Precision planetary gear unit P with safety brake in MB adapter for servo motor. Total gear ratio range 3:1 – 100:1. Torques 109 – 3,450 Nm. Brake rated torques 8 – 300 Nm. Backlash 1.0 – 4.0 arcmin. Efficiency 95 – 97 %. Safe braking in the event of a power failure. Optionally with servo motor, with modular rack and pinion, with reduced rotational backlash.