Product Description:

The MAC90A-0-RD-4C/130-A-0/WI52Q/S011 is an AC servo motor produced by Bosch Rexroth Indramat in the MAC AC Servo Motors series. It is specified as a motor for analog drives, supplying tightly regulated torque to conventional voltage- or current-loop amplifiers used in industrial positioning tables, pick-and-place axes, and packaging stations. The frame uses a 130 mm mounting pilot that aligns the stator housing with gearboxes or mechanical adapters typical of the MAC platform.

Under continuous load, the motor develops a stall torque of 3.5 Nm while drawing a steady line current of 11.4 A. These two values indicate the sustained mechanical output available to hold a load without rotor movement. When the shaft is energized up to its nominal speed of 3000 rpm, the drive maintains motion with a motor phase current of 9.3 A against a phase resistance of 0.56 Ω, so copper losses remain predictable for the analog controller. Short acceleration bursts are supported by a peak pulse current of 76 A, and each ampere delivered to the windings produces torque according to a constant of 0.34 Nm/A. Cabling to the terminals must have a cross-sectional area of at least 1.0 mm² to prevent excessive voltage drop.

Heat generated by these electrical losses is removed through natural convection, and a thermal time constant of 45 minutes causes internal temperatures to respond gradually to load and ambient changes. The motor mass of 12.5 kg adds thermal capacity and dampens vibration, while the rotor moment of inertia of 20 × 10⁻⁴ kg·m² balances quick response with stable speed regulation. Position and velocity feedback are supplied by a tachogenerator coupled with a mounted encoder, giving the analog amplifier incremental position data and a speed reference. The winding set has an inductance of 3.2 mH, storing energy that smooths current transients during commutation.