Product Description:

The MAC041B-0-BS-4-E/050-B-0/WI678LV is a compact AC servo motor built by Bosch Rexroth Indramat and supplied as part of the MAC AC Servo Motors series. Intended for analog drive amplifiers, it converts velocity or position commands into controlled shaft rotation for machine tools, handling axes, and packaging modules. The motor incorporates an encoder interface so the drive can close the control loop and keep commanded motion accurate when load conditions change. Its housing follows standard MAC mounting dimensions, matching the footprint used across the family.

Thermal management relies on natural convection, so heat escapes the stator without fans or external ducts. The unit is supplied without a blocking brake, so an external device or drive torque must be used if holding torque is required during power-off. The active magnetic stack uses length code 041, which corresponds to the motor's stack length within the 04 frame range. Overall geometry uses the B frame, matching the flange, pilot, and shaft arrangement used throughout the series. For power wiring, a connector on side B is fitted, keeping the cable exit at the rear in many horizontal installations and simplifying routing inside compact cabinets.

Closed-loop performance can be supported by the tachofeedback incremental or absolute encoder option, which provides either speed-proportional voltage or multi-turn position data. When standard feedback is used, the motor carries an incremental encoder with standard mounting that plugs directly into analog velocity controllers. Classified as a motor for analog drives, it exchanges command and feedback signals through analog voltages or currents rather than digital buses, which suits legacy MAC drive racks. The unit remains within the MAC AC Servo Motors mechanical envelope, preserving the established footprint, mounting pattern, and wiring layout of earlier assemblies.