Hyundai WIA KH50G

The Hyundai WIA KH50G is a heavy-duty 500 mm pallet horizontal machining center built for aggressive cutting in steel, cast iron, and other ferrous materials. Unlike higher-speed HMCs in the Hyundai WIA lineup, the KH50G uses a gear-driven two-step spindle delivering an exceptional 901 Nm (665 ft-lbf) of torque at just 4,500 RPM — making it the torque leader in the KH series for shops that prioritize material removal rate over spindle speed.

The 500 x 500 mm (19.7 x 19.7 in) pallet with 760/705/650 mm (29.9/27.8/25.6 in) X/Y/Z travels places the KH50G firmly in the mid-size HMC class. The 18.5/15 kW (25/20 hp) spindle with BT50 taper and two-step gearbox is designed for the low-speed, high-torque cutting regimes demanded by heavy roughing of cast iron engine blocks, pump bodies, and steel structural components. The box guideway construction further reinforces this heavy-cutting mission, providing superior vibration damping compared to linear roller guides at the expense of rapid traverse speed.

The 40-tool ATC (expandable to 120) provides adequate tooling capacity for complex multi-face programs, with 11-second chip-to-chip time. The two-pallet shuttle-type APC keeps spindle utilization high with 26-second pallet swap time. Rapids of 20/20/20 m/min reflect the box guideway design's emphasis on rigidity over positioning speed — a deliberate engineering trade-off for shops where heavy cutting performance matters more than rapid positioning.

At $280,000-$400,000 new, the KH50G competes with the Doosan NHP 5000 and Okuma MA-500HII in the heavy-cutting 500 mm HMC segment. For shops machining predominantly ferrous materials at aggressive depths of cut, the KH50G's geared spindle torque advantage is significant — nearly double the torque of belt-driven alternatives in this pallet class.