Product Description:

Bosch Rexroth Indramat manufactures the MAC071C-0-JS-3-C/095-B-1 in its MAC AC Servo Motors series. Designed as a motor for analog drives, it converts voltage-controlled current from classic servo amplifiers into regulated torque and speed for machine tools, handling modules, and packaging stations. The model provides an electromechanical interface between the motion controller and the load, allowing repeatable angular positioning while fitting within the dimensional envelope expected by older Indramat installations. It is suited to legacy motion systems that rely on established analog control architecture instead of fully digital drive communication. This makes it useful in retrofit applications where existing amplifiers and machine layouts are kept in service.

The integrated blocking brake delivers 3 Nm of holding torque, so vertical or suspended loads remain stationary once power is removed. A centering flange of 95 mm aligns the housing with mounting plates to help minimize radial runout during installation. Heat is removed through natural convection, which eliminates the need for an external blower where cabinet airflow is limited. Under nominal excitation, the rotor reaches 2000 rpm, a speed that matches many gear ratios used in indexing tables and lead screws. The main power leads exit through a keyed circular connector on side B, which keeps the cable bundle away from the driven machine face. This cable direction also leaves more space at the mounting face for couplings, guards, or gearbox hardware.

The motor size code 071 indicates the frame size, and the length designation C indicates the active stack length used for this model. Winding code JS identifies the electrical characteristics required by analog drives that use standard Indramat voltage patterns. Tacho feedback is produced at 3 V/1000 rpm, permitting straightforward speed regulation with legacy velocity-loop cards. This feedback arrangement lets external control electronics monitor motor speed without requiring digital encoder processing. The tachogenerator is mounted on the second shaft end, which keeps the speed signal mechanically linked to rotor rotation during operation.