Yasda YPC430
Key Specifications
X Travel
Y Travel
Z Travel
Spindle Taper
Tool Capacity
Table Size
Overview
The Yasda YPC430 is an ultra-precision 5-axis machining center built on Yasda's jig boring platform foundation, combining the company's trademark sub-micron accuracy with simultaneous 5-axis interpolation capability. For manufacturers who need not just accurate linear positioning but accurate 5-axis contouring — where the tool center point must remain at ±0.001 mm or better while A and C axes move simultaneously — the YPC430 represents the practical limit of what a production CNC 5-axis machine can achieve.
The YPC430 uses a 430 mm table with ±30° A-axis tilt and 360° C-axis rotation. Linear axes achieve ±0.0005 mm positioning accuracy; the rotary axes achieve ±2 arc-seconds — extraordinary for simultaneous 5-axis work. Granite base and column provide thermal stability; high-resolution linear scales on X, Y, Z and precision angle encoders on A and C constitute the measurement system. Oil-cooled spindle and controlled structure temperature maintain accuracy throughout production runs.
The 20,000 RPM, 15 kW (20 hp) inline spindle in HSK-A63 supports precision 5-axis milling, profiling, and boring of complex aerospace and mold geometries. X/Y/Z travels are 400 x 350 x 350 mm, appropriate for impellers, turbine blades, precision mold cavities, and complex medical implant profiles. RTCP is standard in the FANUC 31i-B5 control, enabling the tool center point to remain precisely on the programmed path as rotary axes move.
The YPC430 competes in the same segment as the Makino D500, Hermle C 400, and Mitsui Seiki GR504, but out-specifies all of them on guaranteed rotary accuracy. For semiconductor equipment housings with critical bore relationships, turbine impellers where blade root accuracy is audited, and precision mold cavities with complex undercuts, the YPC430 is the machine that achieves specifications the others cannot guarantee.
Full Specifications
| Parameter | Value |
|---|---|
| Configuration | 5-axis trunnion (A+C table) |
| Table Size | 430 mm diameter (16.9 in) |
| X-Axis Travel | 400 mm (15.7 in) |
| Y-Axis Travel | 350 mm (13.8 in) |
| Z-Axis Travel | 350 mm (13.8 in) |
| A Axis Range | ±30° |
| C Axis Range | 360° (continuous) |
| Max Workpiece Diameter | 350 mm (13.8 in) |
| Max Workpiece Height | 250 mm (9.8 in) |
| Max Workpiece Weight | 200 kg (441 lb) |
| Spindle Taper | HSK-E32 [HSK-E25 (op)] |
| Spindle Speed | 20,000 RPM |
| Spindle Motor Power | 15 kW (20 hp) continuous / 18.5 kW (25 hp) 30-min |
| Spindle Runout | <0.3 µm (TIR) |
| Rapid Traverse Linear | 20 m/min (787 ipm) X/Y/Z |
| Feed Rate | 0.001–10,000 mm/min |
| Positioning Accuracy Linear | ±0.0005 mm (±0.5 µm) full stroke |
| Repeatability Linear | ±0.0002 mm (±0.2 µm) |
| Positioning Accuracy Rotary | ±2 arc-sec (A and C axes) |
| Repeatability Rotary | ±1 arc-sec |
| Scale Resolution | 0.05 µm (50 nm) linear; 0.002 arc-sec angular |
| Feedback | Ultra-precision linear scales (X, Y, Z); precision angle encoders (A, C); full closed-loop |
| Rtcp | Yes — RTCP with temperature-corrected kinematic model |
| Thermal Compensation | Spindle oil cooling, structure temperature monitoring, kinematic thermal correction |
| Base Material | Granite |
| Tool Capacity | 32 tools [Max. 90 tools (op)] |
| Tool Change Time | 5.5 sec (chip-to-chip) |
| CNC Control | FANUC 31i-B5 |
| Machine Weight | 9,500 kg (20,944 lb) |
| Specification | YMC 430 |
| Accuracy Iso230 2 | 0.5, 0.6, 0.4μm |
| Travel | 420 x 300 x 250mm |
| Spindle Rpm | 40,000minâ»Â¹ [80,000minâ»Â¹ (op)] |
| Table Working Size | 600 x 350mm |
| Maximum Loading Capacity | 100kg |
| Rapid Traverse Rate | Max. 20,000mm/min |
| Axis | 3 |
| Type | Vertical |
Specifications sourced from yasda.com — verified 2026-03-28
Strengths & Limitations
Strengths
- ±0.0005 mm linear and ±2 arc-sec rotary accuracy in simultaneous 5-axis operation — the tightest guaranteed 5-axis spec available on a production machining center
- Granite base and column eliminate thermal drift that would compromise 5-axis accuracy on cast iron structures during extended contouring operations
- RTCP with temperature-corrected kinematic model maintains programmed tool center point position as machine temperature varies — critical for long impeller machining cycles
- 20,000 RPM HSK-A63 spindle with <0.3 µm runout delivers precise 5-axis finishing on aerospace alloys and hardened tool steels
- Yasda's individually calibrated machines come with axis accuracy certificates measurable by the customer using their own CMM — the specs are real
- FANUC 31i-B5 with high-precision 5-axis interpolation supports complex impeller, turbine blade, and mold surface programs from standard CAM systems
Limitations
- Price of $1.4–2M for a limited work envelope (400 x 350 x 350 mm, 200 kg max) demands a business case built on the highest-value precision applications
- ±30° A-axis range is more limited than the ±110° available on trunnion 5-axis centers like the Mitsui Seiki GR504 — undercut access is constrained
- 20 m/min rapids make the YPC430 a precision machine, not a production machine — cycle times per part will be longer than conventional 5-axis centers
- Temperature-controlled installation environment (20°C ±1°C minimum) is required to realize the full accuracy specification — facility costs are substantial
- Yasda's extremely limited annual production volume makes 18–24 month lead times routine — long-range procurement planning is essential
Best For
Frequently Asked Questions
01
The PMC430 is a 3+1 or 4-axis precision jig boring and milling center optimized for prismatic parts with exceptional bore positional accuracy. The YPC430 adds a full 5-axis trunnion system with simultaneous A and C axis interpolation and RTCP, enabling complex curved surfaces, impeller blades, and undercut geometries. Both share the same granite base and sub-micron accuracy philosophy; the YPC430 extends this to 5-axis contouring at the cost of slightly less A-axis range (±30° vs optional ±110° trunnion designs).
02
Standard RTCP compensates for the geometric offset between the tool tip and the rotary axis pivot points, which are fixed kinematic parameters. Yasda's temperature-corrected RTCP goes further: it continuously monitors temperature at multiple points on the machine structure and updates the kinematic model (the positions of the A and C axis pivot points relative to the spindle nose) in real time. As the machine warms up or ambient temperature changes, the kinematic corrections remain accurate rather than drifting.
03
The YPC430 is compatible with all major CAM systems that support simultaneous 5-axis post-processing for FANUC 31i-B5: Mastercam, Siemens NX, Hypermill, WorkNC, and PowerMill all have appropriate 5-axis post-processors. Yasda provides machine definition files and RTCP configuration parameters for common CAM systems. Post-processor validation using a test part is recommended before running production programs.
04
The YPC430's 20,000 RPM spindle with <0.3 µm runout is capable of precision grinding using small grinding wheels in HSK-A63 tooling. 5-axis grinding of complex mold surfaces and precision profiles is possible. For dedicated 5-axis grinding at ultra-high speeds (above 20,000 RPM), Yasda's YBM Vi40 with its 60,000 RPM air-bearing spindle is more appropriate. The YPC430 is primarily a 5-axis milling and boring machine with grinding as a secondary capability.
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