Maintenance – supply system
683
Dull cutting blades and too great a distance between the cutting blade and the counterblade will
result in an unnecessarily high power demand, poor chop quality and high wear on the cutting
elements.
Therefore the worn cutting blades must be ground with the grinding device of the forage
harvester and then the counterblade must be re-adjusted.
The frequency and the duration of the grinding process depend on the application conditions.
In principle, short grinding intervals with a short grinding duration and corresponding
counterblade adjustment are recommended.
– To ensure that the cutting blades for the maize operation achieve a very good self-
sharpening effect, they must not be "fully ground", i.e. the blade should not be ground down
to the cutting edge. This will cause the base material to wear more quickly than the coating
and an aggressive cutting edge will be formed, the so-called "mouse tooth".
– On account of the application conditions, the self-sharpening effect of the cutting blades for
grass operation is difficult to achieve, as is the case with the cutting blades for maize
operation. The blades must therefore be "fully ground", i.e. the blade should be ground
down to the cutting edge.
Before grinding the cutting blades, check the automatic re-adjustment of the grinding stone and
clean the grinding channel.
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