Product Description:

The MAC90C-1-GD-1-B/110-A-1/I625 is produced by Bosch Rexroth Indramat within the MAC AC Servo Motors series. This motor is designed for analog drives that require precise torque and speed control for machine axes and automated tooling. It can couple directly to a gearbox or load shaft, depending on the machine arrangement. When paired with a compatible analog servo amplifier, the motor supports closed-loop motion in industrial assembly, packaging, and material-processing equipment.

At a nominal shaft speed of 3000 rpm, the motor provides the rated velocity needed for many high-speed automation tasks. At standstill, it can continuously supply 16.0 Nm of torque while drawing a continuous current of 41.3 A, so the selected drive must accommodate the resulting electrical and thermal load. The motor has a torque constant of 0.43 Nm/A, indicating the amount of torque produced for each ampere of commanded current. Its IP65 enclosure protects internal components against dust and low-pressure water jets. A centering diameter of 110 mm supports accurate flange alignment with the connected machine. The stator windings have an inductance of 1.5 mH and a resistance of 0.24 ohms, which affect current ripple and servo response. Heat is removed by a 230 VAC axial blower, and the winding temperature approaches a stable operating level according to a thermal time constant of 45 minutes. The motor maintains its full operating ratings at elevations up to 1000 m above sea level.

For rapid acceleration, the drive can momentarily deliver a peak pulse current of 196 A, allowing torque transients above the continuous operating limit. An integrated brake holds the shaft during power loss with a clamping torque of 6.5 Nm. The brake is released by a 24 VDC control supply, allowing normal shaft rotation after power is restored. Dynamic response is influenced by a rotor inertia of 53 × 10⁻⁴ kg·m², which affects acceleration, deceleration, and load matching. Forced airflow from the axial blower removes heat during repeated operating cycles and helps control winding temperature under changing loads.