Product Description:

The ADF104D-B05TA1-AS06-C2N2 is a main-spindle unit within the ADF Main Spindle Motors series manufactured by Bosch Rexroth Indramat. Designed for integration in CNC machining centers and other automated tooling stations, this motor supplies continuous rotary power. Its internal coolant passages stabilize winding temperature during prolonged metal-cutting or grinding cycles. This supports steady spindle operation during long production runs.

The motor is classified as a liquid-cooled asynchronous motor, so stator losses are removed by circulating coolant rather than ambient airflow. A flange mounting interface lets the housing bolt directly to the machine frame, which minimizes alignment error between the spindle and the workpiece. Position data are returned through digital servo feedback; this closed-loop signal allows a drive controller to regulate spindle speed precisely at any programmed set point. The rotor is built for a plain shaft connection, eliminating keys or splines that could introduce imbalance at high revolutions. Electrical behavior follows the AS winding code, which matches standard Indramat drive ratings.

Operational stability is improved by a balance grade of S DIN ISO 2373, which limits residual vibration when the machine accelerates or decelerates. Braking torque is supplied externally because the motor is shipped without a holding brake, which reduces mass on the shaft for faster ramp times. Power conductors exit the stator housing on side A, and the connector sits on the top of the frame to simplify cable runs inside a vertical spindle column. A shaft seal ring is present to retain lubricant, and the design omits a second shaft end on side B. The motor uses standard bearings and a standard coolant connection, supporting axial loads in one direction without additional mechanical overhang at the drive end.