Product Description:

The MDD090A-N-040-N2L-110GA0 is a three-phase synchronous servo motor engineered by Bosch Rexroth Indramat for the MDD Synchronous Motors series. As a motor for digital drive controllers, it provides closed-loop torque and speed for industrial axes that demand repeatable motion. When coupled with a matching drive, it supports rapid acceleration, controlled deceleration, and precise position holding across automated packaging, assembly, and material-handling equipment. Its compact 090 frame and A length allow integration in tight machine envelopes without supplemental fan cooling. The closed-loop design also helps the drive correct speed and position deviations during normal operation.

The motor develops a continuous standstill torque of 3.7 Nm, meaning it can hold that load indefinitely while the windings stay within their thermal limit. Under rated excitation, it reaches a nominal speed of 4000 rpm, giving a wide mechanical range for indexing or constant-velocity tasks. A centering diameter of 110 mm provides the pilot fit that aligns the flange with the machine plate and helps maintain concentric rotation. Rotor position is reported through digital servo feedback (DSF), so the controller receives high-resolution increments for closed-loop commutation and velocity control. Power and signal conductors exit on Side A, which can simplify cable routing when the motor is mounted with the shaft facing forward.

The electrical interface uses a keyed connector, which permits quick exchange without disturbing the mechanical mounting. The drive end carries a plain shaft, suitable for press-fit couplings or collets where keyways are unnecessary. Contaminants are blocked by a design supplied with a shaft seal, which helps extend bearing life where coolant splash or fine dust is present. The unit is delivered without a blocking brake, so static holding torque must be supplied by the drive or an external clamp. Standard balancing minimizes vibration at high speed, and the standard housing protects internal parts without increasing overall diameter.