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

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.

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.)

phone 513.247.5465 fax 513.247.5462

Certified to
ANSI/ISO/ASQ
Q9001-2008

Canadian
Registration
Numbers

TA-Luft
Certified Valves

API 607
4th Edition Certified
Firesafe Valves

Valves & Actuators
Coast Guard Approved
ABS Approved

Product Overview