Product Description:

The MAC041B-0-BS-3-E/050-B-0 is a compact AC servo motor produced by Bosch Rexroth Indramat as part of the MAC AC Servo Motors series. As a rotary actuator, it converts electrical commands from analog drive amplifiers into regulated torque and speed for positioning tasks in industrial automation cells. Its compact housing suits material-handling fixtures, light assembly stations, and indexing tables that require precise motion with moderate power. The motor works with a compatible drive amplifier that regulates current in response to command and feedback signals. This arrangement supports controlled acceleration, steady rotation, and accurate stopping during repetitive machine cycles.

Heat is removed through natural convection, eliminating the need for an external fan and reducing the number of moving components. The motor has no blocking brake, so an external holding device is required when a load must remain secured after motor torque is removed. The unit has a frame size of 041 and a frame length of B, providing a compact mechanical envelope for installations with limited space. Power wiring uses a connector located on side B of the housing, allowing the cable to be routed away from nearby machine components. The connector arrangement also provides a detachable electrical interface instead of requiring conductors to terminate inside a separate terminal box. Mounting space should account for the connector body and the cable bend near the housing.

Closed-loop speed regulation is supported by integrated tacho feedback, which sends an analog velocity signal to the connected drive amplifier. The motor also includes a second shaft end that can accommodate an external feedback device or another compatible mechanical attachment when the application requires one. The unit is configured as a motor for analog drives, making it compatible with current-controlled amplifiers that process tachometer voltage for speed regulation. The feedback signal allows the amplifier to correct speed changes caused by variations in the mechanical load. Proper coupling alignment is important when the additional shaft end is used because excessive radial loading can affect the attached device and motor bearings. The absence of digital position feedback means that applications requiring direct position measurement must use suitable external feedback hardware and a compatible control arrangement.