The miniature GVCM-019-032-02 Linear Voice Coil Servo Motor has been released by Moticont. It is only three-quarters of an inch (19.0 mm) in diameter and features a 0.875 in. (22.2 mm) stroke.  Also called an electric cylinder, this miniature linear servomotor, features a continuous high-force-to-size ratio of 7.4 ounces (2.1 N) and 23.3 ounces (6.5 N) of peak force at a 10 percent duty cycle.