7
2.
General information
2.1.
Construction of the SPEC HD cultivator
The cultivators produced are available in working widths: 2.5m, 3.0m, 4.0m and 4.8m.
Fig.1 SPEC HD 4.0 H cultivator.
The main frame of the cultivator is the basic load-bearing element of the entire
machine. In the version that exceeds a width of 3 m, the cultivator consists of a mid frame
and side frames folded hydraulically into the transport position (Fig.1). The plough beams
with working components are attached to the frame. Standard cultivators are equipped
with a shaft and a disc beam mounted to the shaft arms. Each disc has its own bearing
(maintenance-free hubs), allowing the disc to be optimally inclined to the direction of
travel and the ground. The task of the discs is to level the soil surface distorted by the
last row of working components. The shafts are used to compact opened soil and maintain
the working depth of the cultivator.
Table 2 Types of the SPEC HD cultivator
Main frame
Right frame
Mid frame
Side shafts
Spring protection of
the working element
Left frame
Drawbar
Plough beam
Working discs
Arm set
Roller adjustment hydraulics
