7
Start-up
7.1
Calculating the ballasting of the tractor-machine combination
46
Vendro 680
Original operating instructions 150001223_01_en
Calculation of the minimum ballasting at rear G
H min
for implements mounted at
the front
b
T
b
T
f
e
G
G
L
H
V
H
•
•
+
•
−
+
•
=
)
(
min
d
c
b
+
+
x
For "x" observe the technical data of the tractor manufacturer. If "x" is not indicated, insert
the value 0.45.
Enter the calculated minimum ballasting, which is required at the rear of the tractor, in the
table.
Calculation of the actual front axle load T
V tat
G
b
T
f
e
G
T
H
V
V
V
•
−
•
+
+
•
=
)
(
tat
b
)
d
c
+
(
b
+
Enter the actual front axle load and the permitted front axle load, indicated in the operating
instructions for the tractor, in the table.
Calculation of the actual total weight G
tat
G
T
G
G
H
L
V
tat
+
+
=
If the required minimum ballasting at rear (G
H min
) is not reached with the implement mounted
at the rear (G
H
), the weight of the implement mounted at the rear must be increased to the
weight of the minimum ballasting at rear.
Enter the calculated, actual total weight and the permitted total weight, indicated in the
operating instructions for the tractor, in the table.
Calculation of the actual rear axle load T
H tat
H
T
tat
V
G
T
tat
tat
−
=
Enter the calculated, actual rear axle load and the permitted rear axle load, indicated in the
operating instructions for the tractor, in the table.
Tyre load capacity
Enter double the value (two tyres) of the permitted tyre load capacity (see e.g. documents of
the tyre manufacturers) in the table.
Table
The minimum ballasting must be attached to the tractor as a mounted implement or ballast
weight. The calculated values must be less than/equal to (≤) the permitted values.