Product Description:

The ADF134B-B05TA0-BS17-A2N1 is an asynchronous main spindle motor engineered by Bosch Rexroth Indramat for the ADF Main Spindle Motors series. Intended for CNC lathes, milling machines, and grinding centers, it converts drive current into precise rotary motion that the controller uses to regulate cutting speed and feed. By using liquid cooling, the unit maintains stable thermal conditions so continuous-duty machining operations can proceed without torque loss during long production cycles. This operating style makes it suitable for spindle applications where steady speed and repeatable motion are important to cut quality.

The frame size of 134 denotes a large stator diameter that supports higher copper fill and improved heat transfer. Stack length code B provides a mid-range active length, giving a balance between peak torque capability and installation depth. Rotor balance meets quality grade R DIN ISO 2373, which helps reduce vibration that could affect surface finish at high spindle speeds. A holding brake rated at 100 Nm keeps tooling stationary during tool changes or emergency stops. The motor is classified as a liquid-cooled asynchronous motor and uses forced coolant flow across the stator jacket. This cooling method supports stable output in enclosed spindle housings where airflow is limited.

The cooling circuit attaches through an axial connection with a 1/4-inch thread port, permitting straight-through hose routing that keeps the coolant path easy to arrange. Mechanical integration is handled by flange mounting, which provides a rigid face interface that aligns the motor with the headstock bore. Torque is delivered through a plain shaft, giving the machine builder flexibility to use shrink discs, collets, or custom couplings. For cabling, the power connector faces side A, and the top-mounted housing helps keep power leads separated from coolant lines and sensor wiring. This layout supports orderly routing in compact machine enclosures where spindle space is limited.