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    How Does a Linear Actuator Work?

    A linear actuator is an electric drive device that converts the rotational movement of the motor into the linear reciprocating movement of the pushrod. It can be used as an executive machine in various simple or complex technological processes to realize remote control, centralized control or automatic control.

    What components does it consist of?

    Mainly composed of the drive motor, reduction gear, screw, nut, pushrod, spring, micro-control switch, etc.

    What are the main applications?

    The electric linear actuators can be widely used in furniture, electronics, machinery, metallurgy, transportation, petroleum, chemical, transportation, construction and other industries.

    Test circuit diagram

    • KA1 & KA2 control the extension and retraction of the electric linear actuator respectively, and their circuits are interlocked.
    • SB1: Press the SB1 button and the linear actuator rod will extend.
    • SB2: Press the SB2 button and the linear actuator lever retracts.

    Test circuit diagram


    Using two-button switches and two relays to make the control circuit. The electric linear actuator has two lead wires. This ATO 24V DC power supply will provide them with power. Control principle: Extending and retracting can be realized by the exchanged electrical polarity. 

    Linear actuator wiring

    Note: The two relays form an interlock circuit, which respectively controls the extension and contraction of the linear actuator.

    You can watch the video below for more details on wiring and running linear actuators.

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