Product Description:

The ADF104B-B05TB1-DS07-A2N2 is a main spindle unit produced by Bosch Rexroth Indramat for the ADF Main Spindle Motors series. Classified as a liquid-cooled asynchronous motor, it drives machine-tool spindles in automated milling, drilling, and turning stations where continuous torque, smooth acceleration, and precise speed regulation are required. Liquid circulation through the stator jacket removes heat so the drive inverter can apply high current without exceeding thermal limits during long machining cycles. This cooling method also helps the spindle maintain stable operation when cutting loads change during repeated starts, stops, and speed adjustments.

Its frame corresponds to motor size 104 with length code B, giving it proportions that fit tightly packed headstocks. Dynamic balance to class S DIN ISO 2373 minimizes residual vibration, which helps protect tool edges and improve workpiece finish at high speed. Machine integration uses flange mounting, and power leads connect through a sealed connector plug. The rotor runs on standard bearings, while coolant enters through standard connection ports used across the series. Position and speed are monitored by digital servo feedback with an integrated encoder, allowing closed-loop control without external tachometers. Because a shaft seal ring is omitted, the surrounding spindle assembly must provide external protection against cutting fluid and chips.

The electrical interface is positioned on the top of the housing, and the cable exit faces side B, which can simplify routing in vertical machining centers. Winding code DS matches the electrical characteristics expected by compatible Indramat drives. This model is supplied without a holding brake, so spindle clamping must be handled by an external mechanical system during tool changes or when power is removed. Torque is transmitted through a plain shaft, and there is no second shaft end on the B-side, which reduces overhung accessory loads and supports compact spindle-head layouts.