Product Description:

The ADF104B-B05TA1-BS06-A2N2 main spindle motor is manufactured by Bosch Rexroth Indramat for the ADF Main Spindle Motors series. As a liquid-cooled asynchronous motor, it drives machine-tool spindles that require continuous high torque while keeping stator temperature stable. Its construction allows a compact spindle power source to be integrated directly into machining centers, transfer lines, or grinding heads without external drive shafts. An internal coolant jacket removes heat during high-duty automated production.

The motor attaches to the machine frame through flange mounting, which centers the stator and transmits cutting forces without separate brackets. Electrical feedback is provided by digital servo feedback, allowing the drive controller to monitor position data for closed-loop speed control. Dynamic balance is graded at S DIN ISO 2373, so vibration remains within spindle limits at maximum speed. Power conductors exit through a connector plug placed on the top of the housing and routed to Side A, which helps reduce cable loops in the enclosure. The connection style is standard, and the power terminals share the housing with the coolant fittings. Because the design is delivered without a holding brake, the machine tool must rely on drive torque or external clamps when the axis is idle. Standard bearings support radial loads, and no second shaft end is supplied on the B-side.

The motor has a size of 104 and a length code of B, giving it a stator diameter and active core depth suited for medium-power spindle duty. A plain shaft transfers torque directly to the machine toolholder without keyways. The assembly is supplied without a shaft seal ring, so it should be installed where splash cannot enter the bearing gap. Internal conductors follow winding code BS, which matches the electrical characteristics expected by compatible ADF drive modules. This winding selection keeps current limits, acceleration behavior, and coolant load consistent during operation.