Product Description:

The MAC90B-0-PD-1-B/110-A-0/I625/S01 is a three-phase AC servo motor manufactured by Bosch Rexroth Indramat within the MAC AC Servo Motors series. It is designed for analog drives, so it works with control systems that send ±10 V speed or torque commands. In industrial automation, it converts those commands into precise shaft motion for positioning tables, packaging lines, and similar machinery that require repeatable speed and torque control. This arrangement also suits established machine platforms that continue to use analog servo control rather than newer digital drive networks.

Its nominal operating speed is 2000 rpm, indicating the rotor reaches that speed under rated operating conditions. During continuous duty, each stator phase draws a rated current of 9.7 A, while brief acceleration commands can raise winding current to a peak pulse value of 86 A without exceeding short-term thermal limits. The torque constant is 0.67 Nm/A, so changes in current produce a predictable change in shaft torque. Electrical response is influenced by a stator inductance of 5.1 mH and a winding resistance of 0.97 Ω, which affect how quickly current can build and settle in the motor. Rotor inertia of 36 × 10⁻⁴ kg·m² helps smooth speed changes during load transitions, and the 110 mm pilot diameter helps center the housing on the machine frame.

The winding follows a thermal time constant of 60 min, so temperature rises gradually during sustained loading and short overload periods can be absorbed more easily. An overall mass of 18 kg adds thermal capacity and gives the mounted motor a stable mechanical presence. At zero speed, the motor provides a standstill torque of 7.2 Nm with a standstill current of 11.9 A, which supports controlled holding behavior when the drive commands torque at rest. The enclosure has an IP65 rating that helps protect internal parts from dust and directed water jets. Cooling is done by natural convection, so the motor does not require an external blower for normal heat removal.