Product Description:

The MAC041B-0-BS-2-E is an AC servo motor engineered by Bosch Rexroth Indramat for the MAC AC Servo Motors series. It delivers precisely controlled torque and speed to light-to-medium automation axes, enabling accurate positioning in assembly stations, material-handling modules, and compact machine tools. The motor’s sealed housing conducts internally generated heat to the surrounding air, allowing cabinet-free mounting close to moving mechanisms while maintaining acceptable winding temperature. This arrangement also supports compact machine layouts that do not have room for separate cooling hardware around the motor body.

Heat removal relies on natural convection, so the motor should be installed where unobstructed airflow can reach the fins; no external blower or liquid circuit is required. The drive interface is analog, meaning command signals are transmitted as continuous voltages that the controller interprets for torque demand. Under rated conditions, the rotor reaches 6000 rpm, a speed suitable for high-cycle pick-and-place heads or fine spindle work. A torque constant of 0.310 Nm/A links phase current to produced shaft torque, allowing straightforward current-based control calculations. System response during acceleration is influenced by the rotor’s inertia of 1.30 × 10⁻⁴ kg·m², a value low enough to permit fast reversals without large surge currents. Speed feedback is provided through tacho feedback, which generates a proportional voltage that the controller uses to close the velocity loop in real time.

The motor size is 041, and the stator frame uses the medium B size, which helps it fit existing MAC installations that use the same mechanical envelope. The tacho generator delivers 0.75 V/1000 rpm, giving the controller a predictable scaling factor for speed monitoring across the operating range. This combination helps match the motor, drive, and load inertia without oversizing components. It also helps shorten settling times and improve repeatability in indexing, labeling, and small-format routing stations.