Biosubstrator® slow-running biogas rod agitators

Technical specifications

TypePower ratingCurrent ratingNominal speedCirculating rate *)Thrust force
  [kW] [A] [U/min] [m³/h] [N]
BIOS 114G 11 21,5 54 ca. 6.600 ca. 6.000

*) Circulating rate calculated for water, for comparison purposes

Motor 400+/-10% VAC, rated frequency 50 Hz, index of protection IP 54

Dimensions and weights

Propeller diameter 1.500 mm
Required wall opening Chamber lining 600 x 600 mm or core hole 500 mm
Required cover opening
for lifting out the agitator shaft
1.500x1.20 mm
Total weight approx. 900 – 1300 kg depending on the version
Installation of Biosubstrator® biogas rod agitator in fermenters with gas hood and concrete cover
streisal Biosubstrator® for fermenters with gas hood or concrete cover


Agitator shaft Solid, made of high-strength steel with acid-resistant
polyolefin protective jacket
Parts flushed with gas in the fermenter Stainless steel 1.4571 (V4A)
Parts outside the fermenter Galvanised or painted/coated
Propeller (Ø 1.500 mm) Stainless steel 1.4301 (V2A)


  • ATEX-certified version for use in explosion protection zones 1 and 2
  • Frequency inverter with parameterised safety software (torque limiting, etc.)