Product Description:

The MAC041B-0-BS-3-E belongs to the MAC AC Servo Motors series from Bosch Rexroth Indramat. It is a motor for analog drives that uses electronic commutation and permanent-magnet excitation to generate controlled rotary motion in automated machinery. The design fits the compact size B frame with length code 041, giving machine builders a lightweight servo unit for high-speed positioning tasks in packaging, handling, and small machining axes. Because the rotor uses permanent magnets, the motor can respond quickly to drive commands during repeated start-and-stop motion.

During continuous operation the motor can deliver 1.35 Nm while drawing a steady current of 4.40 A. This torque-to-current relationship matches its torque constant of 0.310 Nm/A, so the connected drive can estimate load response with predictable current demand. Rated mechanical output is achieved at 6000 rpm, a speed supported by the low-loss permanent-magnet rotor. An enclosure rated IP65 helps keep dust and low-pressure water jets away from the internal windings when the motor is mounted on open machine frames. Electronic commutation eliminates brush wear, and the motor supports any mounting orientation, which simplifies placement in tight machine layouts. Size B dimensions and the open air path around the stator let heat move outward without forced airflow.

The rotor’s mass moment of inertia is 1.30×10⁻⁴ kg·m², so acceleration remains responsive without demanding excessive current from the drive. Integrated tacho feedback on the second shaft end generates 0.75 V/1000 rpm, giving analog speed loops a direct velocity signal. This arrangement lets the drive monitor motor speed without an added external sensor. Heat removal relies on natural convection, so the installation altitude must not exceed 1000 m to maintain the intended temperature rise. The low inertia also helps the axis change speed quickly during short indexing moves and frequent reversals.