Yieh Chen Machinery Co., Ltd. - Yieh Chen is your Thread Rolling and Spline Rolling solution. Yieh Chen of Six Star Group is an ISO9001 & AS9100 Certified Manufacturer of Gears transmission components and transmission components.

Yieh Chen high-quality spur gears, helical gears, worm shafts, thread rolling machines and spline rolling machines manufacturer from Taiwan | Yieh Chen Machinery Co., Ltd.

Yieh Chen Machinery Co., Ltd., part of Six Star Group, offers a vast range of meticulously engineered gear and transmission components certified under ISO9001 & AS9100. With expertise in producing spur gears, helical gears, worm shafts, and more, Yieh Chen serves critical industries including aerospace and agriculture. Their state-of-the-art production facilities are designed to meet international standards such as DIN and AGMA, ensuring top-tier quality and reliability.

Yieh Chen Machinery Co., Ltd.

Heavy Duty Hydraulic Thread Rolling Machines | YC-970P, YC-860P, YC-750P Models Available

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Hydraulic Through & Infeed Thread Rolling Machine capable of exerting up to 18 tons. (Max OD 35mm or 1.38”) - Hydraulic Through and Infeed Thread Rolling Machines - 2 roll with 18 tons rolling pressure
Hydraulic Through & Infeed Thread Rolling Machine capable of exerting up to 18 tons. (Max OD 35mm or 1.38”)
YC-420

2 Rolls machine with 17 tons rolling pressure. The slide travel and feed rate are adjustable....

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Hydraulic Through & Infeed Thread Rolling Machine for pinion shaft and tiny pitch threading (Max OD 16mm or 5/8”) - Thread Rolling Machine - 2 roll with 4 tons rolling pressure
Hydraulic Through & Infeed Thread Rolling Machine for pinion shaft and tiny pitch threading (Max OD 16mm or 5/8”)
YC-310

Incorporates hydraulic operation with full but simple controls for through and infeed rolling...

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3 Roll Thread Rolling Machine for Tube (Max rolling Outer Diameter 120mm or 4-3/4”) - Thread Rolling Machine
3 Roll Thread Rolling Machine for Tube (Max rolling Outer Diameter 120mm or 4-3/4”)
YC-60AP YC-120A

Incorporates hydraulic operation for mass production of many types of thread forms on hollow...

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3 Roll Thread Rolling Machine for Tube (Max rolling Outer Diameter 60mm or 2-1/4”) - Thread Rolling Machine
3 Roll Thread Rolling Machine for Tube (Max rolling Outer Diameter 60mm or 2-1/4”)
YC-60A

Incorporates hydraulic operation for mass production of many types of thread forms on hollow...

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3 Roll Thread Rolling Machine for Tube (Max rolling Outer Diameter 30mm or 1-1/8”) - Thread Rolling Machine
3 Roll Thread Rolling Machine for Tube (Max rolling Outer Diameter 30mm or 1-1/8”)
YC-30A

Incorporates hydraulic operation and can be applied to through and infeed rolling up to 32mm...

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Cam Driven Thread Rolling Machine (Max rolling Outer Diameter 40 mm or 1- 9 / 16” ) - Thread Rolling Machine
Cam Driven Thread Rolling Machine (Max rolling Outer Diameter 40 mm or 1- 9 / 16” )
YC-30

Incorporating gear speed reduction and cam operated rolling slide for convenient and precise...

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Cam Driven Thread Rolling Machine (Max Outer Diameter 22mm or 7/8”) - Thread Rolling Machine
Cam Driven Thread Rolling Machine (Max Outer Diameter 22mm or 7/8”)
YC-20

Incorporating gear speed reduction and cam operated rolling slide for convenient and precise...

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Cam Driven Thread Rolling Machine (Max Outer Diameter 12.5mm or 1/2”) - Thread Rolling Machine
Cam Driven Thread Rolling Machine (Max Outer Diameter 12.5mm or 1/2”)
YC-3T

Incorporating eccentric cam feed, smart and simple design and ease of operation for producing...

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Thread Rolling Machine w/ Auto Feeder (auto feeding and un-loading)
Thread Rolling Machine w/ Auto Feeder (auto feeding and un-loading)

Yieh Chen provide customized service of design Auto-Feeding system for a wide variety of workpiece....

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Thread Rolling Dies - Thread Rolling Dies
Thread Rolling Dies

Any Kind of Thread can be made such as UNC, UNF, BSW, Metric, ACME, Ball Screw, even Tube Thread.

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Spline Rolling Machine - Spline Rolling Machine
Spline Rolling Machine
YC-800 / YC-1225

Spline rolling (cold roll forming of spline) process will generate excellent surface finishes,...

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Auto Feeder System for YC-800, YC-1225 Spline Rolling Machine - Auto Feeder System for YC-800, YC-1225 Spline Rolling Machine
Auto Feeder System for YC-800, YC-1225 Spline Rolling Machine

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Yieh Chen's Spline Rolling Machines: Essential Equipment for Automotive and Aerospace Drivetrains

Yieh Chen Machinery Co., Ltd. is a leader in the global manufacturing of high-precision gears and transmission components. This ISO9001 & AS9100 certified company, a member of the Six Star Group, offers a comprehensive range of products including spur gears, helical gears, gear racks, worms, worm shafts, and various specialized machines. Yieh Chen's commitment to quality and innovation is evident in their use of advanced technologies and adherence to stringent international standards, making their products essential for diverse and demanding applications in industries such as aerospace and agriculture.

Yieh Chen Machinery Co., Ltd is the affiliate of Six Star Group. Six Star was founded in 1975 by Six brothers and devoted to the manufacturing of precision gear products. Yieh Chen Machinery was established in 1984 into the market of machinery industry and is dedicated to produce Thread rolling machine and Spline rolling machine with high quality and durable lifetime. Yieh Chen Machinery Co., Ltd. is a gear manufacturer of gear for air screw compresser, cnc lathes, machining center, printing machines and more. Also, we providing quality thread rolling machine, spline rolling machine, multi forming machine.

Yieh Chen has been offering customers durable machine tools for manufacturing, both with advanced technology and 40 years of experience, Yieh Chen ensures that each customer's requirements are met.