![]() Although all rotary actuators can provide up to 360 degrees of rotation, many designs can provide continuous rotation through multiples of 360 degrees. This rotary actuator from Harmonic Drive incorporates a pancake servo motor, gearing, crossed roller bearing output, and an integrated encoder.Įlectromechanical rotary actuators are designed to move loads in angular increments with very high positioning accuracy and repeatability. While these rotary actuators can be driven by pneumatic, hydraulic, or electromechanical power, we’ll focus here on electromechanical versions. But there also exists a class of actuators that provide rotary motion for positioning a load radially around a fixed axis. When we think about actuators, we typically think about linear actuators - devices that move loads in a straight line, driven by a screw, belt, or other mechanical power transmission device.
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