Product Description:

The ADF134C-B05TA0-BS07-A2N1/S032 main spindle unit is a liquid-cooled asynchronous motor built by Bosch Rexroth Indramat and supplied under the ADF Main Spindle Motors series. Designed for high-speed cutting centers and grinding machines, this motor acts as the central spindle, supplying constant torque and speed under closed-loop control in industrial automation lines. Its size 134 frame and compact housing allow integration into medium-power spindles while preserving the internal coolant passages needed for sustained duty. This makes the unit suitable for compact spindle cartridges where space around the motor body is limited.

The rotor is dynamically balanced to the R DIN ISO 2373 balance grade, minimizing vibration at high speeds. A length C housing is sealed for liquid circulation and mates to the machine frame through flange mounting for rigid alignment. Process heat leaves through an axial 1/4" coolant connector, limiting thermal drift during long milling cycles. Position data returns to the inverter through digital servo feedback, so no external resolver is needed. Because the unit is supplied without a holding brake, braking torque must come from the drive or an external stop. The bearing arrangement supports continuous spindle operation under normal industrial duty.

Electrical power is fed through a top-mounted power connector housing, and the conductors exit the stator toward Side A, simplifying cable routing inside vertical headstocks. The connector-and-plug interface avoids hard-wiring and keeps installation cleaner in enclosed spindle assemblies. A plain shaft is supplied without a keyway, and the design omits a second shaft end on side B to support direct-drawbar tool clamping. The motor ships with no shaft seal ring, so coolant and chips must be kept away from the bearing seat. The BS winding code sets the copper cross-section and insulation layout for this frame, while the bearing arrangement helps maintain stable running behavior under load.