Yasda YMC 430
Key Specifications
X Travel
Y Travel
Z Travel
Spindle Taper
Tool Capacity
Rapid Traverse
Overview
The Yasda YMC 430 is a 5-axis simultaneous machining center purpose-built for the most demanding micro-precision applications in mold, medical, and aerospace manufacturing. With 430 x 350 x 300 mm (16.9 x 13.8 x 11.8 in) X/Y/Z travel and a trunnion-style rotary/tilt table, it delivers the volumetric accuracy that Yasda is known for in a compact 5-axis configuration. This machine targets shops producing complex 3D geometries — turbine blades, impellers, optical lens molds, and medical implant components — where every micron matters.
Yasda's hand-scraped box guideways form the backbone of the YMC 430's precision. Every linear axis rides on hand-fitted bearing surfaces that damp vibration at the source, enabling mirror-like surface finishes in hardened tool steels without secondary polishing. The A/C trunnion table provides +/-120 degrees of A-axis tilt and 360-degree C-axis rotation with direct-drive motors, eliminating backlash from worm gear systems. The table accepts workpieces up to 430 mm diameter and 300 mm height with a maximum load of 150 kg (330 lb).
The HSK-A63 spindle runs to 20,000 rpm standard (30,000 rpm optional) with a direct-drive motor producing 22 kW (30 HP) of continuous power. Through-spindle coolant at 70 bar handles aggressive deep-cavity machining, while the high-speed spindle option enables micro-tool finishing with tools down to 0.1 mm diameter. Positioning accuracy is +/-1.5 microns across all five axes, with the thermal compensation system actively correcting for environmental and process-induced temperature changes.
The Fanuc 31i-B5 control with AICC-2 (AI Contour Control) provides the 5-axis simultaneous path control needed for complex freeform surface machining. The 32-tool ATC keeps tool change times short, and the machine's compact footprint makes it practical even in crowded tool rooms. The YMC 430 competes directly with the Kern Micro and Hermle C12U in the ultra-precision 5-axis segment, offering a Japanese manufacturing philosophy alternative to European micro-precision machines.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 430 mm (16.9 in) |
| Y-Axis Travel | 350 mm (13.8 in) |
| Z-Axis Travel | 300 mm (11.8 in) |
| A Axis Range | +/-120 degrees |
| C Axis Range | 360 degrees (continuous) |
| Table Diameter | 430 mm (16.9 in) |
| Max Table Load | 150 kg (330 lb) |
| Spindle Speed | 20,000 rpm (30,000 rpm optional) |
| Spindle Taper | HSK-A63 |
| Spindle Motor | 22 kW (30 HP) continuous |
| Positioning Accuracy | +/-1.5 um (all axes) |
| Repeatability | +/-1.0 um |
| Rapid Traverse Rate | 36 m/min (1,417 ipm) |
| Tool Capacity | 32 tools |
| Guideway Type | Hand-scraped box guideways (linear axes) |
| Rotary Drive | Direct-drive (A and C axes) |
| CNC Control | Fanuc 31i-B5 with AICC-2 |
| Machine Weight | 8,500 kg (18,739 lb) |
Specifications sourced from yasda.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Hand-scraped box guideways combined with direct-drive rotary axes deliver 5-axis volumetric accuracy rivaling European micro-precision machines
- +/-1.5 um positioning accuracy across all five axes enables complex freeform surface machining without manual polishing
- Direct-drive A/C trunnion eliminates worm gear backlash for smooth 5-axis simultaneous contouring
- HSK-A63 spindle to 20,000 rpm standard handles both aggressive roughing and fine finishing with micro tools
- Thermal compensation system maintains accuracy during extended 5-axis machining cycles in climate-variable environments
- Compact footprint fits into precision tool rooms without requiring the floor space of larger 5-axis platforms
Limitations
- 430 mm table diameter and 150 kg load capacity limit the machine to smaller precision components
- Premium pricing of $400K-$600K is a significant investment for a compact 5-axis platform
- 32-tool ATC may require creative tooling strategies for complex multi-operation parts
- Limited North American installed base means finding experienced Yasda service technicians can be challenging
- Box guideway rapids of 36 m/min add cycle time compared to linear motor 5-axis machines on parts with extensive repositioning
Best For
Frequently Asked Questions
01
New YMC 430 machines typically price between $400,000 and $600,000 depending on spindle speed option, control configuration, and tooling. The 30,000 rpm spindle option and Heidenhain control add to the base price.
02
Both target the ultra-precision 5-axis micro-machining market. The Kern Micro uses a mineral cast bed and linear motors for high dynamics, while the Yasda YMC 430 uses hand-scraped iron castings and box guideways for superior vibration damping. The Yasda excels in hardened steel finishing; the Kern offers faster dynamics for graphite and aluminum.
03
Yes. The combination of hand-scraped box guideways, rigid casting structure, and direct-drive spindle makes the YMC 430 one of the best 5-axis platforms for finish machining hardened tool steels up to 62 HRC. Many shops achieve mirror finishes without hand polishing.
04
Most shops run hyperMILL, NX, or PowerMILL for 5-axis programming. The Fanuc 31i-B5 with AICC-2 supports smooth 5-axis simultaneous toolpaths from any major CAM system with appropriate post-processor configuration.
05
For shops doing extensive micro-tool finishing with cutters below 1 mm diameter, the 30,000 rpm option is essential for maintaining proper surface speed. For general 5-axis mold work with tools above 2 mm, the standard 20,000 rpm is sufficient.
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