Vacuum Accessories
Vacuum Bellows for Efficient Connection and Stable Vacuum in High-Performance Systems
Item Number : KT-VA05
Price varies based on specs and customizations
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Product Application
Vacuum bellows, made from 304 and 316 stainless steel, are essential components in various high-vacuum environments. These bellows are designed to connect different parts of a vacuum system, ensuring efficient and stable operation. Their applications span across multiple industries, including:
- Semiconductor Manufacturing: In the production of semiconductors, maintaining a high vacuum is crucial. Vacuum bellows provide the necessary flexibility and sealing to ensure the integrity of the vacuum environment.
- Vacuum Coating: During the process of vacuum coating, these bellows help in maintaining a stable vacuum, which is essential for the uniform application of coatings.
- Vacuum Metallurgy: In metallurgical processes that require vacuum conditions, these bellows ensure that the vacuum remains stable, facilitating the desired metallurgical reactions.
- Vacuum Freeze Drying: For industries that rely on freeze-drying techniques, vacuum bellows play a key role in maintaining the vacuum, thereby ensuring the quality of the dried products.
- Other Industries: Any industry that requires a high vacuum environment can benefit from the use of vacuum bellows, as they provide the necessary flexibility and sealing to maintain the vacuum.
Product Feature
Vacuum bellows are engineered with several key features that make them indispensable in high-vacuum systems:
- Excellent Sealing Performance: Constructed from high-quality rubber or fluororubber materials, these bellows can withstand extreme vacuum conditions, ensuring that the system remains sealed and operational.
- Good Flexibility: The bellows design allows for significant bending and twisting, making them highly adaptable for various installation scenarios and connection needs.
- Strong Corrosion Resistance: With options for different materials, including stainless steel, these bellows can withstand exposure to various corrosive media, thereby extending their service life.
- A Variety of Specifications: Available in multiple inner diameters, lengths, and connection methods, vacuum bellows can be customized to fit the specific requirements of different vacuum systems.
- Easy Installation and Maintenance: The simple structure of these bellows makes them easy to install and maintain, reducing overall operational costs.
Detail & Parts





Technical specifications
| Parameter | Specification |
|---|---|
| Thickness | KF16/KF25 0.2 and KF40/KF50 0.25 |
| Waveform | Change waveform |
| Wavelength | 5/6.5/8/9 |
| Material | 304 Stainless Steel |
| Tube outer diameter | 26/34/53/64 |
| Chuck tube diameter | 30、40/55/75mm |
| Ultimate vacuum | 0.000000001pa |
| Permeability | Below 5*10^-10pa.m3/s |
| Flexibility | Soft, can be rolled, folded, and stretched appropriately |
| Scope of use | Imported pumps, combination pumps, molecular pumps, diffusion pumps, bipolar rotary vane pumps, cold pumps, vacuum pumps |
| The technical content of the bellows is very high, and helium testing is required to prove the quality, welding process, stainless steel material, thickness, softness, waveform, permeability, absolute vacuum value, metal fatigue, etc. Different grades of bellows should be selected according to the purpose. | |
Measure the outer diameter of the chuck and purchase the corresponding bellows model:
| Chuck outer diameter | Specification |
|---|---|
| 30mm | KF16 |
| 40mm | KF25 |
| 55mm | KF40 |
| 75mm | KF50 |
| The sizes of international standard parts are consistent, and the length can be customized according to customer requirements | |
Introduction to hose and expansion parameters:
The characteristics of thin-walled metal bellows are that they are relatively soft, can be bent and compressed, can vibrate at high frequencies, and can follow the axial movement of the equipment.
| Diameter | Wall thickness | Minimum bending section |
|---|---|---|
| KF16 | 0.15 | ±14% |
| KF25 | 0.15 | ±16% |
| KF40 | 0.15 | ±22% |
| KF50 | 0.15 | ±23% |
| ISO63 | 0.2 | ±26% |
| ISO80 | 0.2 | ±26% |
| ISO100 | 0.2 | ±27.5% |
Introduction and expansion parameters of rigid pipes:
It can absorb vibrations in the pipeline, absorb angles and lateral displacements in the pipeline, and absorb stress caused by piping errors. It absorbs thermal expansion and is easy to install..
| Diameter | Wall thickness | Minimum bending section |
|---|---|---|
| KF16 | 0.15 | 30 |
| KF25 | 0.2 | 70 |
| KF40 | 0.2 | 90 |
| KF50 | 0.25 | 140 |
| ISO63 | 0.25 | 150 |
| ISO80 | 0.25 | 220 |
| ISO100 | 0.25 | 280 |
Working Principle
The working principle of vacuum bellows revolves around their ability to maintain a stable vacuum by providing flexible and sealed connections between different components of a vacuum system. Here’s how they operate:
- Flexible Connection: The bellows are made from highly elastic materials that allow them to bend and twist, facilitating the connection of various components in a vacuum system without compromising the vacuum.
- Pressure Resistance: These bellows are designed to withstand significant pressure differences, ensuring that the vacuum remains stable even under varying conditions.
- Sealing Mechanism: The materials used in the construction of vacuum bellows, such as rubber and fluororubber, provide excellent sealing properties, preventing any leakage that could compromise the vacuum.
- Adaptability: The design of the bellows allows them to adapt to different configurations and installations, making them versatile for various vacuum system setups.
Product Advantage
Vacuum bellows offer several advantages that make them a preferred choice for high-vacuum systems:
- Efficient Connection: These bellows allow for quick and efficient connections between different components of a vacuum system, significantly improving work efficiency and reducing downtime.
- Stable Vacuum: With their excellent sealing performance and pressure resistance, vacuum bellows ensure that the vacuum remains stable over extended periods, facilitating continuous and reliable operation.
- Safe and Reliable: Made from safe and environmentally friendly materials, these bellows have a long service life, reducing the need for frequent replacements and lowering maintenance costs.
- Customizable Options: The availability of various specifications and materials allows for customization to meet the specific needs of different vacuum systems, ensuring optimal performance.
In summary, vacuum bellows made from 304 and 316 stainless steel provide a robust solution for maintaining efficient and stable vacuum environments across various industries. Their versatility, durability, and ease of use make them an indispensable component in high-performance vacuum systems.
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Vacuum Bellows for Efficient Connection and Stable Vacuum in High-Performance Systems
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