DBSt 820 DBSt 820-200, 3Ph 345-415 V Δ / 600-720 V Y 50 Hz, 380-480 V Δ / 660-720 V Y 60 Hz

Atlas Copco DBSt 820 – single-stage side channel blower with two impellers working in parallel

Depending on the model, the DBSt 820 delivers up to 820 m³/h at 50 Hz and up to 1050 m³/h at 60 Hz. According to the data sheet, it reaches down to −200 mbar in vacuum operation and up to +180 mbar in compressor operation. The motor power is 7.5–8.6 kW (IE3). Dimensions up to 500 × 577 × 550 mm (L × W × H), weight 90.1 kg, inlet and outlet G 2 1/2" (DN 65). 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 twin impellers of the DBSt range, working in parallel, deliver up to 2050 m³/h at a vacuum of up to −310 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 DBSt 820

The DBSt 820 is available from Ehrler & Beck in one variant: 8055810028 (DBSt 820-200). 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	820
Pumping speed 60Hz	1,050
Rated motor power 50Hz	7.5
Rated motor power 60Hz	8.6
Motor efficiency class	IE3
Weight	90.1
Length	50
Width	57.7
Height	55
Inlet connection flange	G 2 1/2"
Outlet connection flange	G 2 1/2"
Noise level	74 dB(A)
Cooling method	Air cooling
Oil type	Oil-free

Additional technical data