30
P
kg Tractor's kerb weight
The data is found in the tractor's
operating instructions or its
registration card
P1
kg Tractor's front axle load
P2 kg Rear axle load of empty tractor
M2 kg Arm total weight
350 kg
M3
kg Spreader total fertiliser
The data is found in the operating
instructions of the spreader
M4
kg Big bag weight
1000 kg max
M1
kg Total weight of the front tractor ballast
Check the tractor's technical data
and of the front weight, or measure
and
m
Distance between the centre of gravity of
the front ballast and the centre of the front
axle
b
m
Tractor wheel base
Check the tractor's operating
instructions or its registration card,
or measure
c
m
Distance between the hitch lower pins and
the rear axle centre
Check the tractor's operating
instructions or its registration card
d
m
Distance between the hitch lower pins and
the arm centre of gravity
d
is 0.46 for the arm
e
m
Distance between the hitch lower pins and
the spreader centre of gravity
e
is 0.79 for N061 spreaders
f
m
Distance between the hitch lower pins and
the big bag centre of gravity
f
is 2.6 for the arm
M1 mini – Calculation of the minimum essential ballast for the tractor front.
Pc – Calculation of the total unit weight (sbig bag)
P1c – Calculation of the front axle load
P2c – Calculation of the rear axle load
