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  6. "Metal bellows" expand and contract with a bellows structure, achieving both flexibility and airtightness!

"Metal bellows" expand and contract with a bellows structure, achieving both flexibility and airtightness!

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last updated:Sep 11, 2025

東京鋲兼
東京鋲兼
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It can be stretched or bent in the axial direction! For movable units and joints that require flexibility and airtightness.

"Metal bellows" are products formed using metals such as phosphor bronze and stainless steel, featuring wave-like folds in a tubular shape, providing elasticity, airtightness, and spring properties. "Bellows" refers to the English word meaning "accordion" in Japanese, resembling the bending parts of an accordion or a straw. 【Features of Metal Bellows】 ■ They have a structure that allows for axial expansion and bending, excelling in airtightness, elasticity, and pressure resistance. ■ Stable mass production is achieved through collaborative automatic production with original molding machines and skilled technicians. ■ Small-lot, diverse production is possible, even for just a few pieces. ■ Bellows can be manufactured according to design specifications such as material, plate thickness, number of waves, spring constant, and end shape. ■ We also support the assembly of bellows, reducing and streamlining operations through the consolidation of orders. *For more details, please refer to the PDF document or feel free to contact us.

    Other metal materials
Bellow-1.png

"Metal bellows" expand and contract with a bellows structure, achieving both flexibility and airtightness!

Bellow-1.png
Bellow-1.png Bellow-2.png Bellow-3.png Bellow-5.png Bellow-4.png Bellow-6.png Bellow-7.png Bellow-8.png Bellow-9.png
  • Related Link - https://www.byokaneworld.com/
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basic information

【Compatible Sizes and Materials】 ■ Outer diameter size: 11.5 to 148.0 mm ■ Inner diameter size: 7.8 to 125.0 mm ■ Plate thickness: 0.08 to 0.25 mm ■ Materials: Stainless steel, phosphor bronze, beryllium, Hastelloy, etc. ■ The number of peaks, spring constant, plate thickness, and end shape can be designed to match the customer's mounting hardware shape. Please feel free to contact us. *Manufacturer: Tokyo Bellow Seiki Co., Ltd.

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■Products that require pressure detection (pressure switches, accelerators, etc.) ■Products that require power transmission (couplings, control devices, etc.) ■Seal products that require airtightness (vacuum equipment such as vacuum pumps, etc.) *For more details, please refer to the PDF document or feel free to contact us.

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Metal bellows

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東京鋲兼

東京鋲兼

Machine elements and parts

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As various industries undergo a transformation due to advancements in IoT, changes in power sources, the expansion of AI applications, and a shift towards systems that do not rely on human labor in manufacturing, we are proposing various solutions tailored to our customers' needs.

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