Hyundai WIA KF-D Series
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The Hyundai WIA KF-D Series is a heavy-duty variant of the KF vertical machining center lineup, designed with reinforced construction and higher rigidity for shops machining demanding materials like hardened steel, cast iron, titanium, and other tough alloys. The D designation indicates a machine built for die/mold work and heavy cutting applications where structural stiffness and vibration damping take priority over high-speed capability.
The KF-D Series shares the general travel envelope of the KF5600/KF6700 platform family, with available configurations offering approximately 1,100-1,300 mm X-travel, 560-670 mm Y-travel, and 520 mm Z-travel. What distinguishes the D Series is the reinforced column and base casting, wider guideways, and spindle configurations optimised for torque rather than speed. The BT50 or HSK-A100 spindle option delivers 30+ kW (40+ hp) with torque ratings exceeding 200 Nm, enabling aggressive roughing with large-diameter face mills and extended-reach boring bars.
Box way or hybrid guideway construction on critical axes provides the vibration damping that linear guideways cannot match during heavy interrupted cuts on castings and forgings. The heavier machine mass (15,000-18,000 kg) contributes to vibration absorption. Rapid traverse rates are typically 24-30 m/min, slower than the linear-guideway KF models but appropriate for the heavy-cutting applications where repositioning speed is less critical than cutting stability.
The FANUC 0i-MF Plus or FANUC 31i-B control handles the demanding toolpath calculations for mold and die applications. At $150,000-$220,000 new, the KF-D Series provides heavy-duty VMC capability for die/mold and heavy machining at Korean value pricing, competing with machines from Mazak, Okuma, and Toyoda that typically cost 20-30% more.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 1,100 - 1,300 mm (43.3 - 51.2 in) |
| Y-Axis Travel | 560 - 670 mm (22.0 - 26.4 in) |
| Z-Axis Travel | 520 mm (20.5 in) |
| Table Size | mm |
| Table Load Max | 1,200 - 1,500 kg (2,646 - 3,307 lb) |
| Max Spindle Speed | 8,000 - 12,000 RPM |
| Spindle Taper | BT50 or HSK-A100 |
| Spindle Motor Power | kW |
| Spindle Torque | N.m |
| Guideway Type | Box ways or hybrid (box + roller) |
| Tool Capacity | 30 (40/60 optional) |
| Tool Changer Type | Arm-type ATC |
| Rapid Traverse Rate | 24 - 30 m/min (945 - 1,181 ipm) |
| CNC Control | FANUC 0i-MF Plus or 31i-B |
| Machine Weight | 15,000 - 18,000 kg (33,069 - 39,683 lb) |
| Description | Unit |
| Max Load Capacity | kg |
| Spindle Rpm | r/min |
| 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
- Reinforced column and base castings provide the structural rigidity essential for heavy roughing in hardened steel and cast iron
- BT50 or HSK-A100 spindle with 200+ Nm torque handles large-diameter face mills and extended-reach boring operations
- Box way or hybrid guideway construction delivers superior vibration damping during heavy interrupted cuts on castings
- Higher machine mass (15,000-18,000 kg) absorbs vibration that lighter machines transmit into the workpiece and tool
- 20-30% lower pricing than comparable Mazak, Okuma, and Toyoda heavy-duty VMCs with BT50 spindles
- Multiple configuration options let buyers match travel, spindle, and guideway type to their specific heavy-cutting needs
Limitations
- 24-30 m/min rapid traverse is slower than linear-guideway KF models, increasing non-cutting time on multi-tool programs
- 15,000-18,000 kg weight demands robust foundation and overhead crane capability for installation and maintenance
- Box way guideways require regular lubrication and maintenance attention compared to sealed linear guideways
- Lower spindle speed (8,000-12,000 RPM) limits efficiency on aluminium and light-alloy work
Best For
Frequently Asked Questions
01
The KF-D Series features reinforced castings, box ways or hybrid guideways, BT50/HSK-A100 spindle options, and higher machine weight. The standard KF Series uses linear roller guideways, BT40/HSK-A63 spindles, and lighter construction optimised for speed. Choose KF-D for heavy cutting in steel, cast iron, and tough alloys; choose standard KF for mixed-material production and aluminium work.
02
BT50 is the safer choice for shops with existing BT50 tooling libraries and operators familiar with BT pull-stud systems. HSK-A100 provides better rigidity at higher speeds and eliminates pull-stud maintenance, but tooling costs are higher. For die/mold work under 10,000 RPM, BT50 is perfectly adequate. For shops planning to run at 10,000-12,000 RPM, HSK-A100 offers measurable benefits.
03
New KF-D Series machines typically price in the $150,000-$220,000 range depending on configuration. Smaller-envelope models with BT50 start around $150,000; larger models with HSK-A100, expanded ATC, and FANUC 31i-B control approach $220,000. This represents significant savings over comparable Japanese and European heavy-duty VMCs.
04
For heavy interrupted cuts, yes. Box ways provide superior vibration damping due to the sliding contact area and stick-slip characteristics that absorb cutting forces. Linear guideways are faster and require less maintenance but transmit more vibration during heavy cuts. For die/mold roughing and cast iron machining, box ways produce better surface finish and longer tool life.
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