Rotary Rack & Pinion Actuators

  • Double Acting Actuators
  • Spring Return Actuators

Triac pneumatic rack and pinion actuators are designed and manufactured to provide the highest cycle-life on the market. We can accessorize them to accomplish virtually any control requirement. They are available with various mounting dimension configurations and span eleven models for appropriate torque compatibility. Our extensive inventory and engineering capabilities allow us to respond to your needs with flexibility. We pride ourselves on exceeding customer expectations. Contact us for application assistance.

Rotary Rack & Pinion Actuators Feature

  • Double acting and spring return
  • Dual travel stops
  • Torques to 36,000 in. lbs.
  • DA and SR common end caps
  • ISO 5211 mounting dimensions
  • Wide base for direct mount to many butterfly valves
  • Substantial pinion bearings mean high cycle life
  • Corrosion resistant hard anodized finish
  • Each unit serialized and bar coded
  • Namur accessory mounting configuration
  • Custom Accessory Mounting

Rotary Rack & Pinion Actuators General Techical Data

  • Standard working temperature -20ºF to 175ºF
  • Low temperature and high temperature option
  • Maximum working pressure 150 psig
  • Operating media: clean, dry air, non-corrosive gas or light hydraulic oil
  • Air supply 40 psi - 150 psi
  • Rotation 100º
  • Dual travel stops standard
  • Mounting dimensions
    • Accessories to Namur - VDI/VDE
    • Valve mounting to ISO 5211 (TR20 - 2R1750)
    • Custom configurations available in quantity
  • Permanently lubricated units

Rotary Rack & Pinion Actuators Operation

Rack and Pinion Double Acting Actuator

Double Acting Operation

CCW
Air is supplied to Port A forcing the pistons away from each other (toward ends), rotating drive pinion counterclockwise and exhausting air out of Port B.

CW
Air is supplied to Port B forcing the pistons toward each other (toward center), rotating drive pinion clockwise and exhausting air out of Port A.

Rack and Pinion Spring Return Actuator

Spring Return Operation

CCW
Air is supplied to Port A forcing the pistons away from each other (toward ends), rotating drive pinion counterclockwise, compressing springs and exhausting air out of Port B.

FAIL CW
Air failure (loss of pressure) allows compressed springs to force pistons toward each other (toward center), rotating drive.

*(Unit is capable of failure in counterclockwise direction by reversing pistons inside of housing.)

Rotary Rack and Pinion Actuators
phone 513.247.5465    fax 513.247.5462
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