Many applications call for the use of electromechanical linear actuation — which includes electric motors paired with various mechanical components for controlled movement of equipment or payloads. Options for linear actuation have proliferated in recent years. Actuators and linear-motion options today are also easier than ever to integrate into machinery … and they’re often less costly than in the past. Most linear actuators turn an electric motor’s rotary power into linear motion in one of three ways: Through a rack-and-pinion set. Through a chain or belt (via a sprocket or pulley mounted to the motor output). Through a screw drive — whether ballscrew, leadscrew, or roller screw A fourth option for linear actuation is linear motors — a technologically advanced direct-drive method of transmitting motor power into axis motion. These entirely omit the mechanical linkage for rotary-to-linear conversion and instead include a moving forcer that moves along a stationary platen.
In this Design Guide, we’ll focus on actuators employing all of these variations and the applications for which they’re most suitable. We’ll also do a deeper dive on a couple linear-bearing options for electrically actuated systems.
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Filed Under: Design Guides