Product Description:

The MAC90A-0-RD-1-B/110-A-0/J625/S01 belongs to the MAC AC Servo Motors series from Bosch Rexroth Indramat. It is a three-phase servo motor intended for analog drive controllers, where it converts drive current into controlled mechanical motion for positioning or velocity loops in automated machinery. By combining an integrated incremental encoder with a sealed housing, the unit delivers closed-loop feedback while withstanding demanding shop-floor conditions.

This model operates at a nominal speed of 3000 rpm and can handle a peak pulse current of 76 A for rapid acceleration demands. During continuous stall, it produces 3.5 Nm while drawing a standstill current of 11.4 A, which indicates its torque output under static load. The housing meets the IP65 protection class, so dust and water jets do not penetrate the enclosure, and cooling is maintained by natural convection without auxiliary fans. Mechanical interfacing is aided by a centering diameter of 110 mm and a 24 mm shaft equipped with an 8N9 × 3 × 40 mm keyway, and the motor is supplied without a blocking brake to reduce inertial load on vertical axes. The encoder delivers incremental position signals to the analog drive, and the stator winding supports stable current regulation.

A rotor inertia of 0.0020 kg·m² allows fast speed changes without excessive overshoot, and each ampere delivered by the drive produces a torque of 0.34 Nm/A, which supports predictable current response. Thermal behavior is characterized by a 45 min time constant, which allows intermittent overloads before steady-state temperatures are reached. The stator inductance of 3.2 mH pairs with a winding resistance of 0.56 Ω, shaping electrical dynamics and copper losses. These parameters suit analog velocity and position controllers that require predictable response to command changes.