Straw management

From the rotors, the straw moves directly to the chopper, which can be varied in intensity depending on the conditions. One hundred and eight closely arranged dual bladed knives, a cross blade and a bank of stationary blades are the recipe for finely chopped straw. The LEXION also has a swivelling grating element for the best straw chopping and spreading. The finely chopped material is subsequently fed to the power spreader.

The power spreader ensures perfect, top-quality straw spreading with two counter-directional discharge spreaders. The entire mixture of chopped material and chaff is removed from circulation, accelerated once more and evenly distributed across the entire working width. Performance map controlled motion of the inner and outer deflectors ensures optimal spreading quality.

All this enables the LEXION to achieve efficient straw spreading with a minimal use of power, even under such unfavourable conditions as heavy straw volumes, high side wind or steep slopes. The spreading width can be adjusted overall and for each side individually in CEBIS.

From the sieve pans, the short straw and chaff are routed to the chaff spreader or the chaff fan.  The chaff spreader is hydraulically driven and spreads the sieve pan discharge evenly behind the cab.  The speed and spreading width can be adjusted individually with a flow control valve.

The chaff blower goes a step further.  It takes the material and feeds it directly to the power spreader. This system has a distinct advantage: the chaff/short straw mixture, which can be as much as 25% of the total throughput, is fed to the active spreading system and distributed over the entire working width.  For the maize harvest, the speed of the chaff and power spreader is reduced.