Air Cylinders (565 companies)
Air cylinders are pneumatic linear actuators that are driven by a pressure differential in the cylinder's chambers. They may be single-acting (with a spring return) or double-acting.
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Hydraulic Cylinders (607 companies)
Hydraulic cylinders are actuation devices that utilize pressurized hydraulic fluid to produce linear motion and force.
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Linear Actuators (551 companies)
Electric linear actuators have an output rod that provides linear motion via a motor driven ball screw, lead screw, or ACME screw assembly. The actuator's load is attached to the end of a screw or rod and is often unsupported.
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Linear Thrusters (71 companies)
Linear thrusters use double-acting pneumatic, hydraulic, or electrohydraulic cylinders mated to plates and shafts to provide cyclical linear motion. They are used in conveying, positioning and inspection systems.
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Piezoelectric Actuators (46 companies)
Piezoelectric actuators are devices that produce a small displacement with a high force capability when voltage is applied. 
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