Roots vacuum pumps

Edwards nXRi series

The Edwards nXRi series at a glance: 5 models from the field of Roots vacuum pumps – with technical data, variants and the option to send an enquiry.

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  • 5Models
  • 30–120m³/h pumping speed at 50 Hz
  • 0.03mbar ultimate pressure
Operating principle: Roots vacuum pumps (schematic drawing)
Operating principle: Roots vacuum pumps

Product overview

Products of the Edwards nXRi series

Each row leads to the model with its technical data and variants.

Edwards nXR30iPumping speed 30 m³/h 50 Hz30 m³/h 60 HzUltimate pressure 0.03 mbarVariants 1
Edwards nXR40iPumping speed 40 m³/h 50 Hz40 m³/h 60 HzUltimate pressure 0.03 mbarVariants 1
Edwards nXR60iPumping speed 60 m³/h 50 Hz60 m³/h 60 HzUltimate pressure 0.03 mbarVariants 1
Edwards nXR90iPumping speed 90 m³/h 50 Hz90 m³/h 60 HzUltimate pressure 0.03 mbarVariants 1
Edwards nXR120iPumping speed 120 m³/h 50 Hz120 m³/h 60 HzUltimate pressure 0.03 mbarVariants 1

About the series

Technology and features

Operating principle

Multi-stage Roots vacuum pumps compress the gas through several Roots stages arranged in series directly against atmospheric pressure and need no backing pump to do so. The pump chamber is dry and contact-free; gears and bearings are separated from the gas chamber.

The technology page shows the operating principle with an interactive drawing: Roots vacuum pumps.

Features of the series

  • Operation at the unit or remotely via parallel or serial interface; USB port for monitoring with the Edwards nST2 software
  • Single-phase controller for 100–127 V and 200–240 V, 50/60 Hz: the same performance worldwide
  • Pump chamber free of oil and dust – no contamination of the process, no oil odour
  • Additional connection for automatic switching of valves, e.g. a vacuum isolation valve as protection in the event of a power failure

Manufacturer's data as given in the product descriptions of the individual models.

Frequently asked questions

Questions about the Edwards nXRi series

Which models does the Edwards nXRi series comprise?
The Ehrler & Beck catalogue lists 5 models of the series. The product overview names each model with its key figures and the number of its variants; the model page shows the technical data.
Which pumping speeds does the series cover?
At 50 Hz the models cover pumping speeds from 30 to 120 m³/h. The figure comes from the product data of the individual models; values for 60 Hz, where available, are given in the product overview.
What ultimate pressure do the models of the series reach?
The ultimate pressure is 0.03 mbar. The figures on the page of the respective model are decisive.
How does the technology of the series work?
The series belongs to the field of Roots vacuum pumps. The technology page explains the operating principle with an interactive drawing and names all series of this technology.
Does Ehrler & Beck supply spare parts and service for the Edwards nXRi series?
Yes. Ehrler & Beck supplies the models of the series as well as spare parts and accessories and takes care of maintenance and repair. For a quotation, an enquiry with the model or part number is all it takes.

Which model fits your process?

Tell us the gas to be conveyed, the working pressure and the flow rate you need – we will advise you on selection, spare parts and service.

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