Type BG-1031 Electric mixers for elevated tanks

The type 1031 biogas mixers are fitted with an electric drive and V-belt gear reduction that protects the drive motor and is fitted with a belt tensioning system.


  • Proven biogas technology
  • Module shafts mounted on ball bearing
  • Low-wear mechanical seal

Additional advantages

  • Additional PTO shaft
  • V-belt drive with minimal wear
  • Made in Germany

Business areas

  • Biogas sector
  • Industrial use

Suitable for

  • Gravity tank

The V-belt not only offers maximum protection for the drive motor; it also protects against breakage of the drive shaft should the mixing propeller become obstructed by a foreign object. 6-pole motors with a speed of 1000 rpm and an output of 7.5–22.0 kW are used as the drive motor in this design. Depending on the size, the high-torque electric motors make it possible to reach mixing propeller speeds between 300 and 400 rpm. Thanks to the high torque, propeller diameters of 500-600 mm are possible. The efficiency is significantly greater than with the standard electric motor 1450 rpm. Supplied as standard with a pusher propeller without a switch or interval control. The mixer can be retrofitted with an angled drive making it suitable for virtually any application. The mixer is supplied as standard with a pusher propeller but excluding switch and interval timer control. The mixer can be retrofitted with an angled drive making it suitable for virtually any application. The three-part drive shaft is of a modular design. The upper and lower sections of the drive shaft are fitted with 2 taper roller bearings each, while the centre shaft section has a deep groove ball bearing. The maximum bearing spacing is 1500 mm. The mixer is oil filled is of a very low maintenance design and can be used for continuous operation, 24/7, up to 1000 rpm. The drive shaft is sealed by means of a SiC/SiC mechanical seal. The front drive shaft is sealed using a cartridge seal The special seal is moisture proof. Air humidity and rain ingress are therefore no longer an issue. The front drive shaft is equipped with a PTO spline in accordance with 1 3/8” Z6 DIN 9611 which enables combined electric/tractor drive operation. If a tractor is used, the V-belts must be removed. If the unit is installed at floor angle, an oil expansion tank must be installed and the oil refilled.

Application: Fermenter

  • The mixer can also be installed and removed with a full tank
  • The biogas digester can continue operating with no downtime
  • The installation and removal of our mixing system can be completed from the outside without it, being necessary for a fitter to get inside the tank.
  • The medium can be fed into the tank during mixing and is immediately and completely mixed through
  • Trouble-free stirring and mixing is ensured because there is no installed equipment to interrupt the flow
  • Can be used in all types of tank
  • The mixer is not located in an explosion protection area
  • Can also be retrofitted to all existing systems

Flexible and customised.

Various equipment variants, attachments and accessories are available for our agitators and systems.

Specifications are subject to change without notice.