Product Description:

The MAC041B-0-QS-4-E/050-B-0/WI651LV is an AC servo motor built by Bosch Rexroth Indramat as part of the MAC AC Servo Motors series. It converts ±10 V velocity or torque commands from an analog drive into precisely regulated shaft rotation for light-to-medium-duty machine axes. Typical tasks include moving small tooling heads, positioning fixtures, or advancing product carriers in assembly cells where quick reversals and tight speed control are necessary. Acting as the electromechanical link between the drive amplifier and the load, it supplies proportional torque while reporting position through its integrated feedback devices.

The motor relies on natural convection cooling, allowing heat to dissipate through the housing without external fans or liquid circuits. It is supplied without a blocking brake, so any static holding force must come from the drive’s current control or from external clamping hardware. Frame coding indicates a 041 stator length and a B frame diameter, which establish the overall package size and mounting hole pattern. Power conductors terminate at a single plug configured as a connector on side B. This orientation helps keep motor and cabinet wiring on the same machine face when installation space is limited.

Feedback flexibility is provided by support for tachofeedback, incremental encoder, or absolute encoder devices, permitting either velocity-based or position-based control loops. For applications that favor straightforward wiring, an incremental encoder with standard mounting can be specified. The unit is classified as a motor for analog drives, which means it pairs with earlier Rexroth drive generations that use analog command signals rather than digital fieldbus messages. The mounting pattern remains consistent for motors with the same frame code, which helps preserve bracket and coupling alignment.