Product Description:

The MAC025B-0-ZS-2-E/040-C-0 is an AC servo motor produced by Bosch Rexroth Indramat within the MAC AC Servo Motors series. Designed for analog drives, it converts controlled current from a position or velocity loop into mechanical rotation. The compact 025 length and B frame size fit tight assemblies, while the B05 flange mounting permits direct coupling to precision gearheads or belt pulleys. In typical automation cells, the unit delivers rapid, repeatable motion for pick-and-place devices, small spindle axes, or feed rolls that operate with analog command signals.

Its continuous shaft output is rated at 0.60 Nm of continuous torque, sustained when the winding draws 2.80 A of continuous current. At that operating point, the rotor can spin steadily at a rated speed of 10000 rpm, enabling high surface velocities on small-diameter tools or disks. A magnetic design with a torque constant of 0.220 Nm/A makes current response predictable because each ampere produces a consistent torque increase. The laminated core keeps moving mass low, and the rotor’s moment of inertia is only 0.32 kg·cm², so velocity reversals occur with limited drive stress and minimal following error.

For transient moves, the motor tolerates 1.20 Nm of short-duration torque, yet its thermal profile assumes a 25% duty factor, meaning continuous full-load periods must be interrupted with rest to prevent overheating. Heat is removed solely by natural convection, eliminating the need for external blowers and allowing use inside sealed enclosures. Speed feedback arrives through a tacho generator with a tacho constant of 0.75 V/1000 rpm, giving analog drives proportional voltage for closed-loop control. Because the motor has no blocking brake, rapid stop requirements must be handled by the drive or by external holding mechanisms.