SKY Agriculture MAXIDRILL 20 Series, Original Instructions Manual, Page: 37 / 151

D
C
alCulation oF the load on the Front axle
Checking the tractor’s required characteristics
The requirements for the tractor concern:
• The total authorised weight.
• The permitted weight per axle.
• The authorised support weight on the tractor’s linkage.
• The permissible load capacity for the tyres fitted to the tractor.
All of this information can be found on the data plate or on the registration papers and in the tractor manual.
The weight on the tractor’s front axle should be at least 20% of the unladen weight of the tractor.
The tractor must supply the deceleration power (braking) required by the manufacturer when the machine is coupled up to it.
The gross weight of the tractor indicated on the vehicle’s registration papers must be greater than the sum of:
- the unladen weight of the tractor
- the ballast
- the total weight of the towed machine
u
w
kg Unladen weight of tractor
Cf the tractor’s registration documents
or its instruction manual
F
al
kg Front axle load when the tractor is empty
r
al
kg Weight on the rear axle when the tractor is empty
F
rb
kg Front ballast (if present) Cf ballast characteristics
l
t
kg Load transfer of the towed machine Cf technical specifications
a
m
Distance between the centre of gravity
of the front implement or ballast
and the centre of the front axle (total of a1 + a2)
Cf characteristics
of the different elements or measure
a
1
m
Distance between the centre of the front axle
and the centre point of the front lower linkage arms
a
2 m
Distance between the centre point
of the front lower linkage arms and the centre of gravity
of the front implement or ballast
b
m Wheelbase of tractor
Cf the tractor’s registration documents
or its instruction manual
C
m
Distance between the centre of the rear axle
and the centre point of the front lower linkage arms
37
FR
2
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