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HYUNDAI WIA Machine America Corp

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KF-II SeriesHigh Speed & High Productivity Vertical Machining Center

The KF-II Series is a vertical machining center that is a great improvement on the existing KF series, Hyundai Wia's steady seller. By providing high-precision machining through quality improvement of the spindle and customized machining through various spindle line-ups, this product will contribute to maximizing customer productivity.

Most Versatile Vertical Machining Center

  • High-precision machining by improving spindle quality
  • Improved user convenience by applying the latest controller of FANUC
  • Innovative improvement in chip disposal capability by applying the upper type conveyor and bed-flushing device
  • Various motors and columns provided for customized machining
  • High-speed roller type LM guide in all axes

Basic Features

High-speed & high-productivity state-of-the-art vertical machining center


1Spindle Optimized For Machining

The machining tool’s spindle is structurally optimized to dramatically improve the spindle vibration and acceleration / deceleration compared to the previous model, providing the best machining quality.

58% reduction in spindle vibration compared to existing models

Spindle acceleration / deceleration increased by 19%

2Integral High Column Option

The height of the Z-axis can be extended when the integral high column provided as an option is applied.


Significantly improved rigidity compared to competitor’s block-type high columns

※A~B : From table top to spindle distance

KF4600 II (A~B) KF4600 II High Column
150~670 mm
350~870 m/min
KF5600 II (A~B) KF5600 II High Column
150~670[785] mm
450~1,085 m/min
KF6700 II (A~B) KF6700 II High Column
150~785 mm
450~1,085 m/min

3Significantly Improved Ball Screw Stiffness And Longevity

The ball screw stiffness has been increased from the existing model by applying the three-row bearings in all-axis and oil lubrication method, and the lifetime of the Z-axis ball screw has been greatly increased by optimizing the spindle structure and lubrication method.


Increased ball screw stiffness from existing model by147%

Increased the lifetime of Z-axis ball screw from existing model by 576%

KF-II Series Rapid Traverse Speed

Rapid Traverse Speed (X/Y/Z) 36/36/30 m/min

KF4600 II Travel

Travel (X/Y/Z) 900/460/520 mm

KF5600 II Travel

Travel (X/Y/Z) 1,100/560/520 [635] m/min

KF6700 II Travel

Travel (X/Y/Z) 1,300/670/635 mm

4Breakthrough The Disposal Of Chips Capability Improvement

The upper type chip conveyor is applied as a standard to efficiently remove chips generated during machining. In addition, the 365 liter (KF5600 II, 6700 II) large coolant tank provides a seamless machining environment even with large amounts of coolant.


Standard application of upper type chip conveyor


Standard application of upper type chip conveyor

Standard on-board screw chip conveyor application (forward / backward rotation function added)

Bed-flushing coolant is applicable (optional)

Separated an oil-skimmer and coolant tank to keep coolant free of tramp oils.


Excellent machining performance with high-precision spindle at ease even during long-time machining

1Improved Spindle Machining Quality


58% reduction in spindle vibration compared to existing models

Spindle acceleration / deceleration increased by 19%

Hybrid tool lock

Improved rotary joint quality

Reduced Spindle Vibration And Improved Acceleration / Deceleration

By improving the spindle structure, the vibration and deflection of the spindle are improved, acceleration and deceleration are improved, and the load on the Z-axis feed shaft bearing is reduced to achieve high accuracy and high productivity.

Spindle Oil Cooling (Standard Spindle Over 10,000 Rpm)

By adopting the spindle oil cooling system as an option, a consistent spindle temperature is maintained even during long-term machining, ensuring stable machining ability.

Hybrid Tool Lock

By applying the hybrid tool lock (hydraulic type) through a pneumatic system, the hydraulic motor is removed, reducing heat and noise.

Improved Rotary Joint Quality

The improved integral structure of the rotary joint prevents damage in the spindle motor by oil leakage.


KF4600 II Direct connection 8K (standard),10K,12K,15K
KF5600 II Direct connection 8K (standard),10K,12K,15K / Built-in 20K
KF6700 II Direct connection 8K (standard),10K,12K,15K / Built-in 20K

2Direct Driven Spindle

The spindle acceleration / deceleration time is reduced by directly connecting the motor and spindle. To create a high speed for the spindle, the high-precision, high-speed angular ball bearings design creates a wide range of machining with a maximum 15,000 rpm.


ITEM Spindle Speed Motor (Max./Cont.) Torque (Max./Cont.)
FANUC - SMART PLUS 8,000rpm (KF4600 II, 5600 II) 18.5/11 kW 118/52.5 N·m
8,000 rpm (KF6700 II) 18.5/15 kW 118/71.6 N·m
[8,000 rpm (High Torque)] 15/11 kW 286/143 N·m
[10,000 rpm] 18.5/11 kW 118/52.5 N·m
[12,000 rpm] 18.5/11 kW 118/52.5 N·m
[15,000 rpm] 18.5/11 kW 118/52.5 N·m
HYUNDAI-iTROL [12,000 rpm] 16.2/8.5 kW 119.7/63 N·m
HEIDENHAIN [12,000 rpm] 17/10 kW 108.6/63.7 N·m

3Built-in Spindle

The ultra-high precision, high-speed angular ball bearing design that allows the spindle to operate at high speed provides high-speed machining at a maximum of 20,000 rpm, thus displaying excellent performance during machining of mold.


ITEM Spindle Speed Motor (Max./Cont.) Torque (Max./Cont.)
FANUC 31i-B [20,000 rpm] 22/18.5 kW 98/80 N.m


Touch-type 15 ″ large monitor controller maximizes customer convenience / productivity


Standard Touch 15 ″ Large Monitor

  • - Standard AICC 200 Block.
  • - Standard Smart Guide-i
  • - Standard machining condition selection function

15″ Touch-type Monitor as a Standard

Smart Machine Control Fast Cycle Time Technology
Fine Surface Technology
Conversational Program Smart Guide-i
i-HMI Machining-aid Function Part Program
AI Contour Control AICC-2 (200 blocks look-ahead)
Smooth Tolerance Control 0.1 ㎛ command and specify tolerance
Jerk Control Diminished vibration by controlling acceleration speed
Machining Condition Selection Designated machining level based on speed & quality
Machining Quality Control Function Smooth Tolerance+ integrated support
Part Program Storage 5120M (2MB)
No. of Registerable Programs 1000 EA


The TNC 620 is compact and easy to read.

The TNC 640 is a versatile contouring control system that can control a 19-inch screen and up to 18 axes. Its flexible workshop-friendly programming functions, Heidenhain interactive programming and offline programming, allow the user to create the optimal machining environment.