Screw vacuum pumps

Leybold DURADRY series

The Leybold DURADRY series at a glance: 3 models from the field of screw vacuum pumps – with technical data, variants and the option to send an enquiry.

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  • 3Models
  • 160–450m³/h pumping speed at 50 Hz
  • 0.01mbar ultimate pressure
  • 7.5–11kW rated motor power at 50 Hz
Leybold DURADRY series – Shown: DURADRY DD 160
Shown: DURADRY DD 160

Product overview

Products of the Leybold DURADRY series

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

DURADRY DD 160Pumping speed 160 m³/h 50 Hz160 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants 2
DURADRY DD 250Pumping speed 250 m³/h 50 Hz250 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants 2
DURADRY DD 450Pumping speed 450 m³/h 50 Hz450 m³/h 60 HzUltimate pressure 0.01 mbarRated motor power 11 kW 50 Hz11 kW 60 HzVariants 1

About the series

Technology and features

Operating principle

Dry screw vacuum pumps convey the gas from the inlet to the outlet with two screw rotors that intermesh without contact. The pump chamber is oil-free; the pumps reach rough and medium vacuum in a single stage, are insensitive to water vapour and particles and are suitable for continuous operation.

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

Features of the series

  • Hermetically tight: dynamic seal, no oil leakage
  • Quiet: less than 64 dB(A) with silencer, low vibration
  • PFPE-ready: lubricant LEYBONOL LVO 410 for high temperatures, high oxygen concentrations and slightly corrosive conditions
  • Patented screw rotor profile: dry compression, maximum rotor speed 6600 min⁻¹
  • Smart Drive: monitors rotor frequency and temperatures for self-protection
  • Stable thermal management: stainless steel cooling system against corrosion

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

Frequently asked questions

Questions about the Leybold DURADRY series

Which models does the Leybold DURADRY series comprise?
The Ehrler & Beck catalogue lists 3 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 160 to 450 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 0.01 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 screw 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 Leybold DURADRY 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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