Electric Power E.H. Wachs German manufactured Eibenstock electric drives represent the pinnacle of precision electric drive motors. These HD drive motors are more compact yet more powerful, and perfectly matched to drive our DynaPrep MDSF Split Frames. Highly efficient, they reduce the energy loss inherent in converting electric power to pneumatic or hydraulic, requiring less hardware. Wachs Servo Drive is a complete system that includes the drive motor, power controller and remote control pendant. It’s powerful - the standard 3.8 kW servo motor produces the equivalent of 5 hp, greater than the typical hydraulic 4 hp motor or pneumatic 2.5hp drive motor.