Product Description:

The MAC025B-0-ZS-4-E/040-B-0 is a compact AC servo motor manufactured by Bosch Rexroth Indramat as part of the MAC AC Servo Motors series. It is intended for precise velocity and position control when paired with analog drive amplifiers in automated machinery such as small pick-and-place stations or indexing tables. By converting electrical commands from the drive into mechanical rotation, the unit supports closed-loop motion tasks that demand accurate response without the complexity of larger power stages.

This motor relies on natural convection, so the housing surface alone dissipates heat. This eliminates the need for external blowers or liquid channels in low-to-moderate duty cycles. The rotor-stator assembly uses motor length code 025, which gives a short axial package that fits in constrained mounting envelopes. The frame uses motor size B, which is a diameter class commonly used with 40 mm shaft heights. For speed feedback, the design integrates tacho feedback, which produces an analog voltage proportional to speed, and it can be supplemented by an incremental encoder to generate digital pulses for fine motion interpolation.

Where higher absolute positioning accuracy is required, an optional absolute encoder can replace the incremental device to deliver single-turn position data without homing at power-up. The motor is supplied without a blocking brake, so axis holding torque must come from the drive or an external mechanical lock during power-off periods. Power conductors are routed through a connector on side B, simplifying cable layouts when the back of the motor faces the cabinet wall. Because it is a motor for analog drives, the current loop is closed inside the external amplifier, allowing straightforward substitution in existing analog control platforms that already issue ±10 V command signals.