built to transfer fluids and gases from stationary sources into rotating or swivelling machinery. The product line includes multiple series — such as the 5000, 8000, and 9000 Series — compatible with media including water, steam, hot oils, air, and gas. Units are available in carbon steel and stainless steel construction with a bellows sealing system for dependable long-term performance.
• Ball Screws & Acme Screws: Duff Norton manufactures both ball screws and acme screws as standalone components for use in actuator and precision motion systems. Ball screw designs convert rotational input to linear motion with efficiencies of up to 95%, while acme screws offer positive mechanical action, precise positioning, and self-locking characteristics suited to slower, high-load applications.

Why Engineers Specify Duff Norton

Across the Asia Pacific region and globally, engineers trust Duff Norton products for several key reasons. The brand is ISO 9001 certified, and its products are designed to meet both ANSI and ISO standards — meaning they integrate cleanly with existing infrastructure without the need for custom adapters or proprietary hardware. Load capacity ratings are engineered conservatively, and positioning accuracy holds firm through extended duty cycles, which is why sectors like aerospace, defence, and precision manufacturing continue to rely on them. For harsh or corrosive environments, stainless steel variants offer the same mechanical performance with superior resistance to moisture and chemical exposure.

Duff Norton Australia serves customers throughout Australia, New Zealand, and the broader Asia Pacific region, providing both standard catalogue products and custom-engineered solutions for applications that fall outside standard parameters. With decades of application engineering expertise and a commitment to customer service excellence, Duff Norton remains the benchmark for industrial linear motion technology.