Product Description:

The ADF134D-B05TA3-BS27-A2N1 is a liquid-cooled asynchronous spindle motor manufactured by Bosch Rexroth Indramat within the ADF Main Spindle Motors series. It is intended to provide the primary rotary drive on automated machine tools, where closed-loop operation helps maintain constant speed as the load changes. In spindle service, this supports stable rotation during cutting and other machining processes while helping the drive react to changing process demands.

Dynamic behavior is supported by a balance grade of R DIN ISO 2373, which reduces vibration transferred to the machine structure. Coolant enters through an axial rapid-action coupling, allowing quick connection and disconnection of the cooling circuit. The unit uses flange mounting, and its power conductors exit on Side A with the connector housing located on the top of the frame, which simplifies cable routing in vertical spindle positions. Power reaches the stator windings through a connector identified by type code BS, and that winding code sets the thermal limits for the D-length stator stack. A standard bearing system supports the 134-frame rotor and works with the liquid-cooling path to keep bearing temperatures within the permitted range during operation.

Position feedback is handled by digital servo feedback with an integrated encoder, enabling the drive controller to synchronize spindle speed with toolpath commands. During power-off conditions, motion is restrained by an electrically released holding brake, so external clamping devices are not required for stationary holding. The power interface uses a connector plug that mates directly with Indramat drive cables, and mechanical output is delivered by a plain shaft without a second shaft end on Side B, which suits direct-coupled tool holders. The motor has no shaft seal ring, so coolant leakage from adjacent housings must be avoided. Frame size 134 and length D correspond to the magnetic core used in this motor.