Product Description:

The MDD090A-N-020-N2M-130GR1 is a synchronous servo motor built by Bosch Rexroth Indramat for the MDD Synchronous Motors series. Designed for use with compatible digital drive controllers, it transforms precisely metered three-phase power into rotary motion that advances or positions machine elements in automated assembly, packaging, and material-handling lines. Its role in those systems is to provide controllable torque and speed so that actuators follow programmed trajectories with repeatable accuracy.

At standstill, the motor can deliver a continuous torque of 3.7 Nm, allowing the drive to hold or slowly move loads without overheating. When energized to its nominal electrical frequency, the rotor reaches 2000 rpm, a speed suited to medium-duty positioning tasks. Mechanical alignment to the machine frame is aided by a centering pilot of 130 mm, and the rotor is dynamically balanced to the standard grade to limit vibration. A factory-installed blocking brake supplies 6.5 Nm of static holding torque, so vertical axes remain motionless when power is removed. Motion feedback travels through digital servo feedback (DSF) signals, enabling the controller to compute instantaneous position and velocity for tight closed-loop regulation.

For installation, the compact A-length body of the size-090 frame occupies minimal depth, and its standard housing maintains consistent external dimensions across the series. Power and feedback leads exit on the right side through a keyed connector, which simplifies cable routing in tight enclosures. The motor includes an integrated multi-turn absolute encoder, giving the controller knowledge of shaft revolutions even after power loss, which complements the blocking brake during restart sequences. A plain shaft with a factory-installed shaft seal helps prevent lubricant escape while keeping dust or coolant from entering the bearing zone. The single-ended shaft arrangement on side A leaves no extension on side B, which benefits installations that place other components close to the rear of the motor.