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Latest update: 08/07/2020 17:39:14

Yamagishi Seisakusho Co., Ltd.

Machining specialist 

We machine agricultural machine parts, machine tool parts, marine parts and parts for aviation equipment, with a focus on engine parts for use in automobiles.
Certified for NAGANO Monozukuri Craftmanship Excellence 2017 in October 2017.
Certified by the Ministry of Economy, Trade and Industry as “a company driving the future of the region” in December 2017.
Quality Assurance: We obtained ISO9002 certification in 1996 and have now achieved ISO9001: 2015 certification. We have had many positive evaluations from our customers.

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Technology and products
A large diameter cutting tool that was developed in-house
At our company, we use the large-diameter φ620-mm cutting tool we developed in-house to conduct surface processing that does not result in unevenness of the processed surface. This surface processing technology using the large diameter cutting tool was certified by “NAGANO Monozukuri Excellence 2017,” which acknowledges technology/products Nagano Prefecture is proud of.
φ620-mm cutting tool current flatness/surface roughness
Approximate size of the product: 560 mm × 580 mm
Surface roughness: Ra1.0 mm
Flatness: 0.05 mm
Main products
Flywheel housing (car parts)
Gear case cover (car parts)
Gear case (car parts)
Crank case (car parts)
Housing (industrial vehicle parts)
Chamber (medical equipment)
Index (machine tool parts)
Blade (turbine parts)

This company is recommended by the following support organizations.

Kanto Head Office, SMRJ
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