Product Description:

The MAC025C-0-QS-3-E/040-B-1 servo unit is produced by Bosch Rexroth Indramat and belongs to the MAC AC Servo Motors series. As a motor for analog drives, it converts command signals from an external amplifier into controlled rotary motion for positioning tables, pick-and-place heads, and indexing wheels. This arrangement supports repeatable closed-loop motion with responsive speed changes in compact machine layouts. It is intended for equipment that needs consistent positioning, moderate torque, and smooth response during frequent starts, stops, and speed changes. The compact housing also helps when nearby components limit mounting space.

The motor has size C and a stator stack length code of 025, which provide the magnetic volume needed for moderate continuous torque. Heat is removed by natural convection, so the housing operates without added fans or liquid-cooling hardware. The motor includes a standard holding brake that clamps the shaft when control power is removed, which helps prevent unintended motion on vertical axes. Power reaches the stator through a connector on side B, which can simplify cable routing when the motor is mounted against a machine plate. This cooling method also keeps the exterior free of separate airflow attachments.

Position feedback is provided through tacho feedback with a second shaft end, so the analog controller receives continuous speed information during operation. The tachogenerator supplies the velocity signal used by the amplifier, while the auxiliary shaft end can accommodate an additional mechanical connection when the application requires it. This feedback arrangement suits analog control loops that rely on continuous speed information rather than digital encoder communication. Passive cooling keeps the housing free of external ducting, which is useful where lower airborne contamination and simpler surrounding hardware are preferred.