Hyundai WIA KBN135

The Hyundai WIA KBN135 is a floor-type CNC horizontal boring machine with a 135 mm (5.3 in) spindle diameter, designed for machining large workpieces that exceed the capacity of standard horizontal machining centers. With 3,000/2,000/1,600 mm (118/78.7/63 in) X/Y/Z travels and an additional 700 mm (27.6 in) W-axis quill extension, the KBN135 provides the reach and flexibility required for machining large castings, weldments, and structural components in heavy industry, energy, and shipbuilding applications.

The three-step gear-driven spindle delivers an extraordinary 3,112/2,617 Nm of torque at 2,000 RPM from 22/18.5 kW (30/25 hp) through a BT50 taper. This extreme torque output is the defining characteristic of the KBN135 — horizontal boring machines exist to apply massive torque through long boring bars into deep bores, large face mills into heavy castings, and precision boring tools into hydraulic valve bodies and turbine housings. The three-step gearbox provides optimal torque at every speed range from threading to heavy boring.

The 2,000 x 1,800 mm (78.7 x 70.9 in) rotary table with 10,000 kg (22,046 lb) load capacity accommodates the large, heavy workpieces that define horizontal boring work. Box guideway construction on all axes provides the rigidity needed when cutting forces are transmitted through extended boring bars and long quill extensions. The 40-tool ATC with 70-second tool change time reflects the heavy tooling typically used on boring machines — large face mills, long boring bars, and heavy drilling tools.

Rapids of 8 m/min on all axes are slow by machining center standards but appropriate for a machine designed around positioning accuracy and cutting rigidity rather than speed. At $500,000-$800,000 new, the KBN135 serves manufacturers who need to machine large workpieces in a single setup with the precision and torque that only a floor-type boring machine can deliver.