Today, a machine tool must be universally applicable in order to process different materials. The two-speed ZF Duoplan manual gearboxes live up to these demands. The ZF Duoplan two-speed gearbox is mainly used in machine tool main-spindle drives, test-benches and applications where high torque is needed. By way of example, the gearbox can be used in turning machines (horizontal B3/B5), machining centers (vertical V1/V3) thanks to its variable installation position. The gearbox is also suitable for use in many systems in which torque increase and/or speed reduction is required. Machine tools are designed to be universal so that they can process different materials. This requires both high cutting speeds for soft materials as well as high cutting forces for hard materials requirements which a two-speed gearbox can fulfill, since it can either retain high motor speeds (i = 1:1) or multiply the motor torque (e.g. ratio i = 4.00) and reduce the speeds, both by the same factor.