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Koyo High Precision is a microfabrication manufacturer that excels at the processing of difficult-to-cut materials such as tungsten and molybdenum.
It supplies consistent levels of processing precision to companies requiring precision cutting or drilling of metals with high melting points.
This page uses specific processing examples to explain the features of Koyo High Precision's microfabrication and the fabrication methods it uses.
Koyo High Precision is a manufacturer that excels at high precision microfabrication of difficult-to-cut materials and hard, brittle materials.
It has a track record of performing turning for pure tungsten with a tolerance of ±0.003 mm (±3 µm), and it consistently achieves the high levels of precision needed for the processing of precision components.
It also performs ultra-fine, high difficulty processing such as processing platinum nozzles used for semiconductors (with exterior diameters of 0.2 mm and interior diameters of 0.15 mm) and drilling of fine through-holes in Hastelloy (hole diameters of 0.2 mm and depths of 40 mm). Furthermore, Koyo High Precision can perform processing with special requirements, such as working with materials with a surface roughness of Ra0.5 or thin ceramics with a wall thickness of 0.06 mm.
It can perform production for lots as small as single prototypes or as large as 1,000,000 units per month, and it maintains the same level of precision in its mass production processes as it does in its prototypes.
After processing, a dedicated team uses 3D measurement devices and image measurement devices to rigorously check quality and dimensions.
Koyo High Precision primarily performs turning for round and cylindrical objects (such as shafts).
It offers high precision microfabrication services such as cutting, grinding, and micro drilling.
Equipment such as NC lathes (chuckers, bar machines), machining centers, and drilling centers are used to achieve stable precision even on complex shapes.
The company can work with over 20 types of materials, including difficult-to-cut materials, and primarily focuses on tungsten, molybdenum, and tantalum.
These materials have high melting points and are exceptionally heat- and corrosion-resistant, which makes them highly suited for use in precision components that are used in harsh environments, such as the components used in semiconductor production equipment and vacuum devices.
For turning, Koyo High Precision supports material diameters of 3 to 220 mm.
Lengths can be up to 1,500 mm for diameters of 12 mm or less and up to 700 mm for diameters of 32 mm (* specific conditions vary depending on the material size, so please inquire regarding details).
Machining can be performed for workpieces measuring up to 1,000 mm x 500 mm.
Koyo High Precision can perform precision processing for complex shapes such as plates and boxes.
Koyo High Precision can process difficult-to-cut materials with a precision of ±0.003 mm (±3 µm), so this manufacturer is particularly suited for processing the small components needed for semiconductor production equipment.
It can work with metals with high melting points, which enables it to manufacture components for use in environments that ordinary materials can't stand up to.
Semiconductor equipment operation includes special conditions such as high temperatures, vacuums, and chemical use, so the components used in them must be made out of material that is resistant to deformation and has high levels of long-term dimensional stability. Using difficult-to-cut materials helps maintain precision levels and stable equipment operation.
This site presents the microfabrication services available for each processing method, including those offered by Koyo High Precision.
Please use it to find partners that are good fits for your processing requests and materials.

| Applications and usage scenarios | Components for semiconductor production equipment |
|---|---|
| Component size/shape conditions | Can accommodate materials with diameters ranging from ⌀3 to ⌀220 mm |
| Processing precision | Capable of high-precision fabrication on the order of ±3 µm |
| Lot sizes | 100 to 100,000 units |
| Turnaround time | Turnaround time depends on the shapes, quantities, and level of precision involved, but the standard turnaround time is 20 days. Please consult regarding your needs. |
* Source: Koyo High Precision website (https://koyohighprecision.com/industries/)

| Applications and usage scenarios | Components for semiconductor production equipment, optical components, laser components, mask and window material, etc. |
|---|---|
| Component size/shape conditions | 3 mm to 200 mm |
| Processing precision | Capable of high-precision processing on the order of ±3 µm |
| Lot sizes | 100 to 1,000 units |
| Turnaround time | Turnaround time depends on the shapes, quantities, and level of precision involved, but the standard turnaround time is 20 days. Please consult regarding your needs. |
* Source: Koyo High Precision website (https://koyohighprecision.com/industries/)
| Company Name | Koyo High Precision Co., Ltd. |
|---|---|
| Location | Churaku Tamaki-cho, Watarai-gun Mie 519-0412 Japan |
| Telephone | +1-(847)-593-7000 |
| Website | https://koyohighprecision.com/ |

Tungsten, molybdenum, tantalum,etc.

Silicon, glass, quartz,etc.

Silicon, glass, copper,Etc.