Product Description:

The ADF134D-B35TA0-BS26-A2N3 is a main spindle motor manufactured by Bosch Rexroth Indramat and supplied within the ADF Main Spindle Motors series. As a liquid-cooled asynchronous drive, it is installed in machine-tool spindles to deliver continuous torque while managing heat through an internal coolant jacket. The unit supports digital position loops through an integrated feedback interface, allowing the automation controller to monitor speed and orientation during cutting, drilling, or grinding operations.

The rotor-stator assembly is dynamically balanced to S1 DIN ISO 2373, helping the spindle run at high speed with minimal vibration. Mounting surfaces use flange and foot mounting, so the frame can bolt directly to a housing wall or machine base. Coolant enters through an axial connection with a 1/4-inch thread, ensuring predictable flow across the cooling channels. Power reaches the windings through a connector plug interface, and the supply lines are routed toward side A with the connection housing positioned on top of the stator shell for straightforward cable management. An electrically actuated release holding brake is incorporated; it clamps the shaft when de-energized and releases it only when current is applied, allowing secure tool changes or standstill holding. Standard rolling bearings support the rotor, and the winding code BS indicates the electrical characteristics of the three-phase coils.

Motion data are returned to the drive via digital servo feedback, giving the controller real-time position information without auxiliary encoders. The motor frame size is 134, and the overall assembly uses a liquid-cooled asynchronous motor design that maintains thermal stability during extended duty cycles. A plain shaft transmits torque directly to the tool holder, and there is no second shaft end or front seal ring, so any external sealing must be provided by the spindle cartridge. The stator length code is D, which indicates the active stack height within the series.