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Limit Switch

The Rotary Union Limit Switch design provides the ultimate in adjustability with even higher accuracy than a cam switch.

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Features and Benefits

  • Switches Rated
    15 amps, 125-277 VAC; 1/2 amp, 125 VDC; 1/4 amp, 250 VDC.
  • Available Switches
  • SPST-N.C. or SPDT .
  • Adaptable to all Duff-Norton Screw Jacks 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.
  • Mounting Options
    Can be mounted on either side of actuator, in four 90° orientations.
  • Order Options
    May be ordered on actuators close-mounted to shortened worms, reducing actuator width.
  • Additional Options
    Rotary limit switches are available with 4 positions, or for hazardous locations, consult factory.

Documents

Brochures & Catalogs

[Catalogs] Mechanical Actuator (Screw Jacks) Design Guide