Hyundai WIA KH400
Key Specifications
Max Spindle
Spindle Taper
Rapid Traverse
Spindle Power
Accuracy
Repeatability
Overview
The Hyundai WIA KH400 is a 400 mm pallet horizontal machining center engineered for high-volume production of complex prismatic components in a compact HMC footprint. The 400 mm square pallet with 500/560/500 mm (X/Y/Z) travels and a 15,000 RPM BT40 spindle positions the KH400 directly against the Mazak HCN-4000, DMG Mori NHX 4000, and Okuma MA-400H in the competitive 400 mm HMC segment.
The KH400's horizontal spindle orientation provides a critical chip evacuation advantage over vertical machining centers — gravity pulls chips away from the work zone continuously, reducing re-cutting and extending tool life in high-volume production. A two-pallet APC (automatic pallet changer) enables one pallet to be loaded and fixtured while the other is in the machine cutting, achieving near-continuous spindle utilization in high-volume manufacturing cells.
The spindle delivers 15,000 RPM with 22/18.5 kW (30/25 hp) in a BT40 configuration. The 60-tool ATC (chain-type) ensures full tooling flexibility for complex 4-side machining programs without tool carousel changes. Rapid traverse of 60 m/min (2,362 ipm) in X, Y, and Z is competitive at the top of the 400 mm HMC class, reducing non-cutting time in high-cycle-count production.
The FANUC 0i-MF Plus control with full B-axis (rotary table) support enables 4-side machining of prismatic parts in a single setup. At $300,000-$420,000 new, the KH400 is priced at the competitive end of the 400 mm HMC market. For automotive, aerospace, and precision manufacturing facilities running medium-to-high volume production of complex parts, the KH400 delivers a strong combination of productivity, flexibility, and Korean manufacturing value.
Full Specifications
| Parameter | Value |
|---|---|
| Pallet Size | 400 x 400 mm (15.7 x 15.7 in) |
| X Travel | 500 mm (19.7 in) |
| Y Travel | 560 mm (22.0 in) |
| Z Travel | 500 mm (19.7 in) |
| Max Spindle Speed | 15,000 RPM |
| Spindle Motor Power | 22/18.5 kW (30/25 hp) |
| Spindle Taper | BT40 |
| Spindle Type | Built-in spindle motor |
| Atc Capacity | 60 tools |
| Atc Type | Chain-type ATC |
| Pallet Changer | 2-pallet APC |
| B Axis Indexing | 1° indexing (optional: 0.001°) |
| Guideway Type | Linear roller guides |
| Rapid Traverse Rate | 60 m/min (2,362 ipm) |
| Positioning Accuracy | ±0.004 mm (±0.00016 in) |
| Repeatability | ±0.002 mm (±0.00008 in) |
| Machine Weight | 18,000 kg (39,683 lb) |
| CNC Control | FANUC 0i-MF Plus |
Strengths & Limitations
Strengths
- 60 m/min rapids in all three axes lead the 400 mm HMC class, maximizing spindle utilization in high-cycle programs
- 2-pallet APC enables continuous cutting — one pallet loads while the other machines, maximizing spindle-on time
- 60-tool chain ATC provides full tooling flexibility for complex 4-side machining programs without ATC swaps
- 15,000 RPM BT40 spindle covers both high-speed aluminum and productive steel machining in a single machine
- Horizontal orientation and gravity chip evacuation reduce re-cutting damage and extend tool life versus VMCs
- FANUC 0i-MF Plus with B-axis support enables complete 4-side machining in a single pallet setup
- Competitive pricing at $300K-$420K versus comparable Mazak HCN-4000 and DMG Mori NHX 4000
Limitations
- $300K-$420K capital cost requires high-volume production justification — HMCs are most efficient at production quantities that amortize the investment
- 18,000 kg machine weight requires significant floor preparation, crane access, and foundation engineering
- BT40 taper limits maximum tool length and heavy-cut capability compared to BT50 HMCs — appropriate for the 400 mm pallet class but a consideration for very aggressive cutting
- Hyundai WIA's HMC after-sales infrastructure is smaller than Mazak, Okuma, or DMG Mori — evaluate regional support availability
- 2-pallet APC is the standard configuration; higher-pallet systems require integration with a separate FMS pallet pool, adding system cost
Best For
Frequently Asked Questions
01
New KH400 horizontal machining centers typically sell in the $300,000-$420,000 range depending on options, tooling packages, and regional dealer pricing. Used 400 mm HMCs are available but less common than VMCs; expect $150,000-$250,000 for machines in good condition from reputable dealers. HMC pricing varies significantly based on pallet pool expansion, automation options, and ATC configuration.
02
Horizontal machining centers provide several production advantages over VMCs: gravity-assisted chip evacuation reduces chip re-cutting and extends tool life; the B-axis rotary table enables 4-side machining in a single pallet setup, reducing part handling; and the 2-pallet APC allows loading and unloading while cutting, improving spindle utilization. The trade-offs are higher capital cost, larger footprint, and more complex setup and programming. HMCs are most cost-effective at medium-to-high production volumes on complex parts.
03
The KH400 uses a 400 x 400 mm square pallet with a maximum workpiece weight of approximately 400 kg (882 lb) including fixtures and tooling. The 400 mm pallet is appropriate for medium-size prismatic parts — automotive components, hydraulic manifolds, aerospace brackets, and similar workpieces that fall within the 500/560/500 mm travel envelope.
04
Yes. The KH400's pallet system is designed for integration with pallet pools and flexible manufacturing systems. The standard 2-pallet APC provides basic load/unload automation; for higher levels of automation, Hyundai WIA and third-party integrators offer pallet pool systems that can feed multiple KH400 machines from a common queue. This is a common configuration in automotive and aerospace production facilities.
05
The standard KH400 provides 1-degree B-axis indexing (360 positions), sufficient for 4-side machining of prismatic components. A 0.001-degree continuous B-axis option is available for shops requiring 5-axis indexed machining or full 4+1 positioning. The 0.001-degree option adds cost and is typically specified only when the part mix includes angled features or compound angle drilling.
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