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Koyo High Precision Co., Ltd

Machining of highly specialized metals and alloys


The company Koyo Electric was founded in 1951 in Japan and is specialized in the machining of hard metals and alloys.

We have over 200 NC lathe machines and 30 machining centers as well as several grinding machines and supply parts for automobiles, motorcycles, locks, bearings, construction equipment, industrial equipment, semiconductors, bicycles, office equipment, medical equipment and many more to various industries. We can produce between 100 and 1 million parts per month.

We process the following materials: steel, stainless steel, brass, aluminum, tungsten (W), molybdenum (Mo), tantalum (Ta), niobium (Nb), Hastelloy, Inconel, permalloy, 42 alloy, Kovar, nickel, silver, copper and platinum (Pt)

We are ISO 9001 and 14001 certified

Koyo High Precision Co., Ltd

639-1 Churaku, Tamakicho Watarai-gun

Mie 519-0412, Japan
Tel: +81 59 658 2121

Fax: +81 59 658 2101

Or contact our European office:

Tel: +41 79 792 86 31

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Masaki Koso



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Meet Masaki at


Micromachining of precious materials

We obtained the international certifications: ISO9001, ISO14001

  • Mass production - 200 NC lathes and 30 machining centers

  • Precious materials such as tungsten, molybdenum, Hastelloy and Inconel

  • Others platinum, tantalum, niobium, permalloy, Alloy 42, Kovar, pure nickel, pure silver and pure copper

  • Extremely small scales with a high level of precision

  • Between 100 and 1 million pieces, with diameters from 3mm to 200mm

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