IRIE KOKEN's basic technology lies in the production of metal bellows.
In particular, we are focusing on the precision bellows field that requires high performance and high reliability, and are widely used in the vacuum field.
By combining these features, it can be used not only as an expansion joint for piping, but also for semiconductors, liquid crystals, vacuum equipment, etc., by taking advantage of its excellent airtightness.
It is used in a wide range of fields such as accelerators, nuclear fusion, nuclear power, petrochemicals, railways, medical care, and construction.
Combining these features, the product is used not only as an expansion joint for piping, but also for its excellent airtightness in a wide range of fields, including semiconductors, liquid crystal, and vacuum equipment, as well as accelerators, nuclear fusion, nuclear power, petrochemicals, railroads, medical care, and construction.
There are several types of bellows, depending on the manufacturing method and the specific application. We handle the following three types.
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Type | Expantion contraction properties |
Airtightness | Springiness | Pressure Resistance |
Bendability | Washability | Mixing of foreign matter |
Mass Producibillity |
Price |
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Welding | ◎ | ◎ | Soft | ◎ | ◎ | △ | △ | ○ | ○ |
Molding | ○ | ◎ | Hard | ○ | ○ | ○ | ○ | ◎ | ◎ |
Flexi | × | ◎ | × | × | ◎ | ○ | ○ | ○ | ◎ |
Features may very depending on the materials used and usage enviropment.
We respond to demand by dividing our products into standard products and individually designed products.
If the usage conditions of the bellows meet the standard specifications of the standard product, the standard product, which is advantageous in terms of delivery time and price, is convenient.Even if standard products cannot be used, we will propose optimal designs for various uses, so please feel free to contact us.
Bellows materials are selected according to the environment in which they will be used, taking into consideration corrosion resistance, magnetism, and heat resistance.If there are no specific conditions to consider, we will consider materials that are more compact and less expensive within the specifications.
If the conditions of use are clear, we will set the lifespan according to those conditions. If there are conditions that can be changed, we can consider the conditions of use based on the lifespan you ordered. Generally, we receive requests for a lifespan between 10,000 and 1,000,000 cycles.
The longer bellows are, the more they buckle and meander due to springiness and pressure. This phenomenon inhibits smooth movement and can cause a decrease in service life, so a mechanism must be provided inside or outside the bellows to prevent buckling and snaking. The length is determined by considering the interference with structures around the bellows, etc. Please contact us.
Please take a look at the technical information on bellows.
For document requests and inquiries,
Please contact us using the email form below or by phone.