Pololu Glideforce LACT2-12V-10 Light-Duty Linear Actuator: 25kgf, 2" Stroke, 1.1"/s, 12V

Glideforce LACT2-12V-10 Light-Duty Linear Actuator: 25kgf, 2" Stroke, 1.1"/s, 12V. This 12 V light-duty (LD) linear actuator with a 10:1 gear reduction can lift loads up to 25 kgf [55 lbs or 250 N] and can withstand static loads up to 250 kgf [550 lbs or 2500 N]. It has a maximum speed of 28 mm/s [1.1″/s] at no load and 23 mm/s [0.9″/s] at the maximum load. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 2-inch stroke and no feedback potentiometer.