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Magnetic stirring drive "airspin" with pneumatic motor and flanged connection
The airspin distinguishes itself by the optimum dynamic of a permanent magnetic coupling flanged to a pneumatic motor in an appropriate design. The vane motor has a very high power density and, thus, is significantly lighter and smaller than a similarly powerful electric motor.
Thereby, the stirring system operates with little vibration and reduces the height. Another great plus is the application in the EX zone. The complete stirring system is supplied with ATEX.

The magnetic stirring drive "airspin", displays a whole range of practical benefits
  • The design with flange DN 15, DN 25 or DN40 enables the application under vacuum and pressure up to 10 bar.
  • Due to the larger contact surface, the flanged connection effects a better distribution of forces, whereby, greater torques and volumes of vessel can be utilized.
  • Torques of the magnetic couplings, according to the size of the vessel and viscosity, 40 Ncm, 60 Ncm, 90 Ncm and up to 120 Ncm.
  • The magnetic stirrer seal is available in stainless steel WNo. 1.4435 (316L), WNo. 1.4571 (316Ti), Hastelloy® C22 and other materials.
  • Operating temperature, up to max. 240°C.
  • Speed control is carried out variably by a fine adjustment valve and can be read out on an analog tachometer.
  • Simple and quick replacement of the bearing makes the servicing and cleaning easier. Steel ball bearings are used for the stainless steel version, with a max. speed of 1750 rpm. Friction bearing PTFE/carbon are used for the HC design, with a max. speed of 1150 rpm.
  • Stirring tools made from the materials mentioned and glass can be installed.
  • Max. total length 417 mm.


Example of application "airspin"
A magnetic stirring drive, airspin is shown, 90 Ncm, with flange DN 25, on a 3 litre, double-jacket reaction vessel, with a cover NW 150. Depending on the reaction vessel, this series can be used for operation under pressures up to 10 bar and temperatures up to 250°C. The complete stirring unit is designed for use in EX zones (ATEX).