DBS 420 DBS 420-180, 3Ph 200-240 V Δ / 345-415 V Y 50 Hz, 220-275 V Δ / 380-480 V Y 60 Hz

Atlas Copco DBS 420 – single-stage side channel blower with single impeller

Depending on the model, the DBS 420 delivers up to 420 m³/h at 50 Hz and up to 500 m³/h at 60 Hz. According to the data sheet, it reaches down to −260 mbar in vacuum operation and up to +290 mbar in compressor operation. The motor power is 2.2–4.6 kW (IE3). Dimensions up to 389 × 466 × 384 mm (L × W × H), weight 32.6–44 kg, inlet and outlet G 2" (DN 50). Atlas Copco marks the data sheets of the models with part number 8055810… as preliminary (as of 09/2024).

Oil-free side channel principle

According to Atlas Copco, the DBS range with single impeller is suitable for volume flows up to 1370 m³/h at a vacuum of up to −360 mbar (50 Hz). The impeller accelerates the air in the side channels without contact; there is no oil, no oil filter and no exhaust filter, and the exhaust air stays clean.

Applications of the range

Atlas Copco lists, among others, pad printing, paper cutting, roller cleaning, yarn processing, pneumatic conveying, vacuum tables, drying, the extraction of condensate, paint mist, chips and dust, and waste water treatment.

Variants of the DBS 420

The DBS 420 is available from Ehrler & Beck in two variants: 8055810020 (DBS 420-180), 8055810021 (DBS 420-260). The limit values of each variant – vacuum and compressor operation, 50 and 60 Hz – are given in the technical data.

Features of the DB series

• Highly efficient: IE3 motors as standard
• Low noise level thanks to the blade geometry and integrated silencers on the suction and pressure sides
• Clean and oil-free: contact-free operating principle without contamination of the exhaust air
• Fully enclosed aluminium housing, motor with thermal protection, durable bearings
• Modular design, virtually maintenance-free
• Compact footprint, can be used as a vacuum pump or compressor

Pumping speed 50Hz	420
Pumping speed 60Hz	500
Rated motor power 50Hz	2.2
Rated motor power 60Hz	2.55
Motor efficiency class	IE3
Weight	32.6
Length	38.9
Width	41.1
Height	38.4
Inlet connection flange	G 2"
Outlet connection flange	G 2"
Noise level	70 dB(A)
Cooling method	Air cooling
Oil type	Oil-free

Additional technical data