Product Description:

The MAC025B-0-ZS-3-E/040-B-1 is an AC servo motor from Bosch Rexroth Indramat’s MAC AC Servo Motors series. Designed for closed-loop motion in machining cells, assembly lines, and print stations, the unit converts analog speed and torque commands into precise rotor movement. When paired with analog drive amplifiers, it delivers the regulated acceleration and deceleration profiles required for synchronized multi-axis operation while preserving compatibility with earlier Rexroth control platforms. Its compact frame and dual-ended shaft layout let it fit low-power positions without sacrificing positional repeatability in tight machine envelopes.

Cooling relies on passive heat transfer through natural convection, eliminating fans and reducing maintenance. Rotor position and velocity are returned to the drive by tacho feedback, supporting fast current loops for smooth speed regulation. Compact dimensions come from the motor length 025 magnetic stack inside the motor size B frame, allowing installation where flange-to-flange distance is limited. A built-in blocking brake secures the shaft whenever the control signal drops, preventing load creep during power loss or emergency stops and helping vertical or indexing axes hold position without external clamps.

Electrical supply enters through a connector fitted on side B, so cabling can exit rearward when the motor is flange mounted. The mechanical layout includes a second shaft end, making it possible to attach auxiliary encoders, handwheels, or cooling fans without disturbing the primary coupling. Classified as a motor for analog drives, the model suits retrofit projects where digital controllers are impractical yet higher dynamic accuracy is still required. This arrangement is useful on compact axes that need rear cable routing and an auxiliary mechanical connection.