Duff-Norton Screw Jacks

Duff-Norton is the leading provider and offers the industry’s largest selection of actuator models and capacities. Machine Screw Actuators, Ball Screw Actuators, Anti-Backlash Actuators, and Continuous Duty Actuators and more along with a complete offering of actuator controls, and power transmission components are readily available.

Duff-Norton 1600 Series Rotary Union

For Oscillation & Continuous Rotation – Up to 1500 RPM

The 1600 Series rotary unions are engineered for demanding applications requiring two fluid passages and high-speed rotation. Featuring dual ball bearings and a PTFE seal, these connectors ensure smooth, full-bore flow across a wide range of industrial uses.

Rotation Speed: Articulation (≤ 5 RPM), Low (5–20 RPM), Intermediate (20–1500 RPM)
Media Compatibility: Air, Water, Oil, Gas
Pressure Range: Up to 200 bar
Temperature Range: -20°C to 120°C
Materials: Nickel-Plated Steel, Ceramic Shaft Options Available
Connections: BSP or NPT, Male & Female Threads
Use Case: Ideal for applications with rotating shafts or double-effect cylinder control.

Duff-Norton 1100 Series Rotary Union

Reliable Swiveling – Up to 5 RPM

Compact and rugged, the 1100 Series rotary unions are designed for hose-end applications requiring slow rotation or oscillation. The ball bearing with PTFE seal allows full-bore, leak-tight rotation under pressure.

Rotation Speed: Oscillation (≤ 5 RPM)
Media Compatibility: Air, Water, Oil, Gas, Vacuum, Chemicals
Pressure Range: 0–50 bar (varies by version)
Temperature Range: Up to 200°C
Materials: Nickel-Plated Steel or Stainless Steel (316L)
Connections: BSP, Male & Female Threads
Use Case: Ideal for hose reels, lubrication systems, or low-speed rotary coupling in chemical or pneumatic systems.