Full definition
Rotary actuator converting hydraulic energy into torque and rotational motion. Types: gear motor (economical, up to 250 bar, high speed), vane (quiet, uniform torque), axial piston (high efficiency 93-97%, up to 400 bar), radial piston (very high torque at low speed, up to 700 bar). Torque = P × Vg / (2π). Specific displacement: 5-4,000 cm³/rev. Brands: Parker, Bosch Rexroth (A2FM), Eaton (Char-Lynn), SAI, Sauer Danfoss.