Proudly certified by AS9100 in year 2014

Yieh Chen is your Thread Rolling and Spline Rolling solution. Sixstar is an ISO9001 & AS9100 Certified Manufacturer of Gears

Proudly certified by AS9100 in year 2014

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Spline Rolling Machine

Spline Rolling Machine

Spline Rolling Machine is inherently accurate, with surface finishes of 3 to 6 micro-inches obtainable by rolling.

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Experience Custom Gears

Experience Custom Gears

Founded in 1975 by six brothers, Six Star owns 40 years of experience on manufacturing precision gear products.

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Spur Gear and Helical Gear Manufacturer - Yieh Chen

Based in Taiwan, Yieh Chen Machinery Co., Ltd. is a spur gear and helical gear manufacturer with over 31 years of experience in gear industry.

With CNC gear machining, ISO certification and advanced software, Yieh Chen's high precision spur gears and helical gears are built with excellency.

Along with Spur Gears and Helical Gears, worm shafts, spiral bevel gears, bear boxes, gear pumps and gear racks are provided as well. All gears can be custom-made with innovative solutions to meet each customer's demands.

Proudly certified by AS9100 in year 2014

2014/08/01 Yieh Chen

We proudly announce the certification of AS9100 in year 2014, the milestone of Six Star Group to advance further in Aerospace field with our professional gear products.

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For more information, check our certification page: Certification