Hyundai WIA KF4600 II High Speed Type
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The Hyundai WIA KF4600 II High Speed Type is the performance-oriented variant of the second-generation KF4600 platform, configured with a high-RPM spindle and HSK-A63 interface for aggressive aluminium and light-alloy machining. While sharing the same cast iron column, travel envelope, and table as the Standard Type, the High Speed variant trades low-end torque for the elevated spindle speeds that aluminium machining demands.
Travel remains 600 x 460 x 510 mm (23.6 x 18.1 x 20.1 in) with a 1,020 x 460 mm table. The defining difference is the spindle: an HSK-A63 direct-drive unit capable of 15,000 RPM (20,000 RPM optional) with optimised power and torque curves for high-speed operation. The HSK-A63 interface provides simultaneous taper-and-face contact that tightens under centrifugal force, maintaining tool rigidity and balance at speeds where BT40 holders begin to lose clamping force.
Rapid traverse rates of 48 m/min (1,890 ipm) in all axes are unchanged from the Standard Type, keeping non-cutting times identical. The 24-tool arm-type ATC (expandable to 30 or 40 tools) accommodates the smaller-diameter tools common in high-speed aluminium machining. Linear roller guideways handle the accelerations and decelerations of high-speed toolpaths without the stick-slip issues that box ways can exhibit.
The FANUC 0i-MF Plus control with nano-interpolation and look-ahead processing is critical for high-speed machining, where the control must process blocks fast enough to maintain smooth motion at elevated feed rates. At $110,000-$155,000 new, the KF4600 II High Speed Type offers HSK-A63 high-speed capability at a price point well below comparable Makino and Okuma high-speed VMCs.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 600 mm (23.6 in) |
| Y-Axis Travel | 460 mm (18.1 in) |
| Z-Axis Travel | 510 mm (20.1 in) |
| Table Size | mm |
| Table Load Max | 500 kg (1,102 lb) |
| Max Spindle Speed | 15,000 RPM (20,000 RPM optional) |
| Spindle Taper | HSK-A63 |
| Spindle Motor Power | kW |
| Spindle Type | Direct drive |
| Tool Capacity | 24 (30/40 optional) |
| Tool Changer Type | Arm-type ATC |
| Rapid Traverse Rate | 48 m/min (1,890 ipm) |
| Guideway Type | Linear roller guideways |
| Positioning Accuracy | +/-0.005 mm (+/-0.0002 in) |
| Repeatability | +/-0.003 mm (+/-0.00012 in) |
| CNC Control | FANUC 0i-MF Plus |
| Machine Weight | 7,800 kg (17,196 lb) approx. |
| Description | Unit |
| Max Load Capacity | kg |
| Spindle Rpm | r/min |
| Spindle Torque | N.m |
| Travel | mm |
| Rapid Feed Rate | m/min |
| No Of Tools | EA |
| Tool Change Time | sec |
| Type Of Business | Business Type 1VehiclesIT/ElectronicsMachinery/ShipbuildingComplex & Precise PartsDie&Mold IndustryEnergyOthersBusiness Type 2 |
| E Mail | @ |
Specifications sourced from wiamachine.com — verified 2026-03-28
Strengths & Limitations
Strengths
- HSK-A63 spindle at 15,000-20,000 RPM provides superior high-speed rigidity and balance for productive aluminium machining
- Direct-drive spindle eliminates belt vibration for cleaner surface finishes at elevated RPM on contoured parts
- 48 m/min rapid traverse maintains class-leading non-cutting speed for fast cycle times on multi-operation programs
- Second-generation platform improvements include better thermal compensation and stiffer casting for high-speed accuracy
- FANUC nano-interpolation and look-ahead processing support smooth motion at high feed rates required for HSM toolpaths
- Significant cost advantage over Makino and Okuma high-speed VMCs with similar HSK-A63 spindle capability
Limitations
- HSK-A63 tooling is 40-60% more expensive than BT40, adding significant cost when building a full tool library
- Higher-speed spindle has reduced torque at low RPM compared to the Standard Type, limiting heavy steel roughing
- 460 mm Y-travel is compact for shops working with wider parts or multi-fixture pallet setups
- Not the best choice for steel-dominant shops where lower RPM and higher torque are more productive
Best For
Frequently Asked Questions
01
Choose the High Speed Type when aluminium is your primary workpiece material (60%+ of your work). The 15,000-20,000 RPM spindle and HSK-A63 interface deliver measurably shorter cycle times on aluminium through higher surface speeds and better tool balance. For mixed-material shops where steel is 40%+ of the work, the Standard Type with BT40 and 12,000 RPM provides better torque for steel roughing.
02
HSK-A63 provides simultaneous taper and face contact, which tightens under centrifugal force at high RPM. BT40 holders rely only on taper contact and can lose clamping force above 12,000 RPM, leading to vibration and reduced accuracy. For spindle speeds of 15,000-20,000 RPM, HSK-A63 is the industry-standard interface for maintaining tool rigidity and balance.
03
The High Speed Type typically costs $10,000-$15,000 more than the Standard Type at equivalent option levels. However, the total cost difference is larger when factoring in HSK-A63 tooling, which costs 40-60% more per holder than BT40. A 24-tool HSK library might cost $3,000-$5,000 more than the equivalent BT40 set.
04
Yes. The 18.5 kW spindle provides adequate torque for steel machining at moderate parameters. You will not match the low-RPM heavy roughing performance of the Standard Type, but for mixed shops doing 30-40% steel work, the High Speed Type is workable. Many shops accept the compromise for the aluminium speed advantage.
Videos
MD Machinery Inc.
Ward CNC
MachineryValues Inc
GrinTech Kft.
