Product Description:

The MAC071B-0-FS-4-C/095-B-1/WI574LV is an AC servo motor produced by Bosch Rexroth Indramat within the MAC AC Servo Motors series. Designed for analog drive amplifiers, it converts three-phase electrical power into regulated shaft motion for automated tooling, packaging, or material-handling axes. A built-in tachometer and an incremental encoder in the standard mounting position provide speed and position signals to the drive. A factory-installed blocking brake locks the rotor when power is removed, supporting vertical loads during standby or emergency stops.

Mechanical mounting is set by motor size 071 and a centering diameter of 95 mm, allowing direct seating in standard servo flanges without alignment sleeves. The B-length core provides additional active iron for higher continuous torque while maintaining a compact footprint. Heat generated in the windings is removed by natural convection, so no external blower wiring is required. Under rated excitation, the rotor reaches 2000 rpm, a speed that matches common machine gear ratios. When the brake engages, it can hold up to 3 Nm on the shaft, preventing drift in lifted or pressurized loads. Winding code FS sets the electrical characteristics used for stable current regulation with analog drives. Tacho quality is standard for general-purpose accuracy.

Power and feedback conductors exit through a connector on side B, simplifying cable runs in cabinets where the motor back faces the machine frame. The tachometer delivers 3 V/1000 rpm, providing a linear voltage signal that the drive card uses for speed feedback, while the position loop relies on tacho feedback with an incremental or absolute encoder selected by the drive configuration. The encoder is already aligned in the housing, which reduces setup work and keeps signal reference consistent at startup.