UHV Bell Chamber

Available for Quote


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Sales: +44 (0) 1323 379 379

Email: sales@vacgen.com

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  • Minimum Order £100
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  • Extensive support

Our chambers can be custom designed, ensuring they are tailored to your individual needs for your specific applications. Our extensive history in chamber manufacturing guarantees we can provide you with the right support and technical services from the moment you request a quotation to the day you recieve your chamber.

Chamber Material Details:

We can offer the Lollipop Hemisphere Chamber in two different materials:

Lollipop Hemisphere Chamber Material
Material Type Description
Nicked Based Super Alloy (NiFe) A soft ferromagnetic metal with a very high permeability
Stainless Steel 304L or 316L available as standard body and tube material

Chamber Body Details:

The following chambers are formed from standard skeletons;

Lollipop Hemisphere Body Details 
Chamber Type Chamber Material Flange OD Bottom Port Top Port Maximum Body Length  
Bell Chamber Stainless Steel  305 mm        
Bell Chamber NiFe (Mu Metal) 305 mm        

Chamber Port Details:

Specifications for standard port sizes and focal point tolerance

Standard Port Sizes
Flange VG Flange Part Number Flange OD Bolt Hole PCD Number of Bolt Holes
DN19CF CF34-19 34.10mm 27.00mm 6
  CF70-44 69.90mm 58.70mm 6
DN70CF CF114-70 113.50mm 92.20mm 8
DN100CF CF152-108 151.50mm 130.30mm 16
DN150CF CF203-156 202.50mm 181.00mm 20
DN200CF CF253-206 253.00mm 231.80mm 24
DN250CF CF305M-256 305.00mm 284.00mm 32
  CF337-254 336.60mm 306.30mm 30
DN300CF CF368-305 368.30mm 338.10mm 32
Port Length Analyser Port (Only) Phi & Theta Angle General Tolerance
General ±1mm ±0.5 mm ±0.5° R2.0 mm

Tube Sizes:

Tube sizes as part of the standard configurable range

Tube Sizes
Stainless Steel NiFe (Mu Metal)
ØA  mm T1  mm ØA mm   T1 mm T2 mm
19.05 1.2 44.3 1.5 1.5
44.3 1.5 70 2 3
69.9 2 108 3 5
108 2 156 3 5
156 3 206 3 5
206 3  

Additional Details:

Extra Details
Surface Treatments Available Maximum Size mm (W x D x H) Optional RGA Analsis
Satin Polished - Standard Configurable Bespoke Size mm - 700 x 700 x 1000
Bead Blasting  600 x 600 x 1000 700 x 700 x 1000 Maximum Mass 500kg
Electro Polished Max. Mass 125kg Max. Mass 500kg Maximum Temp. 250°c

Please note: Electro Polished Finish and Vacuum Annealing are available at an additional cost and extended lead time. Please tell us about any additional processing when enquiring about a chamber design. Standard Flange Grade is 304L.

Standard tolerances are ±1mm on Port Length, Analyser Port ±0.5mm. Phi & Theta Angles ±0.5°. General Tolerance R2.0mm


Why choose our chambers

  • The chamber will be leak tested before delivery.
  • We are able to guarantee a leak rate of 2 x 10-10 mbar L/s.
  • Extensive history in chamber manufacturing
  • Fast quotation process
  •  The chamber tolerances and ports will be measured and included in the CMM report.
  • Large product portfoilio
  • ISO Standard 9001:2015
  • UHV Cleaned Repeating/ Configurable Chambers Maximum Mass 125kg
  • Standard Finish - Satin Polished