Side channel blowers

Atlas Copco DB series

The Atlas Copco DB series comprises robust, reliable and virtually maintenance-free side channel blowers for vacuum and pressure applications. Designed for use worldwide, the blowers stand out for their quiet operation, high efficiency and long service life.

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  • 64Models
  • 4Series
  • 65–2,050m³/h pumping speed at 50 Hz
  • 480mbar lowest ultimate pressure
  • 0.37–25kW rated motor power at 50 Hz
Atlas Copco DB series

Product overview

Products of the Atlas Copco DB 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.

DBD series 6 models

DBD 90Pumping speed 91 m³/h 50 Hz110 m³/h 60 HzUltimate pressure 650 – 700 mbarRated motor power 1.1 – 1.5 kW 50 Hz1.3 – 1.7 kW 60 HzVariants 2
DBD 180Pumping speed 181 m³/h 50 Hz218 m³/h 60 HzUltimate pressure 550 – 600 mbarRated motor power 3 – 4 kW 50 Hz3.5 kW 60 HzVariants 2
DBD 240Pumping speed 236 m³/h 50 Hz285 m³/h 60 HzUltimate pressure 550 – 600 mbarRated motor power 4 – 5.5 kW 50 Hz4.8 – 6.5 kW 60 HzVariants 2
DBD 310Pumping speed 310 m³/h 50 Hz374 m³/h 60 HzUltimate pressure 600 mbarRated motor power 5.5 kW 50 Hz6.5 kW 60 HzVariants 1
DBD 390Pumping speed 390 m³/h 50 Hz466 m³/h 60 HzUltimate pressure 600 mbarRated motor power 7.5 kW 50 Hz9 kW 60 HzVariants 1
DBD 430Pumping speed 430 m³/h 50 Hz519 m³/h 60 HzUltimate pressure 600 mbarRated motor power 7.5 kW 50 Hz9 – 11 kW 60 HzVariants 2

DBDt series 17 models

DBDt 70Pumping speed 65 m³/h 50 Hz76 m³/h 60 HzUltimate pressure 560 mbarRated motor power 1.5 kW 50 Hz1.75 kW 60 HzVariants 1
DBDt 110Pumping speed 110 m³/h 50 Hz130 m³/h 60 HzUltimate pressure 800 mbarRated motor power 0.85 kW 50 Hz0.95 kW 60 HzVariants 1
DBDt 120Pumping speed 120 m³/h 50 Hz145 m³/h 60 HzUltimate pressure 500 – 760 mbarRated motor power 1.1 – 4 kW 50 Hz1.3 – 4.6 kW 60 HzVariants 2
DBDt 140Pumping speed 139 m³/h 50 Hz168 m³/h 60 HzUltimate pressure 700 mbarRated motor power 2.2 kW 50 Hz2.6 kW 60 HzVariants 1
DBDt 150Pumping speed 150 m³/h 50 Hz180 m³/h 60 HzUltimate pressure 670 mbarRated motor power 2.2 kW 50 Hz2.55 kW 60 HzVariants 1
DBDt 170Pumping speed 165 m³/h 50 Hz195 m³/h 60 HzUltimate pressure 480 mbarRated motor power 5.5 kW 50 Hz6.3 kW 60 HzVariants 1
DBDt 210Pumping speed 215 m³/h 50 Hz259 m³/h 60 HzUltimate pressure 600 – 650 mbarRated motor power 3 – 4 kW 50 Hz3.5 – 4.8 kW 60 HzVariants 2
DBDt 230Pumping speed 230 m³/h 50 Hz275 m³/h 60 HzUltimate pressure 610 – 660 mbarRated motor power 3 – 4 kW 50 Hz3.45 – 4.6 kW 60 HzVariants 2
DBDt 310Pumping speed 312 m³/h 50 Hz376 m³/h 60 HzUltimate pressure 600 – 750 mbarRated motor power 4 – 5.5 kW 50 Hz4.8 – 9 kW 60 HzVariants 3
DBDt 320Pumping speed 320 m³/h 50 Hz380 m³/h 60 HzUltimate pressure 580 mbarRated motor power 5.5 kW 50 Hz6.3 kW 60 HzVariants 1
DBDt 420Pumping speed 416 m³/h 50 Hz502 m³/h 60 HzUltimate pressure 600 – 650 mbarRated motor power 5.5 – 7.5 kW 50 Hz6.5 – 9 kW 60 HzVariants 2
DBDt 520Pumping speed 518 – 520 m³/h 50 Hz620 – 625 m³/h 60 HzUltimate pressure 570 – 650 mbarRated motor power 7.5 – 11 kW 50 Hz8.6 – 12.6 kW 60 HzVariants 4
DBDt 660Pumping speed 657 m³/h 50 Hz793 m³/h 60 HzUltimate pressure 550 – 650 mbarRated motor power 11 – 15 kW 50 Hz13 – 17 kW 60 HzVariants 2
DBDt 800Pumping speed 804 m³/h 50 Hz970 m³/h 60 HzUltimate pressure 550 – 700 mbarRated motor power 11 – 15 kW 50 Hz13 – 22 kW 60 HzVariants 3
DBDt 900Pumping speed 903 m³/h 50 Hz1,089 m³/h 60 HzUltimate pressure 600 – 650 mbarRated motor power 15 – 18.5 kW 50 Hz17 – 22 kW 60 HzVariants 2
DBDt 1010Pumping speed 1,007 m³/h 50 Hz1,216 m³/h 60 HzUltimate pressure 600 – 700 mbarRated motor power 18.5 – 22 kW 50 Hz22 – 26 kW 60 HzVariants 2
DBDt 1110Pumping speed 1,110 m³/h 50 Hz1,310 m³/h 60 HzUltimate pressure 560 – 700 mbarRated motor power 12.5 – 20 kW 50 Hz14.5 – 23 kW 60 HzVariants 2

DBS series 29 models

DBS 70Pumping speed 74 m³/h 50 Hz89 m³/h 60 HzUltimate pressure 850 – 900 mbarRated motor power 0.37 – 0.55 kW 50 Hz0.42 – 0.65 kW 60 HzVariants 2

DBSt series 12 models

Model comparison

Spare parts and accessories for the DB models are listed under Atlas Copco spare parts and accessories.

About the series

Features and benefits of the DB series

The series at a glance

The series comprises four designs: DBS (single-stage, one impeller), DBD (two-stage, one impeller), DBSt (single-stage, two impellers) and DBDt (two-stage, two impellers). Depending on the version, flow rates of up to 2,050 m³/h and vacuum levels down to -450 mbar are possible. The DB series is suitable for numerous industrial applications, including pneumatic conveying, packaging, printing, waste water treatment, surface drying, pick & place systems and vacuum tables.

With the DB series, Atlas Copco offers a proven range of side channel blowers developed for clean operation, reliable performance and low maintenance requirements. The robust design and the contact-free, oil-free side channel principle enable reliable use in numerous industrial applications. Thanks to its low-wear operation, the DB series offers an economical solution for vacuum and pressure processes that require clean, oil-free air.

Outstanding energy efficiency

The DB series is not only powerful but also remarkably energy-efficient across the entire range. All models are fitted as standard with IE3 motors that comply with the Ecodesign Directive 2009/125/EC and meet the cURus standards for the US and Canadian markets.

Quiet operation

Thanks to a sophisticated blade design and integrated silencers on both the suction and the discharge side, the DB series operates with minimal noise, which makes for a more pleasant working environment.

Uncontaminated exhaust air

The DB series works on a contact-free, oil-free principle. This means that the exhaust air remains free of oil and dust contamination, which safeguards the integrity of the working environment.

Operating principle

The Atlas Copco DB series works on the side channel principle. An impeller with a large number of blades rotates inside the housing without contact. The blades accelerate the air drawn in, and centrifugal force pushes it outwards into the side channel; from there it flows back into the next blade chamber and is accelerated again. In this way the pressure rises step by step on the way from the inlet to the outlet.

As the impeller does not touch the housing, the DB series operates oil-free and with little wear. The conveyed medium does not come into contact with oil or other lubricants, and the exhaust air stays clean.

The blowers can be used for vacuum as well as for pressure. The robust design and the low-maintenance principle enable reliable continuous operation in numerous industrial applications.

The technology page shows the operating principle with an interactive drawing: Side channel blowers.

Standard operating conditions and performance

  • Ambient temperature: 0 to 40 °C
  • Achievable vacuum: down to approx. -450 mbar (differential pressure), depending on the model
  • Designed for oil-free vacuum and pressure applications

Frequently asked questions

Questions about the Atlas Copco DB series

Which models does the Atlas Copco DB series comprise?
The Ehrler & Beck catalogue lists 64 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 65 to 2,050 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 480 and 900 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 side channel blowers. 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 Atlas Copco DB 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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