JF FCT King Size 1260, Directions For Use Manual

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1. INTRODUCTION
PIGB-206X-02 FCT1460 0614
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PERFORMANCE
The precision chop forage harvester FCT 1460 has a very versatile use which, with
the right equipment, makes it possible to chop grass and whole crops. At the same
time FCT 1460 is capable of working alone or parallel with other machines.
FCT 1460 has a high capacity compared with other corresponding products as it
uses the “DIRECT CUT” system. “DIRECT CUT” gives a minimum loss of power
when cutting the material and thus ensures maximum utilisation of the accessible
tractor power.
Capacity, however, is difficult to define and compare as, for a forage harvester, it will
depend not just on which crop is being cut but also how the crop has been treated
before it is picked up or cut by the machine and finally which cutting length
adjustment the machine is working with.
If we take a forage harvester which, in fresh, not pre-dried grass, can work 100 tons
per hour, it is possible to calculate the capacity at different per cents of dry matter
depending on the pre-treatment before cutting, as shown in the following table.
Dry matter Capacity
Dry matter 100% 18 ton/h
Wet new grass 15% 120 ton/h
Not pre-dried grass 18% 100 ton/h
Pre-dried grass
– no outflow of sap from clamp
silo
25% 72 ton/h
Pre-dried grass
– no outflow of sap from high
tower silo
33% 55 ton/h
Very pre-dried grass 50% 36 ton/h
Straw, very dry 90% 20 ton/h
It will probably surprise most people that the capacity can vary between 20 and 120
ton/h, as a result of varying water content.
In practice you want to drive the forage harvester in the highest possible tractor gear
without causing frequent blockage. However, the amount of grass in the field will
always vary, for instance where the mower conditioner has had to turn, change
forward speed or change direction of travel. Therefore it is often appropriate either to
drive with a power reserve so that the machine will not block, or to continuously
adapt the driving of the forage harvester to the conditions.