Oil-lubricated rotary vane vacuum pumps

Becker U series

The U series comprises robust and durable oil-sealed rotary vane vacuum pumps with a simple design, direct drive and integrated recirculating oil lubrication. An oil cooler and the sound-insulated cover ensure low noise emissions and reliable operation.

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  • 20Models
  • 4Series
  • 40–624m³/h pumping speed at 50 Hz
  • 0.1mbar lowest ultimate pressure
  • 1.1–15kW rated motor power at 50 Hz
Becker U series

Product overview

Products of the Becker U 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.

U4 series 4 models

U 4.400 F/KPumping speed 435 m³/h 50 Hz508 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 11 kW 50 Hz13.2 kW 60 HzVariants 7
U 4.400 SA/KPumping speed 435 m³/h 50 Hz508 m³/h 60 HzUltimate pressure 3 mbarRated motor power 11 kW 50 Hz13.2 kW 60 HzVariants 7
U 4.630 F/KPumping speed 624 m³/h 50 Hz732 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 15 kW 50 Hz18 kW 60 HzVariants 4
U 4.630 SA/KPumping speed 624 m³/h 50 Hz732 m³/h 60 HzUltimate pressure 3 mbarRated motor power 15 kW 50 Hz18 kW 60 HzVariants 4

U O2-PACK series 5 models

U 5.71 O2-PACKPumping speed 70 m³/h 50 Hz84 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 1.5 kW 50 Hz1.8 kW 60 HzVariants
U 5.101 O2-PACKPumping speed 100 m³/h 50 Hz120 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 2.2 kW 50 Hz2.2 – 2.6 kW 60 HzVariants 4
U 5.166 O2-PACKPumping speed 165 m³/h 50 Hz198 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 3 kW 50 Hz3.6 kW 60 HzVariants 4
U 5.201 O2-PACKPumping speed 200 m³/h 50 Hz240 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 4 kW 50 Hz4.5 – 4.8 kW 60 HzVariants 4
U 5.301 O2-PACKPumping speed 300 m³/h 50 Hz360 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 5.5 kW 50 Hz6.6 kW 60 HzVariants

U series 8 models

U 5.40 (XL K)Pumping speed 40 m³/h 50 Hz48 m³/h 60 HzUltimate pressure 1 mbarRated motor power 1.1 kW 50 Hz1.35 kW 60 HzVariants 5
U 5.45Pumping speed 45 m³/h 50 Hz54 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 1.5 – 1.8 kW 50 Hz1.5 – 1.8 kW 60 HzVariants 4
U 5.65 (XL K)Pumping speed 65 m³/h 50 Hz78 m³/h 60 HzUltimate pressure 0.5 mbarRated motor power 1.5 – 1.8 kW 50 Hz1.5 – 1.8 kW 60 HzVariants 4
U 5.71Pumping speed 70 m³/h 50 Hz84 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power 1.5 kW 50 Hz1.8 kW 60 HzVariants 5
U 5.101Pumping speed 100 m³/h 50 Hz120 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power 2.2 kW 50 Hz2.2 – 2.6 kW 60 HzVariants 4
U 5.166Pumping speed 165 m³/h 50 Hz198 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power 3 – 4 kW 50 Hz3.6 – 4.8 kW 60 HzVariants 8
U 5.201Pumping speed 200 m³/h 50 Hz240 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power 4 – 5.5 kW 50 Hz4.5 – 6.6 kW 60 HzVariants 10
U 5.301Pumping speed 300 m³/h 50 Hz360 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power 5.5 – 7.5 kW 50 Hz6.6 – 9 kW 60 HzVariants 9

VARIAIR U series 3 models

VARIAIR U 5.101Pumping speed 140 m³/h 50 Hz140 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power Variants
VARIAIR U 5.201Pumping speed 240 m³/h 50 Hz240 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power Variants
VARIAIR U 5.301Pumping speed 330 m³/h 50 Hz330 m³/h 60 HzUltimate pressure 0.1 mbarRated motor power Variants

Model comparison

About the series

Features and benefits of the U series

The series at a glance

The controlled oil return allows use in the rough vacuum range, while optional water cooling extends the oil life even under demanding conditions. An optional gas ballast reduces the condensation of vapours and protects the pump against a loss of performance.

The U series stands out for its low maintenance requirements, low operating costs, long service life and extensive range of accessories.

With the U series, Becker offers a proven range of oil-lubricated rotary vane vacuum pumps developed for reliable vacuum performance, robust construction and long-lasting operation. The proven pump technology, the compact design and the versatile model variants enable reliable use in numerous industrial applications. Thanks to its service-friendly layout and reliable components, the U series offers an economical solution for a wide variety of vacuum requirements.

Reliable vacuum performance

The Becker U series provides reliable and constant vacuum generation for a wide range of industrial applications. The proven oil-lubricated rotary vane principle enables efficient compression and stable operation even over long operating periods.

Robust and durable design

The robust construction and the proven pump technology are designed for reliable continuous operation. The pump oil ensures effective lubrication and sealing of the moving components and thus supports a long service life and high operational reliability.

Versatile and easy to maintain

The various models and versions of the U series allow flexible adaptation to different vacuum requirements. The service-friendly design makes maintenance work easier and contributes to economical operation over the entire service life of the pump.

Operating principle

The Becker U series works on the proven principle of oil-lubricated rotary vane vacuum technology. An eccentrically mounted rotor with vanes rotates inside the pump housing, creating continuously changing working chambers. The air drawn in is compressed as the volume of the working chambers decreases and is then expelled through the outlet.

The pump oil performs important functions for lubrication, sealing and heat dissipation and thus supports reliable and efficient pump operation. Depending on the version, the pumps can be equipped with additional functions and components for different operating conditions.

The robust design and the proven rotary vane principle ensure reliable vacuum generation, a long service life and economical operation. The U series is suitable for numerous industrial applications and, depending on the model, can be adapted to different vacuum requirements.

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

Standard operating conditions and performance

  • Ambient temperature: 5 to 40 °C
  • Designed for oil-lubricated vacuum applications

Frequently asked questions

Questions about the Becker U series

Which models does the Becker U series comprise?
The Ehrler & Beck catalogue lists 20 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 40 to 624 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 0.1 and 3 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 Becker U 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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