Product Description:

The MAC112D-ED-2-C/180-A-0/S011 is a brushless AC servo motor manufactured by Bosch Rexroth Indramat within the MAC AC Servo Motors series. As a motor intended for analog drives, it converts command voltages from legacy servo amplifiers into tightly regulated shaft rotation for machine tools, material-handling gantries, and general-purpose automation cells. Electrical commutation and feedback devices in the MAC platform let the drive regulate current and flux so that commanded torque is reproduced with minimal lag or overshoot across the working speed range.

At standstill, the motor can deliver 35 Nm of continuous torque, and this value is sustained without additional cooling because the stator windings are rated for 63 A of continuous current at standstill. When motion is commanded, the rotor can reach its nominal speed of 3000 rpm, allowing the connected axis to maintain high throughput while still benefiting from servo accuracy. The magnetic circuit produces torque in proportion to current, and the proportionality factor is the 0.620 Nm/A torque constant measured at 20 °C, so drive electronics can predict output force directly from phase current feedback. Copper losses are reduced by the low phase resistance of 0.070 Ω at 20 °C, which helps limit heat generation during sustained duty cycles.

For short acceleration bursts, the drive can command up to 312 A of peak pulse current, enabling rapid load changes without loss of synchronism. Once energized, the large frame, classified as size 112 with a D length code, stores heat slowly, and its thermal mass is reflected in a 120 min thermal time constant, so temperature sensors react gradually and allow extended overload intervals before winding limits are reached. The electromagnetic system also presents a 1.3 mH winding inductance, which filters current ripple and works with the amplifier’s PWM frequency to keep torque ripple low. The motor is compatible with analog velocity or torque loops that require smooth transients and high momentary power density.