What is a linear actuator?

A linear actuator is an electromechanical device used to create motion in a straight line. It usually consists of an electric motor, a gear and a spindle nut, which converts the rotary motion from the motor into a linear motion. The motor can be either of the AC or DC type, depending on power requirements and other factors.

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What is a linear actuator used for?

Linear actuators are used in various industries and applications, they can be used to move, position, adjust, regulate, open/close, lift/lower or turn something with a linear motion, depending on the application and the requirements of the specific system.

A linear actuator can be controlled locally or remotely from the control room via standardized control systems, depending on the application and control requirements. Linear actuators can have different capacities for force, speed and stroke depending on the needs of the specific application.

How do linear actuators work?

When the actuator receives a signal, the motor converts the electrical energy into mechanical energy and rotates the gear connected to the spindle. This causes the spindle nut to rotate and thus moves the piston rod either outwards or inwards, depending on which signal the actuator receives.

A tighter threading and less spindle pitch gives a slower movement, but with a higher load capacity. On the other hand, a sparser threading and higher spindle pitch give a faster movement with a lower load capacity.

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