Hyundai WIA KF6700B II Series
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Table Size
Overview
The Hyundai WIA KF6700B II Series is a large-format, heavy-duty vertical machining center from the second-generation bridge-type platform, stepping up from the KF5700B II with wider Y-axis travel and a larger table for shops machining bigger workpieces. The bridge-type double-column construction provides the structural rigidity needed for aggressive heavy cutting in tool steel, cast iron, and hardened materials where a standard C-frame VMC would flex under load.
Axis travels of 1,300 x 670 x 625 mm (51.2 x 26.4 x 24.6 in) provide a generous work envelope on a 1,500 x 670 mm (59.1 x 26.4 in) table rated for 1,500 kg (3,307 lb). The 670 mm Y-travel is notably wider than the KF5700B II's 570 mm, enabling machining of wider parts, side-by-side fixturing, or larger mold/die blocks. The BT50 spindle delivers 10,000 RPM with 30/26 kW (40/35 hp), providing the power for productive roughing with large-diameter face mills and indexable endmills.
Box way construction on all three axes delivers maximum vibration damping for heavy interrupted cuts. The 14,000 kg machine weight further contributes to stability during aggressive machining. Rapid traverse of 20 m/min (787 ipm) reflects the heavy-duty orientation. The 30-tool ATC (40 optional) handles BT50 tooling, and the FANUC 0i-MF Plus control is standard.
At $200,000-$280,000 new, the KF6700B II targets mold/die shops, heavy equipment manufacturers, and aerospace companies that need large-format, heavy-duty vertical machining. It competes with the Haas VF-6SS, Okuma MB-8000H, and Doosan DNM 6700/50. The combination of bridge construction, BT50 power, and competitive Korean pricing makes this machine a compelling alternative to more expensive Japanese and European options.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 1,300 mm (51.2 in) |
| Y-Axis Travel | 670 mm (26.4 in) |
| Z-Axis Travel | 625 mm (24.6 in) |
| Table Size | mm |
| Table Load Max | 1,500 kg (3,307 lb) |
| Max Spindle Speed | 10,000 RPM |
| Spindle Taper | BT50 |
| Spindle Motor Power | kW |
| Spindle Drive | Belt drive |
| Atc Capacity | 30 tools (40 optional) |
| Atc Type | Servo-driven arm type |
| Rapid Traverse Rate | 20 m/min (787 ipm) |
| Guideway Type | Hardened and ground box ways |
| Positioning Accuracy | ±0.005 mm (±0.0002 in) |
| Repeatability | ±0.003 mm (±0.00012 in) |
| CNC Control | FANUC 0i-MF Plus |
| Machine Weight | 16,500 kg (36,376 lb) |
| 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
- 1,300 x 670 mm travel envelope accommodates large mold/die blocks, wide castings, and multi-fixture setups that smaller VMCs cannot handle
- Bridge-type double-column construction provides structural rigidity far exceeding C-frame VMCs for heavy-duty cutting
- 30 kW (40 hp) BT50 spindle delivers the torque for aggressive roughing with large face mills in tool steel and cast iron
- 1,500 kg table load handles heavy workpieces and robust fixturing without compromising machining accuracy
- Box way guideways provide superior vibration damping essential for interrupted cuts on large castings and forgings
- Competitive pricing at $200K-$280K versus comparable Japanese and European bridge-type VMCs in this size class
Limitations
- 20 m/min rapid traverse is slow compared to linear guide machines — not suited for high-speed aluminum-dominant work
- 16,500 kg weight requires heavy-duty foundation and significant floor space planning
- 10,000 RPM spindle speed is optimized for ferrous materials — high-speed aluminum work is better served by lighter, faster machines
- Hyundai WIA heavy-duty VMC service expertise is less established than Okuma or Mazak in the North American market
Best For
Frequently Asked Questions
01
The KF6700B II steps up in all three axis travels (1,300 vs 1,050 X, 670 vs 570 Y, 625 vs 550 Z), has a larger table (1,500x670 vs 1,270x570 mm), higher table load (1,500 vs 1,200 kg), and more spindle power (40 vs 35 hp). Choose the KF6700B II when part width or workpiece weight exceeds the KF5700B II capacity.
02
At 16,500 kg plus workpiece weight (up to 1,500 kg), the machine requires a reinforced concrete foundation typically 350-500 mm thick with anchor provisions. Consult the machine foundation drawing from Hyundai WIA for exact specifications. Ensure your floor can handle the combined load of approximately 18,000+ kg in the machine footprint area.
03
Yes, but it is not optimized for high-speed aluminum work. The 10,000 RPM BT50 spindle and box ways are designed for ferrous material rigidity. For aluminum-intensive work, the standard KF6700 with linear guides and higher RPM options would be more efficient. The KF6700B II excels where heavy cutting force matters more than spindle speed.
04
Lead times for the KF6700B II typically range from 4-8 months depending on configuration and order backlog. Bridge-type machines are built to order rather than stocked, so planning ahead is essential. Contact your regional Hyundai WIA dealer for current lead time estimates.
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