Product Description:

The MDD0665D-N-040-N2M-095PB0 is a synchronous motor produced by Bosch Rexroth Indramat within the MDD Synchronous Motors series. Designed for digital drive controllers, it supports DSF with a multi-turn absolute encoder for closed-loop positioning. The power leads exit on side B, and the output shaft has a keyway that follows DIN 6885-1 to simplify torque transmission. Because the unit is supplied without a blocking brake, any holding action must be implemented externally. In machinery frames, the 95 mm centering diameter aligns the stator precisely with mounting surfaces.

At its rated operating point, the motor delivers a continuous stall torque of 2.7 Nm while drawing 6.3 A of phase current. These steady-state values indicate the output available for static positioning tasks. When motion is required, the rotor can accelerate to a nominal speed of 4000 rpm and accept momentary surges up to a peak current of 28.5 A. The torque constant is 0.43 Nm/A, so controller current commands correspond closely to mechanical output. For short duty bursts, the windings can reach a theoretical maximum torque of 7.8 Nm before magnetic saturation limits further increase. The frame also has a 30-minute thermal time constant, which indicates how quickly it heats under continuous loading.

Dynamic behavior is influenced by a rotor inertia of 3.8 × 10⁻⁴ kg·m², which allows rapid following of velocity setpoints without excessive drive current overshoot. The stator windings present an inductance of 2.6 mH and a resistance of 2.0 ohms, and these values shape the electrical time constant that the drive compensates during field-oriented control. With a total mass of 5.3 kg, the motor can be mounted on lightweight gantries or pick-and-place heads without overloading the axis. The compact frame also supports high cycle rates while maintaining consistent heat dissipation through its aluminum housing.