Product Description:

The MAC90B-0-JD-1-B/110-A-0/I-625/S01 is a servo motor produced by Bosch Rexroth Indramat within the MAC AC Servo Motors series. It is intended for analog drive systems where closed-loop torque and speed control are required. Operating without a blocking brake, the motor relies on external holding methods when power is removed, and its natural-convection cooling lets it run in cabinets that lack forced airflow.

The mechanical interface is defined by a centering diameter of 110 mm, allowing direct alignment to compatible gearboxes or machine flanges. During rated operation the rotor turns at a nominal speed of 3000 min⁻¹, and at standstill it can deliver a continuous torque of 6.7 Nm while drawing a continuous current of 18.2 A. Torque production scales linearly with current because the winding set has a torque constant of 0.41 Nm/A; this simplifies drive tuning because commanded current corresponds directly to shaft torque. The 36 × 10⁻⁴ kg·m² rotor inertia balances quick acceleration with smooth running, and the side-A power connector orients cables away from adjacent axes.

Short duty cycles can be supported because the windings tolerate a peak pulse current of 137 A for rapid acceleration. Electrical dynamics are shaped by a winding inductance of 2.0 mH, which limits di/dt and filters high-frequency inverter ripple, while a winding resistance of 0.38 Ω determines copper loss at load. Thermal behavior is characterized by a time constant of 60 min, so the housing temperature changes slowly under varying duty cycles. The enclosure carries a protection rating of IP65, keeping dust and water jets out at installation heights up to 1000 m. Together these attributes let the motor deliver repeatable performance in conveyors, material-handling gantries, and indexing tables without additional cooling hardware.