Product Description:

The MAC041B-0-BS-4-E/050-B-0/WI670LV/S001 is an AC servo motor engineered by Bosch Rexroth Indramat within the MAC AC Servo Motors series. Designed for use with legacy and modern analog drive amplifiers, the unit converts electrical command signals into precise shaft rotation for positioning and speed-regulated tasks in automated machinery. By pairing a magnetic rotor with integrated feedback devices, the motor supports closed-loop control for packaging stations, textile lines, and small material-handling axes. Because the feedback components are integrated into the motor, the assembly remains compact and reduces the number of separate parts mounted on the machine. In retrofit systems, that compatibility helps preserve existing analog control architecture while still providing repeatable servo motion.

The motor uses the motor size B frame with the 041 length code, a combination that balances moderate continuous torque with a compact mounting footprint. Heat produced by copper losses is removed through natural convection, eliminating the need for an integral blower. Power conductors terminate through a keyed connector on side B, allowing the cable to exit parallel to the housing and keeping the mounting area clear. The compact frame can fit machine sections where larger servo housings would interfere with guards, belts, or adjacent mechanisms. Natural cooling also leaves the rear section free of fan hardware, which helps when the motor is installed close to neighboring components.

The unit is configured as a motor for analog drives, making it electrically compatible with voltage-controlled amplifiers that rely on sinusoidal or trapezoidal current loops. It is supplied without a blocking brake, so external holding force is required when the axis must remain fixed after power is removed. Integrated tacho feedback supports velocity regulation, while an incremental encoder with standard mounting supplies high-resolution position signals for interpolation by the amplifier. This arrangement suits applications that need stable motion at steady speed as well as during frequent starts and stops. Because there is no blocking brake, the motor is better suited to axes that do not depend on an internal holding device for standstill.