Product Description:

The MAC90A-0-ZD-1-B/110-A-0/J1250 is a brushless AC servo motor manufactured by Bosch Rexroth Indramat within the MAC AC Servo Motors series. Classified as a motor for analog drives, it converts commanded current into precise rotary motion in automated presses, packaging stations, and transfer lines. The unit works with drive amplifiers that use analog velocity or torque loops, supplying controlled output for closed-loop positioning and repeatable speed regulation in industrial machinery. This layout supports applications that need stable torque production and straightforward integration with existing analog motion hardware.

The motor uses a 110 mm (j6) centering diameter and a 130 mm flange for face mounting. A 24 mm (k6) keyed shaft transfers torque to couplings and other driven elements. Under rated conditions, it reaches 2000 rpm. At standstill, the electromagnetic system delivers 3.7 Nm with a continuous phase current of 8.1 A. Torque rises in proportion to current at 0.51 Nm/A, which helps the analog drive respond predictably. Copper loss is associated with a winding resistance of 1.85 Ω, and together with the 1.9 mH inductance it shapes the electrical response. Heat is removed through natural convection, so airflow around the housing should remain unobstructed.

For dynamic transients, the drive can deliver up to 53 A in short pulses, allowing rapid acceleration without losing synchronization. Thermal behavior is described by a time constant of 45 min, which shows how gradually the winding temperature approaches steady state during intermittent duty. The housing has an IP65 sealing grade to protect internal parts from dust and water jets on factory floors. A rotor inertia of 0.0020 kg·m² balances quick speed changes with stable load handling during frequent starts and stops. That combination is useful on indexing axes and similar mechanisms that cycle repeatedly through acceleration and deceleration. Installation is permitted up to 1000 m above sea level without derating.