Product Description:

The MAC 071B-0-PS-2-C/095-A-0 is a motor for analog drives built by Bosch Rexroth Indramat for its MAC AC Servo Motors series. This AC servo unit converts drive current into controlled rotary motion for positioning and velocity tasks in packaging machines, handling systems, and general factory automation. By integrating a tachogenerator on the rear shaft, the motor returns real-time speed feedback to its matching analog drive controller, enabling proportional regulation without digital bus hardware.

Under steady thermal conditions, the rotor can supply a continuous stall torque of 4.4 Nm while drawing a steady current of 9.6 A. The torque-to-current constant is 0.460 Nm/A, and this ratio allows the drive to predict output torque from commanded current. Electrical losses are limited by a phase resistance of 0.72 Ω at 20 °C and by a phase inductance of 5.9 mH, which influence current ripple and the bandwidth of the analog amplifier. The built-in tachogenerator produces 0.0143 Vs/rad, giving the controller a proportional voltage signal for velocity loops. Terminals must be wired with conductors of at least 0.75 mm² to meet ampacity and voltage-drop limits.

The motor reaches a nominal shaft speed of 4000 min⁻¹ and allows a peak pulse current of 48 A, permitting rapid acceleration when machine cycles demand it. Rotor inertia of 9.9 × 10⁻⁴ kg·m² balances quick response with mechanical stability, and the housing has an IP65 rating that helps keep dust and wash-down water away from the internal windings. Mechanical interface data include a centering diameter of 95 mm, a shaft diameter of 19 mm, and a mass of 8.8 kg, which simplifies coupling selection. The thermal time constant of 45 minutes indicates how long the frame takes to reach equilibrium after a load change.