This 12 V micro-sized linear actuator with a 50:1 gear reduction can lift loads up to 2.2 kgf [4.9 lb or 22 N] and can withstand static loads up to 4 kgf [9 lb or 40 N]. It has a maximum speed of 28 mm/s [1.1″/s] at no load and 21 mm/s [0.8″/s] at the maximum load. Limit switches at each end make the actuator easy to control over its full range of motion. The shaft holds its position when unpowered. This version has a 50 mm [1.97″] stroke and no feedback potentiometer.