Safety
14
Centre of gravity
Observe the total weight, axle loads, tyre load-bearing capacity
and minimum balast
The machine's front or rear attachment must not exceed the tractor's
permissible total weight, its permissible axle load or its tyre load-bear-
ing capacity. In order for steering capability to be maintained, the front
axle must bear at least 20 % of the tractor's empty weight.
The following can be easily calculated:
•
Total weight
•
Axle loads
•
Tyre load-bearing capacity
•
Minimum ballast
For this calculation, the following data is required:
Data from the tractor's operating manual:
Data from this operating manual:
Data which you can determine by measuring:
•
(A) Empty weight
•
(B) Front axle load
•
(C) Rear axle load
Also consider the weight of water in the tyres, accessories and
other additional weights.
•
(D) Total weight of the machine when rear-mounted; the
supporting load with the machine hitched
•
(E) Total weight of the machine when front-mounted
•
(F) Distance between the machine's centre of gravity when
front-mounted and the front-axle midpoint
•
(G) Distance between the lower link ball midpoint and the
machine's centre of gravity when rear-mounted. With machines
attached, G=0.
•
(H) The tractor's wheel base
•
(I) Distance between the rear axle midpoint and the lower link
ball midpoint
Front axle
load
Empty
weight
Total weight when
front-mounted
Total weight when
rear-mounted
Distance:
Front attachment
centre of gravity to
front axle midpoint
Distance:
Lower link ball mid-
point to rear attach-
ment centre of gravity
Wheel base
Rear axle
load
Distance:
Rear axle midpoint to
lower link ball midpoint
(B)
(A)
(C)
(E)
(D)
(F)
(G)
(I)
(H)
