MAC093B-1-OS-4-C/110-A-1/WA612XX

The MAC093B-1-OS-4-C/110-A-1/WA612XX from Bosch Rexroth Indramat is a high-performance unit in the MAC AC Servo Motors family, built on a 093B frame with an OS-type winding. This integrated permanent magnet motor delivers a nominal motor speed of 2000 min^-1 and sustains a continuous current at standstill of 18 A (25 A peak), yielding a continuous torque at standstill of 14.5 Nm (20.0 Nm peak). Its compact design and surface cooled construction ensure efficient heat dissipation, while a mass of 16.5 kg supports robust industrial applications. The motor’s rotor moment of inertia of 29 x 10^-4 kg·m^2 and a torque constant at 20 °C of 0.831 Nm/A enable precise torque control under dynamic loads.

Electrical characteristics are engineered for stability: windings exhibit a resistance at 20 °C of 0.625 Ω and an inductance of 9 mH, balancing current response with minimal electrical noise. The thermal time constant of 50 minutes (45 minutes for peak duty) affords predictable temperature rises under continuous operation. With a maximum peak of pulse current of 89 A, the drive can accommodate short-term overloads without risking thermal damage. The motor’s inherent sensitivity to inertia, lead length, and power quality demands careful configuration of full-load amps, base-speed no-load amps, and voltage settings in the drive controller.

Two encoder options—incremental and absolute—expand control capabilities: the incremental encoder outputs quadrature signals for direction and speed feedback, while the absolute encoder retains position data through power cycles. A standard blocking brake offers reliable holding torque when the motor is de-energized, enhancing safety in vertical or pause-critical axes. Together, these features make the MAC093B-1-OS-4-C/110-A-1/WA612XX an ideal choice for precision positioning, machine tool feeds, and automated assembly operations where accuracy and uptime are paramount.