Product Description:

Bosch Rexroth Indramat supplies the MAC041A-0-FS-3-E/050-B-1 as part of its MAC AC Servo Motors series. This brushless AC motor is used with analog servo drives to actuate axes that need tightly regulated speed and position in automated machinery. When paired with legacy current-mode amplifiers, the unit closes the velocity loop internally and sends a tachometric signal to the drive. That operating method suits presses, pick-and-place gantries, and small milling spindles that need repeatable motion from a compact motor.

The motor relies on natural convection, so excess heat leaves the housing without fans or liquid cooling. Rotor motion is monitored through tachofeedback and a second shaft end. This arrangement gives the controller a direct DC voltage proportional to speed while reserving one shaft face for mechanical encoders or couplings. Axial build code 041 limits overall length, reducing moment load on host bearings in tightly packed machine sections. Incoming three-phase power lands on a connector on side B, which streamlines wiring in cabinets where the opposite face is inaccessible. Electromagnetic characteristics are governed by winding set FS, matching the resistance and inductance needed for low-voltage analog regulators.

A standard blocking brake is integrated to clamp the shaft whenever the drive disables torque, preventing unintended back-driving on vertical or indexing axes. The frame class of motor size A corresponds to a 40 mm square flange that minimizes weight yet supplies enough torque for light conveyors or feeders. The compact flange also helps the motor fit into assemblies where mounting space is limited. As a motor for analog drives, the unit’s signal levels and dynamic constants align with first-generation Indramat KDV and TDM amplifiers still common in the field. Its dimensions, thermal behavior, and connections follow the MAC AC Servo Motors platform.