Linear Actuator is based on a step or a DC motor motion structure, for small to medium power. The Linear Actuator is built from a screw moving throw the motor, or a motor with a "fix" screw attached to it with a moving nut. This can be a "standard" or a Zero Backlash nut. Linear electric cylinders can also be supplied in a "integrated motor" form that includes a driver and a screw as one unit