More traction, less slippage and better soil protection are the advantages of classic dual tyres. In the past, large tractors with dual tyres quickly reached the legal limits for the outside width of the machine, with a 3-metre stub axle, for example. The additional set of dual tyres, including reinforced special rims with severely limited usage times, also led to high costs and time-consuming installation. With VarioFlex, Fendt is offering an innovative system with a dual wheel hub for dual tyres combined with a stub axle of 2.50 metres with unrestricted type approval. Fendt VarioFlex combines safe, reliable tractive power transfer and good soil protection. VarioFlex is fully integrated in the vehicle as a whole and uses existing tractor components.
With Fendt VarioFlex a second flange can be fitted on both sides of the 2.5-metre stub axle. The system of stub axle and dual wheel hubs reduces the outside width of the tractor to less than 2.55 metres meaning it can gain type approval in markets without any difficulties. Thanks to the duo wheel hub, the full torque is transmitted centrally via the axles. This avoids damage caused by the previous power transmission via the inner rims, which meant special rims were required. The operational reliability of the combination are improved and the dual tyres protect the soil, during mechanical weeding, for example. Fendt VarioFlex enables the use of existing tyres with standard rims with a tyre width of up to 750 millimetres. It is also possible to easily exchange the dual wheel and main wheel at any time. Customers can swap tyres easily to maintain even wear and avoid additional costs for the dual tyres caused by special rims or wheels. The combination of stub axle and dual wheel hubs makes assembling the dual tyres much easier.
Because different crops and cultivation methods require different track widths, with the help of existing spacers the track can be flexibly set. The spacers make it possible to adjust row crops with different track widths for maize, vegetables, asparagus or with narrow tyres. Row usage with a track width of 60 inches is also possible.
Fendt VarioFlex is also fully compatible with the tyre pressure regulation system VarioGrip and wheel weights in the inner rims. This maximises the contact area of the tyres, tractive power increases and less pressure is put on the soil. When driving on roads the tyre pressure can be increased at the touch of a button. This reduces fuel consumption and tyre wear. With VarioFlex this option is already available for dual tyres and increases the overall productivity of the machine. It is controlled via the tractor terminal. Fendt VarioGrip can be ordered directly from the factory for both flanged and stub axles, with dual tyres for row crops and with wheel weights.
Fendt VarioFlex technology is available for the Fendt 600 Vario, 700 Vario Gen7, 900 Vario and 1000 Vario series and can be ordered now.