This 12 V micro-sized linear actuator with a 210:1 gear reduction can lift loads up to 8.1 kgf [18 lb or 80 N] and can withstand static loads up to 4 kgf [9 lb or 40 N]. It has a maximum speed of 8.6 mm/s [0.3″/s] at no load and 6 mm/s [0.2″/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 100 mm [3.94″] stroke and no feedback potentiometer.