ST 400
20
Fig. 1
K
D
C
L
A
G
F
E
B
I
H
Working
Transport
Rotor speed
Weight
Number of
Tractor engine
Model
width cm
width cm
rpm
kg
blades
HP
ST400S-130M
130
152
480
30
40-75
ST400S-155M
155
177
560
36
40-75
ST400S-165M
165
187
251
600
39
45-75
ST400S-180M
180
202
640
42
45-75
ST400S-205M
205
227
720
48
50-75
DESCRIPTION
Fig. 1 indicates assemblies refered to in the
text of this manual which are named bellow:
A:
PTO drive shaft
B:
Gerabox
C:
Side drive
D:
Rotor
E:
Frame
F:
Top mast
ST-400 is a Stone burier designed to prepare perfect seed
beds, both for flat field crops (grass, turf, vegetables ) or for
vegetable planting in beds (tomato, strawberries, vegetables
in general.)
The reverse rotating rotor, lifts the soil in the front of the
machine and the rear sieve is separating stones and clods
from the fine soil. The result is a structured seed bed with
two separate layers that are ensuring:
• Perfect operation of the seed drill or planter
• Better crop implantation: The first growing phase is crucial
• Trouble free operation of the following operations: mower,
harvester.
• For turf plantations: even surface for sport practice (golf,
football etc)
The new ST-400 receive the benefit of a flexible rubber top
with variable geometry (pat. Pending). This feature helps
the machine to avoid the most common disadvantages that
usually appear on this kind of machines:
1. Work in wet soils: The rubber top is avoiding soil sticking
and longer free operation than metal shield machines
2. Noise level: The machine works in a substantial lower
noise level than a conventional machine even in fields
with high stone content
3. Frame deformation: No permanent deformations of the
top are expected due to stone impacts. The rubber
absorbs the energy of the impacts from the stones and
this is not transmitted to the frame.
After long service, just changing the rubber hull as a
wearing part, and the machine is maintained as if it was
new.
4. Loads on transmission: The machine is protected by a
friction clutch, but even though, if a severe blockage
happens with a stone, the rubber top is reducing the loads
on the transmission elements, protecting them.
WARNING! THE MACHINE CAN ONLY WORK IN SOILS
WITH STONES NOT BIGGER THAN 12 CM.
OTHERWISE THE MACHINE CAN HAVE A SEVERE
OBSTRUCTION.
J
D
C
A
G
F
E
B
I
H
G:
Rubber hull
H:
Sieve
I:
Depth control
J:
Bed former
K:
Roller
L:
Levelling board
