Buy linear actuator

An actuator is a device that is used to alternate the rotated position of an object. Like the human wrist, an actuator enables the rotation of an object. However, unlike the human wrist an actuator is available in a wide variety of models with different sizes, torques and rotation angles. The energy for the rotation is delivered by pneumatic pressure. The actuator converts the air pressure from a linear motion to a rotating motion.

Linear actuators provide linear motion via a motor driven ball screw or ACME screw assembly. The linear actuator's load is attached to the end of screw, or rod, and is unsupported. The screw can be direct, belt, or gear driven. Important performance specifications to consider when searching for linear actuators include stroke, maximum rated load or force, maximum rated speed, continuous power, and system backlash. Stroke is the distance between fully extended and fully retracted rod positions. The maximum rated load or force is not the maximum static load. The maximum rated speed is the maximum actuator linear speed; typically rated at low or no load. Continuous power is sustainable power; it does not include short-term peak power ratings. Backlash is position error due to direction change. Motor choices include DC, DC servo, DC brushless, DC brushless servo, AC, AC servo, and stepper. Input power can be specified for DC, AC, or stepper motors.

The basic electronic actuator enables communication with the newest fieldbus systems as well as the traditional 4 - 20 mA. Analog signals. Product innovations include the addition of drive inserts for easy mounting to a wide variety of valve types and an exclusive universal power supply connection. Here most AC DC and three phase supplies may be directly connected to the actuator. Thus the ELQ can rightly be regarded as the new generation of electric actuators

All pneumatic rotary actuators are rack and pinion design and incorporate output flange hard stop. The features of this design include high torque from a compact configuration.

The units are hi torque due to cross porting the two piston bores this makes the Rotary Actuator operate with zero backlash at the end of rotations for precise pneumatic rotary positioning. Because of their constant torque output and resistance to drift, they are often used for precision control. The ultra-thin pneumatic rotary actuators have a dowel pin embedded in the body and two internal hard stops in the output flange that eliminate pinion breakage. This allows for higher cycle speeds and heavier payloads than comparable units on the market.

Hydraulic rotary actuators use a pressurized, incompressible fluid to rotate mechanical components. They are faster and more powerful than pneumatic actuators because the high pressures used in hydraulic systems produce greater torque. Hydraulic rotary actuators use two types of rotational elements: circular shafts and tables. Typically, circular shafts include a keyway while tables include a bolt pattern for mounting other components. Single-shaft devices provide an output on only one side of the actuator. Double-shaft devices provide outputs on both sides of the actuator. To convert linear motion into shaft rotation, helical spline teeth on the shaft engage matching splines on the inside diameter of a piston. As hydraulic pressure is applied, the piston is displaced axially within the housing and the splines cause the shaft to rotate. When a control valve is closed, hydraulic fluid is trapped inside the housing and the shaft is locked in place. Single-piston devices drive a rack that rotates the pinion. Double-piston and four-piston devices drive racks on both sides of the pinion. Single-chamber and double-chamber rotary vanes that are actuated by pressurized air are also available.