MAC090B-0-PD-4-C/110-A-1/WA612XX

The Bosch Rexroth Indramat MAC090B-0-PD-4-C/110-A-1/WA612XX servo motor from the MAC AC Servo Motors series is a high-performance, brushless permanent magnet motor designed for precision motion control in automated systems. Featuring a compact Motor Size of 90 and a Motor Length code B, this unit delivers robust torque output through Natural Convection cooling, eliminating the need for external fans. The motor incorporates onboard electronics and a permanent magnet rotor, providing low maintenance operation by removing brushes from the design. A power connector on Side A simplifies wiring, while the standard PD winding pattern ensures exceptionally smooth running characteristics. Integrated feedback is provided via a B encoder, and a standard blocking brake enables rapid stops and secure holding.

The MAC090B-0-PD-4-C/110-A-1/WA612XX offers a well-rounded set of technical specifications to meet demanding industrial requirements. Continuous performance is rated at 11.9 A standstill current delivering 7.2 Nm continuous torque, with overload capability up to 17.4 A and 10.5 Nm at peak conditions. The windings exhibit an inductance of 5.1 mH and a resistance of 0.97 Ω at 20 °C, yielding a torque constant of 0.67 Nm/A. Thermal characteristics include a thermal time constant of 60 minutes (45 minutes for peak) to manage heat buildup. The rotor’s moment of inertia is precisely defined at 36 × 10⁻⁴ kg·m², supporting accurate dynamic response, while the total mass of the unit is 18 kg. Peak pulse current capacity reaches 86 A, and nominal speed is specified at 2000 min⁻¹ for balanced velocity and torque.

Operationally, the motor supports closed-loop control via its integrated feedback system, directly interfacing with analog servo drives for real-time adjustments. The standard blocking brake exerts a holding torque of 60 Nm, instantly halting rotor motion and safely dissipating inertia-related heat. The absolute or incremental encoder feedback enables precise position, velocity, and direction measurement, enhancing control resolution. The PD winding design ensures minimal torque ripple, reducing vibration and acoustic noise during acceleration and deceleration phases. Flexible mounting in any orientation and a centering diameter of 110 mm (customizable) facilitate seamless integration into diverse machinery layouts.

System integration is optimized for analog drive platforms, requiring no additional converter modules, and supports a wide range of control algorithms for PID, vector, and field-oriented control schemes. The MAC090B-0-PD-4-C/110-A-1/WA612XX is ideally suited for applications including robotic manipulators, CNC machine tools, packaging lines, and precision assembly systems. Comprehensive compatibility with Bosch Rexroth Indramat controllers and amplifiers ensures consistent performance and simplifies maintenance. This combination of high torque density, precise feedback, and reliable braking makes it a versatile choice for advanced automation installations.