Product Description:

The MDD071A-N-040-N2S-095GR1 is an AC synchronous servo unit manufactured by Bosch Rexroth Indramat within the MDD Synchronous Motors series. Designed as a motor for digital drive controllers, it converts inverter current into rotary motion for positioning tables, feed axes, and light-duty spindles. Permanent magnets in the rotor combine with a low-inertia stack to support quick reversals, while the stator winding is cooled through the external machine frame so no additional fan is required. Because it is intended for digital drive controllers, commutation and current regulation are handled by the matched drive for accurate speed and position control. This configuration gives machine builders a compact source of controllable torque that integrates directly into closed cabinets.

The motor delivers a continuous standstill torque of 2.2 Nm, allowing it to hold tooling or product carriers without overheating during dwell periods. When commanded to full speed, it reaches 4000 min⁻¹, a range suited for mid-range feed tasks that must stay synchronized with electronic gearing functions. A blocking brake rated at 3.0 Nm engages mechanically whenever the drive is disabled, preventing unplanned motion on vertical or suspended loads. Position data is returned over Digital servo feedback (DSF), enabling high-resolution loop closure without separate encoder wiring. Power, brake, and feedback cores exit through a single Connector that is oriented on the right side of the end bell, simplifying harness routing inside tight enclosures.

Mechanical dimensions further describe how the unit mounts and aligns with machine frames. A centering diameter of 95 mm mates to precision pilot bores, and the frame size code 071 matches gearboxes and clamps developed for this series. A dedicated shaft seal is installed to keep lubricant inside the bearing package and to block coolant or dust from the production area. Both the rotor and housing follow Standard balancing quality, minimizing vibration transfer to adjacent linear guides and maintaining smooth motion even at the higher ends of the speed envelope. The pilot fit and compact frame geometry help maintain shaft alignment when the motor is attached to precision machine components.