A equipment rack mated with a pinion gear creates a linear actuator that Gear Rack For Rack Actuator converts rotational motion into linear movement or vice versa. The pinion, a circular gear, engages the teeth on the rack, a straight, or “linear,” gear. Rotational motion applied to the pinion will cause the rack to go relative the pinion; conversely, linear motion applied to the rack may cause the pinion to go relative to the rack. In either situation, the input motion is translated into the opposite output motion.
Available in five different models of stroke lengths between 10mm and 30mm, it’s easy to find the right rack and pinion linear actuator to your requirements. Special stroke lengths and custom rack and pinion gearboxes can be supplied to meet your requirements.
Rack and pinion actuators provide a rotational movement made to open and close quarter-switch valves such as for example ball, butterfly, or plug valves and also for operating industrial or commercial dampers.
The rotational motion of a rack and pinion actuator is accomplished via linear movement and two gears. A circular equipment, described a 
“pinion” engages one’s teeth of a linear equipment “bar” referred to as the “rack”.
Pneumatic actuators use pistons that are mounted on the rack. As air or spring power is applied the to pistons, the rack can be “pushed” inward or “pulled” outward. This linear motion is used in the rotary pinion equipment (in both directions) providing bi-directional rotation.
Rack and pinion actuators pistons can be pressurized with air flow, gas, or oil to supply the linear the motion that spins the pinion gear. To rotate the pinion equipment in the contrary direction, the air, gas, or oil must be redirected to the additional sides of the piston, or make use of coil springs as the power source for rotation. Rack and pinion actuators using springs are referred to as “spring-return actuators”. Actuators that rely on opposite side pressurization of the rack are known as “direct acting”.
Most actuators are created for 100-level travel with clockwise and counterclockwise travel adjustment for open up and closed positions. Globe standard ISO mounting pad are commonly open to provide relieve and versatility in direct valve installation.
Pneumatic pneumatic rack and pinion actuators are compact and save space. They are reliable, durable and provide an excellent life cycle. There are numerous brands of rack and pinion actuators on the market, all with subtle variations in piston seals, shaft seals, spring style and body designs.
For almost twenty years we have used our engineering expertise and industry experience to continually improve our items, striving to supply robust solutions and competitive prices. Designed for easy integration and reliability, our products have been proven in a number of industries and applications including chemical, pharmaceutical, food and beverage, power, coal and oil, wastewater, and dampers. We also strive to provide exceptional customer care to back our products and keep your downtime to a minimum.
Our patented adjustable dual travel stops provide the greatest amount of control in the market at ±10 degrees upon each end of the stroke. To check our actuators we’ve a complete selection of control accessories including solenoid valves, limit switches, positioners, and a wide assortment of automation hardware.
Rack-and-pinion pneumatic actuators, also known as limited rotation cylinders, are rotary actuators used for turning, opening, closing, blending, oscillating, positioning, steering and much more mechanical functions involving restricted rotation. These actuators are also often used for automation of quarter-change valves, like ball or butterfly valves.
Pneumatic rack-and-pinion actuators convert the energy of compressed air through a pneumatic cylinder to an oscillating rotary motion. The clean, dried out, and processed gas necessary by this actuator is usually provided via a central compressed surroundings station, which often supports a variety of pneumatic products in a process system.