Product Description:

The MDD090A-N-020-N2L-110PR2 is a three-phase synchronous servo motor produced by Bosch Rexroth Indramat for its MDD Synchronous Motors series. As a motor for digital drive controllers, it converts controlled electrical pulses into regulated mechanical rotation for positioning and velocity tasks in industrial automation. The model applies standard rotor balancing to minimize vibration and features a standard housing suited for direct machine-frame mounting. Equipment designers specify this motor when compact torque output, electronic feedback, and mechanical reliability must be combined in one electromechanical unit.

During operation, the rotor is designed to reach a nominal velocity of 2000 rpm, allowing the drive amplifier to maintain accurate process speed over a wide frequency range. At standstill, the electromagnetic system supplies 3.7 Nm of continuous torque, so indexing movements can be performed without overheating. A blocking brake rated at 11.0 Nm locks the shaft when power is cut, preventing back-driving on vertical or suspended loads. Installation is assisted by the 110 mm centering diameter that positions the flange precisely against the machine face, while the power and feedback connectors exit toward the right side, simplifying cable routing inside compact cabinets.

The encoder system employs digital servo feedback (DSF), so absolute position data reaches the controller without additional external transducers. All electrical terminations are made through a single connector, and the mechanical output is a keyway shaft that accepts standard keyed couplings. With the series size code 090, length code A, and a shaft seal fitted, the motor helps protect its internal windings from coolant spray or dust ingress. The design omits a side B shaft extension, allowing the load to be coupled only at the drive end, which helps keep the overall footprint narrow in multi-axis assemblies.