An electric linear actuator is a reciprocating actuator driven by an electric motor, which is suitable for all linear movements that require reciprocating push and pull. And it has overload automatic protection performance, manual operation and electric driven combined. Electric Linear Actuators with 3-phase AC motors are not only match the load capacity of hydraulic cylinders and exceed the load capacity of of conventional electromechanical linear actuators. For example: No oil leaks, contamination or fire risk. Low noise. Higher dynamic and speed capacity and longer life. Low power consumption and running costs. Accurate and repeatable positioning using simplified system. Ease of installation, no pipework, powerpack and valves and Easy to synchronise more than one unit. Making them ideal for replacing pneumatic & hydraulic cylinders. Working Principle: The acme lead screw converts rotary motion to linear movement. As the screw rotates, the nut extends and retracts the push rod through the forward and reverse rotation of the motor. When the external force exceeds the rated thrust of the push rod, it will automatically stop through the internal safety switches.