N73/N74 Series Deep Boring Right Angle Milling Head

The Gong Yang N73 and N74 Series Deep Boring Right Angle Milling Heads are engineered to extend the axial reach and deep-cavity machining capabilities of machine tools, seamlessly adapting equipment to execute both vertical and cross-milling operations. Fitted with precision-ground spiral bevel gears, the transmission delivers smooth power transfer, minimal backlash, and superior wear resistance. Featuring a compact footprint and ergonomic setup, operators can loosen the locking T-bolts and utilize the integrated 360° graduated index ring to swiftly position the cutter orientation, making it an ideal attachment for planers, plano-millers, and complex machine tools performing deep-cavity boring, top-face milling, and bevel chamfering.

Built for dependable cutting rigidity and extended operational life under demanding duty cycles, both the spindle shaft and drive gearing are precision-machined from high-grade chromium-molybdenum alloy steel, rigorously quenched, hardened, and precision ground. Supporting driving power up to 38 KW and output torque ratings from 850 to 1200 N.m, the series delivers higher rotational performance with operating speeds up to 2000 RPM. The lineup includes two configurations: the N73 (#40 spindle taper, 850 N.m torque) and the N74 (#50 spindle taper, 1200 N.m torque), both accommodating cutter diameters up to ψ150 mm. Operating strictly with clockwise (forward) spindle rotation, the series maintains uncompromising geometric accuracy and long-term mechanical reliability during high-speed deep-boring applications.