System actuators use hydraulic, electronic and pneumatic signals to help activate process control equipment, including mechanical arms, robots, and other automating agents. Common actuators include electrical motors, pistons, electro-active polymers, thermal bimorphs, and more, with every actuator especially equipped to start specific processes. Important factors for actuators include the ability for precision control, operating life, and power consumption versus work ability.

Arrow AZ Pneumatic Dynact Humphrey
Kogani Mead Numatics Parker-Miller
Pisco Pneumax Rota-Cyl & SMC Pneumatics