Product Description:

The MAC041B-0-BS-4-E/050-A-1/WI678LV is an AC servo motor built by Bosch Rexroth Indramat within the MAC AC Servo Motors series. It acts as a rotary actuator that converts drive current into controlled torque for positioning and speed regulation on automated axes such as pick-and-place heads, feed rollers, and similar compact machine stations. By linking directly to analog amplifiers, the unit provides closed-loop motion so machine coordinates track command voltages throughout repetitive production cycles, and its compact frame lets it mount inside cabinets or directly on moving carriages where moving mass must be kept low.

The motor includes a blocking brake supplied in standard execution, so the shaft can be clamped whenever the drive commands a stop, preventing back-driving on vertical or cantilevered loads. Heat generated by the windings is dissipated through natural convection, eliminating the need for external fans or liquid circuits and allowing installation in enclosed spaces. The motor has a frame size of 041 and a mechanical length of B, giving it a compact housing for light-duty servo axes with limited installation space. Power and protective-earth conductors terminate through a connector on side A, which helps reduce wiring bends inside a tight machine envelope.

The feedback hardware supports tacho feedback, which provides an analog voltage proportional to speed while also supporting signal processing for closed-loop control. When position is handled by legacy counters, an incremental encoder with standard mounting can be used, and its square-wave outputs synchronize directly with analog amplifiers. Where axis recovery after power loss is important, a non-volatile absolute encoder may be installed without changing the motor’s external dimensions. Because the unit is classified as a motor for analog drives, each feedback arrangement supplies the reference and commutation signals expected by conventional servo controllers used in older motion systems.