Product Description:

The ADF104B-B05TB1-BS06-D2N1 main spindle motor is produced by Bosch Rexroth Indramat for the ADF Main Spindle Motors series. It is a liquid-cooled asynchronous motor intended to drive machine-tool spindles and other continuous-duty axes in industrial automation lines where stable speed, repeatable torque, and steady thermal behavior are required. Through flange mounting and integrated coolant passages, the unit supplies constant torque at elevated speeds, making it suited for precision metal-cutting and forming equipment. This arrangement supports long operating cycles in applications where spindle performance must remain consistent as load and speed change.

The rotor is ground and balanced to R DIN ISO 2373 quality, so vibration transmitted to the machine frame remains within limits for high-speed spindles. Standard rolling bearings support the shaft, and the B-length housing works with the 104 frame size to set the motor’s overall power density. Position and speed data are returned through Digital servo feedback, allowing the drive controller to close control loops without external encoders. Because the unit is supplied without a holding brake, the axis must rely on drive torque or external clamps for standstill security. Mechanical attachment is through flange mounting, which centers the stator against the machine headstock and helps keep alignment accurate.

Liquid coolant enters and leaves through the standard connection points to maintain winding temperature, while a shaft seal ring helps prevent leakage toward the bearings. Electrical power is routed on side B, where a top-mounted housing accepts a connector interface; this orientation keeps cables clear of the tooling envelope and reduces interference with adjacent machine components. Torque is transmitted by a shaft with keyway that is balanced with the full key, which avoids additional field balancing after coupling. The single-ended configuration on side A means there is no second shaft end on side B. The electromagnetic data set coded as BS identifies the winding resistance and inductance used by the Indramat drive.