The Linear Voice Coil Motor, LVCM-019-016-02, from Moticont, produces 8.9 oz. (2.5 N) of continuous force and 28.0 oz. (7.8 N) of peak force in a 0.750 in. (19.1 mm) diameter x 0.94 in. (23.8 mm) long envelope (at mid stroke).  This motor has zero cogging and features accuracy and repeatability to less than1 μm (0.00004 in.) when operated in a closed loop as a DC servo motor. This voice coil motor is designed for applications such as: Pick-and-place, testing, laser steering, laser speckle reduction, mirror positioning, scanning, oscillation, switching, and hand held medical, dental, or industrial applications. The LVCM-019-016-02 linear voice coil motor has a stroke length of 0.25 in (6.4 mm). and is added to new or existing applications using the precision drilled and tapped 8-32 UNC-2B mounting holes. Other smaller and larger models as well as custom designs are available.  The LVCM-019-016-02 linear voice coil motor can be order as a complete plug-and-play system including an encoder and controller. source:automation