CF High Vacuum Flexible Bellows | 304/316 Stainless Steel | CF Flange Custom

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Engineered for ultra-high vacuum environments, our CF flexible bellows offer exceptional performance with a vacuum degree of 1.5×10⁻⁵ PA to 1×10⁻¹⁰ PA and a leak rate below 5×10⁻¹⁰ PA*M³/S. These flexible pipes are essential for absorbing axial movement, reducing vibration, and correcting angular or lateral misalignments in complex vacuum systems.

(Note: Bellows length can be selected between 5cm and 5m)

CF Flange SpecOuter Diameter AP.C.D Center DistanceThickness HBellows Inner Dia. BBellows Outer Dia. CBending RadiusBellows Wall ThicknessAxial Expansion Rate (%)
CF1634mm27mm7.3mm16mm29mm35mm0.15mm14%
CF2554mm43mm10.5mm25mm35mm54mm0.15mm16%
CF3570mm58.7mm13mm40mm54mm90mm0.15mm22%
CF5086mm72.4mm16mm50mm65mm110mm0.15mm23%
CF63114mm92.2mm17.5mm63mm86mm120mm0.2mm23%
CF80130mm110mm18mm80mm99mm130mm0.2mm23%
CF100152mm130.3mm20mm100mm125mm140mm0.2mm23%
CF160202mm181mm22mm150mm178mm140mm0.2mm23%
CF200253mm231.8mm24.5mm200mm230mm160mm0.2mm23%
CF250305mm284mm26mm250mm280mm200mm0.2mm23%
What are CF vacuum bellows used for?
CF vacuum bellows are used to provide a flexible connection between rigid vacuum components while accommodating specified axial movement, vibration, or installation misalignment.
Are CF bellows suitable for high-vacuum applications?
Yes. CF bellows with metal-sealed CF flanges are commonly used in high-vacuum and demanding vacuum systems where low leakage and reliable metal sealing are required.
Can CF vacuum bellows accommodate axial movement?
Yes. The bellows can accommodate axial expansion and compression within their specified movement range. The allowable movement depends on the bellows size, length, and configuration.
Can CF bellows help isolate vibration in vacuum systems?
Yes. Flexible bellows can help accommodate and isolate certain mechanical vibrations between connected vacuum components. The actual vibration capability depends on the bellows configuration and operating conditions.
Can CF bellows compensate for installation misalignment?
They can accommodate limited installation movement or misalignment within the specified mechanical range. They should not be used to compensate for excessive or uncontrolled misalignment.
Are CF bellows helium leak tested?
Yes. Helium leak testing can be provided, with the required leak-rate specification confirmed according to the application and configuration.
What vacuum range can CF bellows be used for?
The applicable vacuum range depends on the bellows material, flange configuration, dimensions, and leak-rate requirements. Custom configurations can be specified according to the required vacuum conditions.
Material

304 Stainless Steel, 316L Stainless Steel
Size

CF16, CF25, CF35, CF50, CF63, CF80, CF100, CF160, CF200, CF250
Length (mm)

200 mm, 250 mm, 300 mm, 400 mm, 500 mm, 800 mm, 1000 mm, 1500 mm, 2000 mm, Custom
Country of Origin

China
Leak Testing

100% Helium Leak Tested
Leak Rate

<5 × 10⁻¹⁰ Pa·m³/s
Vacuum Range

1.5 × 10⁻⁵ Pa to 1 × 10⁻¹⁰ Pa

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