D75N/D75NC Series Twin Spindle Milling Head

The Gong Yang D75, D75N, and D75NC Series Twin-Way Angular Heads (Twin Spindle Milling Heads) are engineered to expand dual-directional cutting versatility on vertical machine tools, seamlessly adapting standard equipment to execute opposing horizontal and side-milling operations within a single setup, substantially cutting cycle times and eliminating redundant workpiece re-clamping. Featuring a compact footprint and ergonomic setup, the unit incorporates a 360° graduated dial for swift, precise orientation of the cutting direction, making it an ideal attachment for deep-pocket boring, slot milling, end-face trimming, and bevel chamfering across complex workpieces.

Built for dependable cutting rigidity and prolonged service life, both the spindle shafts and internal transmission gears are precision-machined from high-grade chromium-molybdenum alloy steel, rigorously quenched, hardened, and precision ground to preserve geometric accuracy under heavy cutting loads. Delivering 25 KW of drive power and output torque ratings from 600 to 750 N.m, the series offers operational speeds up to 800 or 2000 RPM across standard #50 spindle tapers and tool diameters up to ψ150 mm. The drive is designed strictly for clockwise (forward) cutting duty—reverse rotation is dedicated exclusively to tapping and counterboring cycles and must never be applied to milling or drilling—ensuring long-term machining precision and operational reliability.