A turbomolecular pump is a multistage axial-flow turbine in which high speed rotating blades provide compression by increasing the probability of gas moving in the pumping direction. The turbomolecular pump is optimised for molecular flow conditions and requires a suitably sized backing pump to exhaust to atmosphere.
nEXT turbomolecular pumps are built on decades of experience and are drawing from our tried and trusted EXT and STP ranges. nEXT pumps offer superior performance, reliability and end user serviceability, setting the benchmark for scientific turbomolecular pumps.
nEXT has been designed to combine all the latest technological advances in turbomolecular pumps providing end-user serviceability and delivering a truly class leading product. Pump sizes available offering true 85, 240, 300 and 400 litres per second pumping speed performance (N2).
Conventional turbomolecular pump rotors are designed to deliver either high speed or high compression. To eliminate this compromise the blade arrangements on the nEXT rotor have been totally re-designed to optimise pump performance and achieve both higher speeds and higher compression. The end result is an exceptional pumping performance for a pump of its size.
The nEXT85 turbomolecular pump is our latest addition to the Edwards product portfolio, and set to be a real winner across the R&D, High Energy Physics and Analytical Instrument sectors.
nEXT85 pump builds upon the success of the highly successful EXT75DX to deliver a pump with significantly improved performance, in a reduced footprint. In addition to enhanced performance the nEXT85 benefits from the same service and operational functionality as the larger nEXT, including field serviceability and in-built intelligence, for a truly class leading product.
The pump has been totally re-designed to optimise performance and achieve both greater speeds and higher compressions, while maintaining increased levels of reliability in a small package.
nEXT85 is the latest member of the popular Edwards nEXT range of turbomolecular pumps. It builds on the ever popular EXT range with increased performance, improved features and benefits, and all in a reduced footprint. Here John Wood, Product Manager Edwards, gives you an introduction to this great new turbomolecular pump.
With an increased customer choice of standard and higher compression variants, Edwards nEXT85 turbomolecular pump is able to offer superior performance for all needs, and yet is the smallest pump in its class on the market.
In order to get the very lowest pressure, we decided to launch our new nEXT85 to the edge of space, 32km above the earth.... but it turns out all we had to do was turn it on.
The manufacturing hub of nEXT. Our Lutin manufacturing facility has been in operation since 1999 and is Edwards’ global manufacturing base, located in Czech Republic. The 13,000 sqm facility includes 80+ precision manufacturing tools, state-of-the-art 550 sqm ISO 7 rated clean room, and is home to 450 employees.
|Inlet flange||DN40||DN63 ISO-K or DN63CF||DN100 ISO-K||DN100 ISO-K or DN100CF||DN100 ISO-K or DN100CF||DN160 ISO-K or DN160-CF|
|Inlet Pumping Speed ls-1||N2||47||84||84||240||300||400|
|H2||49/44 (D/H)||60/54 (D/H)||60/54 (D/H)||165||280||325|
|Compression Ratio (D)||N2||>1 x 1011||>1 x 1011||>1 x 1011||>1 x 1011||>1 x 1011||>1 x 1011|
|Ar||>1 x 1011||>1 x 1011||>1 x 1011||>1 x 1011||>1 x 1011||>1 x 1011|
|He||8 x 106/2 x 107 (D/H)||3 x 105||1 x 106||1 x 108|
|H2||2 x 105/5 x 105 (D/H)||1 x 104||5 x 104||5 x 105|
|Compression ratio (T/H)||N2||>1 x 1011||>1 x 1011||>1 x 1011|
|He||1 x 106||3 x 106||>1 x 108|
|H2||1.5 x 104||1 x 105||1 x 106|