Product Description:

The ADF104B-B05TA1-DS06-A2N2 main spindle motor is produced by Bosch Rexroth Indramat within the ADF Main Spindle Motors series. It serves as the rotary drive for machining centers and other automated equipment that require precise speed control at the cutting interface. By integrating directly with drive controllers on a production line, the unit supplies the mechanical output needed for continuous metalworking and material removal processes.

It employs flange mounting, so the housing aligns squarely with the spindle head and helps limit radial runout. The internal position loop relies on digital servo feedback, allowing the controller to supervise speed and phase without external encoders. Classified as a liquid-cooled asynchronous motor, heat is extracted through an external coolant circuit that supports high duty cycles. Rotor balance corresponds to S DIN ISO 2373, limiting vibration and allowing extended bearing life. Electrical power is delivered through a connector/plug interface; that connector sits on the top of the housing and routes toward Side A, a layout that keeps cabling clear of the tooling envelope. A standard rolling element bearing set supports the shaft, and the coolant inlet and outlet follow the manufacturer’s standard connection style for straightforward installation in machine assemblies.

The drive train ends in a plain shaft, so torque is transferred through a shrink fit or collet without keys. For holding force when powered down, the machine must rely on external clamps because the motor is supplied without a holding brake. The motor has motor size 104, while the B length code adds extra active core depth for higher continuous power. Electrical behavior is identified by the DS winding code, which indicates the stator resistance, leakage reactance, and rated current used by compatible inverters. The design omits a shaft seal ring and does not include a second shaft end on Side B, reducing parasitic losses.