Product Description:

The MDC3.20C/MM-0 is a permanent-magnet direct-current motor designed by Bosch Rexroth Indramat for the MDC DC Motors series. It converts a controlled DC supply into rotary mechanical power for automated equipment such as web tensioners, indexing tables, and material-handling drives. When integrated with a matched electronic converter, the motor delivers stable low-speed performance and high momentary overload capability, supporting precise positioning and velocity regulation in production lines.

The motor provides a continuous shaft output of 16 Nm while drawing a steady armature current of 22 A. It has a torque constant of 0.8 Nm/A, indicating the relationship between armature current and motor torque. During operation, the winding generates a back electromotive force based on a voltage constant of 0.8 Vs/rad, which the drive must offset to maintain the commanded speed. Short-term load peaks can be handled because the armature accepts up to 200 A. The insulation tolerates a commutated voltage of 170 V without electrical breakdown. These electrical values help determine suitable drive capacity, cable sizing, and protective hardware.

The maximum useful speed is 1200 rpm, providing a broad operating range between holding torque and the highest rotational rate. Acceleration characteristics benefit from a rotor inertia of 0.039 kg·m², which works with the 15.5 ms mechanical time constant to enable smooth speed changes with moderate control gains. The housing has an IP54 protection rating, providing limited protection against dust ingress and protection against splashing water. Full output can be maintained at ambient temperatures up to 45 °C. A thermal time constant of 170 minutes allows the frame and windings to absorb intermittent overloads before their temperatures reach critical levels. This thermal capacity supports cyclic-duty applications in which brief periods of elevated load are separated by lower-load operating intervals.