Duff-Norton Linear Actuators

Duff-Norton linear actuators offer a packaged solution to your motion requirements. The integration of the linear actuator and motor simplifies the process of specifying and purchasing components for your motion system.
Duff-Norton linear actuators offer several advantages over hydraulic cylinders when low maintenance, installation, and operating costs and, environmental impact are considerations.
Regardless of how simple your requirements or how complex, Duff-Norton electromechanical industrial linear actuators can be customized to suit your application.
Limit Switch
The Rotary Union Limit Switch design provides the ultimate in adjustability with even higher accuracy than a cam switch.
- Switches rated 15 amps, 125-277 VAC; 1/2 amp, 125 VDC; 1/4 amp, 250 VDC.
- Switches SPST-N.C. SPDT available.
- Adaptable to all Duff-Norton mechanical actuators 2 ton and larger.
- Sturdy and compact, corrosion-resistant aluminum housing and cover, NEMA 4 enclosure rating, threaded 1/2 inch NPT conduit opening, brass nuts travel on stainless steel shaft.
- Easy to adjust, slotted traveling nuts allow precise fine-adjustment without the trial and error of cam type switches.
- Three available ratios to serve different travel requirements, while optimizing repeatability.
- Operating temperature, -20° to 150°F. Lifetime lubricated with synthetic grease.
- Can be mounted on either side of actuator, in four 90° orientations.
- May be ordered on actuators close-mounted to shortened worms, reducing actuator width.
- Additional rotary limit switches available with 4 positions, or for hazardous locations, consult factory.




