The AD 11, AD 12 and AD 14 rotary drive units are synchronous machines with a high power density. The motors achieve a torque of 1 – 4 Nm at speeds between 230 and 1000 rpm in a compact package. This enables gearless operation in many applications. Thanks to a special protection provided by a double-row angular contact ball bearing, high axial loads are also possible without any problems. This means that the drive units can be connected directly to a machine without a coupling and can therefore be easily integrated into existing production lines.