Yasda PMC430
Key Specifications
X Travel
Y Travel
Z Travel
Spindle Taper
Tool Capacity
Rapid Traverse
Overview
The Yasda PMC430 is a precision jig boring and milling center combining the geometric accuracy of a traditional jig borer with the CNC automation, ATC capability, and production throughput of a horizontal machining center. Yasda's PMC series carries forward the legacy of the precision jig boring machine — originally a tool room instrument used to locate holes with sub-micron precision — and translates it into a CNC platform capable of producing complex precision prismatic parts in a production environment.
The PMC430 uses a 430 mm square pallet and achieves ±0.0005 mm (0.5 micron) full-stroke positioning accuracy with ±0.0002 mm repeatability — specifications that approach CMM accuracy. The machine is built on a granite base with hydrostatic or ultra-precision rolling guide systems, and linear scale feedback on all axes operates at sub-micron resolution. Temperature compensation via controlled coolant circulation through the spindle, drives, and structure maintains accuracy across extended production runs.
X/Y/Z travels are 400 x 350 x 350 mm. The inline-direct spindle runs to 20,000 RPM at 11 kW (15 hp) in No. 40 taper or HSK-A63, suitable for precision boring, reaming, fine milling, and contouring of precision molds, hydraulic manifolds, and bearing bores. A 30-tool ATC is standard. The FANUC 31i-B5 control provides high-precision interpolation, error compensation, and thermal drift correction cycles native to Yasda's accuracy philosophy.
The PMC430 is not a production throughput machine — it is a precision accuracy machine. It is purchased to make the parts that other machines cannot make accurately enough, and to establish a shop's precision credibility in aerospace, defense, semiconductor, and precision instrument supply chains.
Full Specifications
| Parameter | Value |
|---|---|
| Pallet Size | 430 x 430 mm (16.9 x 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) |
| Max Table Load | 400 kg (882 lb) |
| Spindle Taper | No. 40 (CAT40 / BT40 / HSK-A63) |
| Spindle Speed | 20,000 RPM |
| Spindle Motor Power | 11 kW (15 hp) continuous / 15 kW (20 hp) 30-min |
| Spindle Runout | <0.3 µm (TIR) |
| Rapid Traverse Rate | 20 m/min (787 ipm) all axes |
| Feed Rate | 0.001–10,000 mm/min |
| Positioning Accuracy | ±0.0005 mm (±0.5 µm) full stroke |
| Repeatability | ±0.0002 mm (±0.2 µm) |
| Scale Resolution | 0.05 µm (50 nm) |
| Feedback | Full-closed loop, ultra-precision linear scales, all axes |
| Thermal Compensation | Spindle coolant circulation, structure temperature sensing, real-time position correction |
| Base Material | Granite |
| Way Type | Ultra-precision linear guides (all axes) |
| Tool Capacity | 30 (standard) |
| Tool Change Time | 5.0 sec (chip-to-chip) |
| Pallet Changer | 2-station APC (optional) |
| CNC Control | FANUC 31i-B5 |
| Machine Weight | 8,000 kg (17,637 lb) |
Specifications sourced from yasda.com — verified 2026-03-28
Strengths & Limitations
Strengths
- ±0.0005 mm positioning accuracy bridges the gap between conventional CNC HMCs and CMM accuracy — suitable for jig borer-class work in a CNC production platform
- Granite base provides thermal stability and vibration damping inaccessible with cast iron at this accuracy level
- Sub-micron linear scale resolution enables real-time closed-loop correction at levels that conventional machining centers cannot sense or correct
- 20,000 RPM spindle with <0.3 µm runout supports precision boring and fine milling for molds, gauges, and bearing components
- Yasda's craftsman-built, individually calibrated machines are trusted by the world's most demanding precision manufacturers — semiconductor, optics, and aerospace alike
- CNC automation with 30-tool ATC and optional APC converts traditional jig borer accuracy into a production-capable workflow
Limitations
- Price of $1–1.6M and limited work envelope (400 x 350 x 350 mm) restrict the PMC430 to high-value, small-to-medium precision components
- 20 m/min rapids reflect the machine's accuracy-first design — it is not a production speed machine
- Granite base requires vibration-isolated installation and temperature-controlled environment — installation costs can be substantial
- Yasda's limited annual production volumes mean 12–24 month lead times are standard — procurement planning must be done well in advance
- Very specialized application knowledge is required to fully utilize the PMC430's accuracy potential — operator training investment is significant
Best For
Frequently Asked Questions
01
A conventional HMC (Okuma, Mazak, Makino) is designed for production throughput with positioning accuracy typically in the ±0.003–0.005 mm range. The Yasda PMC430 is designed specifically for accuracy — ±0.0005 mm — using a granite structure, sub-micron linear scales, ultra-low-runout spindle, and controlled thermal environment. The PMC430 produces fewer parts per hour but with geometric accuracy that conventional HMCs cannot approach.
02
The YBM Vi40 is a vertical machining center with an air-bearing spindle at 60,000 RPM and ±0.0001 mm accuracy — the ultimate precision machine for grinding and fine finishing. The PMC430 is a horizontal platform with a conventional (but ultra-precision) 20,000 RPM spindle at ±0.0005 mm — more suited to jig boring, reaming, and precision milling operations on medium-format parts. The PMC430 accommodates heavier workpieces and is more production-friendly; the YBM Vi40 is the tool room reference machine.
03
Yasda recommends a temperature-controlled environment at 20°C ±1°C for the PMC430 to achieve its full ±0.0005 mm specification. The granite base provides thermal stability but cannot fully compensate for large ambient temperature swings. The machine requires a vibration-isolated foundation — Yasda provides detailed foundation specifications. Clean electrical power (voltage and frequency stability) and filtered compressed air are also required.
04
Yes. The 20,000 RPM spindle with <0.3 µm runout, combined with the granite base's vibration damping, makes the PMC430 well-suited for hard milling operations in H13, D2, and similar tool steels at 58–65 HRC. The key advantage over conventional high-speed machining centers is that geometric accuracy (bore positions, plane relationships) is maintained throughout the hard milling process, enabling direct-to-finish mold inserts without post-machining EDM correction.
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