Oil-lubricated rotary vane vacuum pumps

Edwards nES and nES Ex series

The Edwards nES and nES Ex series at a glance: 13 models from the field of oil-lubricated rotary vane vacuum pumps – with technical data, variants and the option to send an enquiry.

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  • 13Models
  • 2Series
  • 38.5–755m³/h pumping speed at 50 Hz
  • 0.08mbar lowest ultimate pressure
  • 1.3–18.5kW rated motor power at 50 Hz
Operating principle: Oil-lubricated rotary vane vacuum pumps (schematic drawing)
Operating principle: Oil-lubricated rotary vane vacuum pumps

Product overview

Products of the Edwards nES and nES Ex series

Use the filters on the left to narrow the models down by their key figures. Each row leads to the model with its technical data and variants.

nES Ex series 5 models

Edwards nES40 ExPumping speed 38.5 m³/h 50 Hz47 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 1.5 kW 50 Hz1.8 kW 60 HzVariants 1
Edwards nES65 ExPumping speed 54 m³/h 50 Hz64 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 2.2 kW 50 Hz2.5 kW 60 HzVariants 1
Edwards nES100 ExPumping speed 87.5 m³/h 50 Hz105 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 3 kW 50 Hz3.6 kW 60 HzVariants 1
Edwards nES300 ExPumping speed 240 m³/h 50 Hz290 m³/h 60 HzUltimate pressure 0.15 mbarRated motor power 7.5 kW 50 Hz9 kW 60 HzVariants 1
Edwards nES630 ExPumping speed 640 m³/h 50 HzUltimate pressure 0.08 mbarRated motor power Variants 1

nES series 8 models

Edwards nES40Pumping speed 38.5 m³/h 50 Hz47 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 1.3 kW 50 Hz1.3 kW 60 HzVariants 3
Edwards nES65Pumping speed 54 m³/h 50 Hz64 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 1.8 kW 50 Hz1.8 kW 60 HzVariants 3
Edwards nES100Pumping speed 87.5 m³/h 50 Hz105 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 3 kW 50 Hz3.6 kW 60 HzVariants 4
Edwards nES220Pumping speed 179 m³/h 50 Hz214 m³/h 60 HzUltimate pressure 0.08 mbarRated motor power 4.4 kW 50 Hz5.5 kW 60 HzVariants 2
Edwards nES300Pumping speed 240 m³/h 50 Hz290 m³/h 60 HzUltimate pressure 0.08 mbarRated motor power 5.5 kW 50 Hz6.6 kW 60 HzVariants 3
Edwards nES300SPumping speed 284 m³/h 50 Hz330 m³/h 60 HzUltimate pressure 0.08 mbarRated motor power 6 kW 50 Hz7.2 kW 60 HzVariants 2
Edwards nES630Pumping speed 640 m³/h 50 Hz755 m³/h 60 HzUltimate pressure 0.08 mbarRated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants 5
Edwards nES750Pumping speed 755 m³/h 50 HzUltimate pressure 0.08 mbarRated motor power 18.5 kW 50 HzVariants 4

Model comparison

About the series

Technology and features

Operating principle

Rotary vane technology allows vacuum pumps of a technically simple design. A consistently high vacuum level in continuous operation is ensured by the circulating oil lubrication, perfectly matched materials and modern, precise manufacturing techniques. The oil separator with integrated oil return provides clean, oil-free exhaust air. A further advantage over other technologies is the low purchase cost.

The technology page shows the operating principle with an interactive drawing: Oil-lubricated rotary vane vacuum pumps.

Features of the series

  • Connections optionally to ISO or with G thread
  • Gas ballast for pumping condensable vapours
  • Low noise and vibration levels
  • Low life cycle costs thanks to efficiently cooled motors, low pump temperature and low maintenance requirements
  • Optimised oil return and separation system with integrated oil mist filters for low oil losses
  • Stable vacuum performance without pressure fluctuations thanks to optimised oil distribution; high pumping speed at low pressures

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

Frequently asked questions

Questions about the Edwards nES and nES Ex series

Which models does the Edwards nES and nES Ex series comprise?
The Ehrler & Beck catalogue lists 13 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 38.5 to 755 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?
Depending on the model, the ultimate pressure lies between 0.08 and 0.5 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 oil-lubricated rotary vane 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 nES and nES Ex 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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