Product Description:

The MAC90A-0-RD-4C/110-A-0/WI520/S01 is an AC servo motor produced by Bosch Rexroth Indramat for the MAC AC Servo Motors series. Designed for analog drives, it converts commanded current into precise shaft rotation, providing closed-loop positioning and speed regulation for pick-and-place modules, packaging stations, and automated tooling. Its sealed housing supports direct integration in industrial environments where dust, coolant, and intermittent washdown may be present.

At standstill, the motor can draw a continuous current of 11.4 A, enabling it to deliver a steady shaft torque of 3.5 Nm without exceeding thermal limits. When operated with a compatible analog amplifier, the rotor reaches 3000 rpm under rated load, making it suitable for common gearbox ratios. The torque constant is 0.34 Nm/A, indicating the relationship between phase current and mechanical torque, while the winding inductance of 3.2 mH affects the current response. The copper path has a resistance of 0.56 Ω, which contributes to winding losses during operation. For short cyclic loads, the S6 rating permits 7.0 Nm of intermittent torque. Mounting uses a 130 mm square flange with a 110 mm pilot that centers the motor on the machine interface. A 30 mm shaft with a 50 mm extension connects the motor to couplings or pulleys.

During startup or sudden load changes, the motor can generate a maximum torque of 17.2 Nm, and the drive electronics may command up to 76 A of peak pulse current to reach that output without losing synchronism. The aluminum housing is sealed to IP65, preventing dust and low-pressure water jets from reaching the stator windings during routine machine cleaning. A rotor inertia of 20 × 10⁻⁴ kg·m² balances quick acceleration with torsional stability. The thermal time constant is 45 minutes, allowing the motor to operate for extended periods before accumulated heat requires output derating.