Electro motor driven Linear Actuator. It creates motion in a straight line in contrast to the circular motion of a conventional electric motor. Used in computer peripherals such as disk drives and printers. Wide variety of applications on Robotics.used on valves and dampers. Could be coupled with outer gear system to produce desirable torque. Also can be connected to an electronic speed control to vary the speed of the linear shaft movement. Available in 4, 8, 12, 18, 24 volts. Please specify the required torque and shaft length.