The HCDS-051-064 series of open-aperture voice coil stages are linear dc motor-driven stages. Designed for closed-loop servo operation, an integral quadrature optical encoder with differential outputs is standard. The stages are clean, quiet and efficient with low inertia, high acceleration and high speed. Each stage has a built-in home switch for accurate initialization upon power up. These compact stages have a footprint of 11.5 in (292.1 mm) long x 4 in (101.6 mm) wide x 3.755 in (95.4 mm) high. Each stage has precision-threaded mounting holes for tooling or fixtures.