vertical/inclined agitators

  • Technology
  • Applications
  • Special features


Power range 1 – 30 kW
Mains frequency 50 or 60 Hz
Circulating rate up to 25,000 m³/h
Propeller diameter up to 2,800 mm
Shaft cross-section solid from 100 x 100 mm
to 200 x 200 mm
Temperature of medium max. 60 °C


Bearing bracket Stahl / GG25
Input shaft Stainless steel 1.4057
Connection elements Stainless steel 1.4301 (V2A)
Agitator shaft Stainless steel 1.4301 (V2A) or 1.4571 (V4A).
High-strength steel with polyolefin protective jacket
Propeller Stainless steel 1.4301 (V2A), polymer or as required


  • Most applications can be delivered in ATEX-certified versions for use in potentially explosive atmospheres
  • Special coupling with safety device for torsionally elastic but guided connection of the gear unit shaft and the agitator shaft (not for all models)
  • Temperature monitoring in the motor winding
  • Optional filling level monitoring of the seal system


Vertical and inclined agitators from streisal can be used for all kinds of agitating and mixing tasks thanks to their modular design, and are able to be used in various industries: Gentle mixing and circulating, suspension of solids as well as flow generation in industry, water supply or biogas generation.

Digestion tower agitator in industrial waste water treatment
Digestion tower agitator in industrial waste water treatment

Difficult operating conditions

For use in potentially explosive atmospheres, vertical and inclined agitators from streisal are also available in ATEX, IECEx and UL/CSA-certified versions.

The maximum medium temperature is 60 °C.


Energy-efficient production is increasingly becoming a decisive success factor in industry. With the product range of agitators that are installed vertically or at an inclined angle, streisal offers an extensive range of standard components with high levels of efficiency. On this basis, we assemble solutions to meet the requirements of the particular agitating task and for achieving maximum efficiency on your behalf.

Installation is possible with variants with or without counter-bearings, as well as various support for wall or ceiling mountings.


The drives are activated preferably by frequency inverters with safety software set in the parameters (torque limitation, coupling break detection) which can be optionally equipped with the "streisal SafeGuard" automatic torque monitoring and control system and the "streisal SafeBox" vibration monitor.


streisal vertical and inclined agitators are characterised by great robustness and long service life. Many of the components used have proved reliable in practical application for more than 30 years.