Micron-level precision, delivered worldwide.

From sub-millimeter shafts to optical housings, Shiomi Precision turns demanding drawings into reliable production parts — with the documentation your quality team expects.

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Founded
1968
Countries served
23
Tolerance
±1µm
Parts shipped / year
18M

What We Do

Cutting, machining, finishing, inspection and packaging all happen under one roof at our Shiomi City plant — so we can support you from a single prototype to hundreds of thousands of parts per month.

  1. Precision Machining

    86 CNC Swiss-type lathes and machining centers cut stainless steel, titanium and aluminum alloys to micron tolerances.

  2. Grinding & Finishing

    Centerless grinding and lapping deliver roundness and surface finish that exceed your drawing callouts.

  3. Inspection & QA

    CMM and vision measurement in a temperature-controlled lab, with dimensional records kept for every shipment.

Our capabilities

Featured Products

A selection of components trusted in medical devices, semiconductor equipment and optical instruments.

  • Motion components

    Precision Shafts

    Stainless steel and titanium shafts from Ø0.8 to Ø20 mm, ground to 0.5 µm roundness for medical pumps and high-precision motors.

    • OD tolerance ±1 µm
    • SUS303 / SUS440C / Ti-6Al-4V

  • Motion components

    Miniature Gears

    Hobbed micro gears from module 0.1, produced in volume for camera lens actuators and instrument gearboxes.

    • Module 0.1–1.0
    • Equivalent to JIS N4 / AGMA Q12

  • Fluid control

    Micro Nozzles

    Dispensing nozzles with bores down to Ø0.05 mm and burr-free internal finishes, built for semiconductor equipment.

    • Bore from Ø0.05 mm
    • Internal finish Ra 0.1 µm

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News

  • Company

    New temperature-controlled metrology lab opens at Plant 2

  • Trade show

    Thank you for visiting our booth at the precision machining fair in Stuttgart

  • Careers

    Applications open for our 2027 graduate program (Japan)

  • Quality

    ISO 13485 certification successfully renewed

Build the last micron with us.

No machining background? No problem. Our six-month training program takes you from reading drawings to running measurements, one step at a time.

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