Application and DesignEN 4161.758.102q – 2017-09 93 Application and Design3.1 ApplicationThe DUOPLAN 2-speed gearbox by ZF is mainlyused in machine tool drives.As a result of the different installation positions,the gearbox can be used, for example, for turningmachines (horizontal B5) or machining centers(vertical V1). In addition, the gearboxes are used invarious equipment in which an increase in torqueor a reduction in speed is needed.The gearboxes have a coaxial output and aresuited to the high speeds encountered in machinetool engineering.3.2 Features 2-speed gearbox for AC and DC main spindledrives in machine tools Compact thanks to to planetary design Flange-mountable to all AC, DC and standardmotors High running smoothness and low-noiseoperation thanks to helical gearing Low torsional backlash Easy to install High radial forces permitted on output Combined axial and radial force thanks toflexible output bearings High efficiency Electromechanical gearchange