Product Description:

The ADF134B-B05TC3-BS00-A2N1 is a main spindle drive manufactured by Bosch Rexroth Indramat and assigned to the ADF Main Spindle Motors series. As a liquid-cooled asynchronous unit, it is intended for continuous operation on high-speed machining centers where stable temperature and sustained torque are critical. The motor installs directly on the machine headstock, eliminating intermediate belt stages and thereby improving mechanical stiffness, surface finish, and positional repeatability in industrial CNC automation.

Its rotor is balanced to the R DIN ISO 2373 quality grade, which minimizes residual vibration and allows higher spindle speeds without damaging bearings. The active diameter corresponds to motor size 134, while length code B keeps the axial envelope compact enough for retrofits. A face-mounted flange mounting interface centers the stator on the machine frame and transmits cutting forces without shims. Liquid enters through an axial rapid-action coupling, permitting tool-free hose exchange during service. Standard bearings support radial and axial loads, and the power leads exit toward Side A through a top-mounted housing for quick access.

The motor is supplied without a holding brake, and position feedback must be provided by an external sensor because it does not include an encoder unit. The stator windings are terminated inside a junction box, keeping high-frequency switching noise inside a grounded enclosure. Line routing is eased by the plain shaft, which accepts standard clamping tools. The design omits a shaft-seal ring and any second shaft end, reducing potential coolant ingress points. The motor uses winding code BS, which matches impedance and thermal constants to Indramat spindle inverters for continuous duty on metal-cutting equipment.