MASTERDRIVE GIII housing: reliable and wear-resistant
Crop quality first
A boost for well-shaped windrows
A regular windrow is especially pleasant for drivers of the following harvesting machines. It is most easily collected by pick-ups of crop harvesters, self-loading trailers and balers. Smooth driving means greater comfort! The speed of the front rotors can be increased by 20% compared to the rear rotors. All this without having to move from the tractor cab. The boost function ensures that the crop is moved more towards the centre of the machine. It is less twisted, as it does not roll on the ground. This allows the rear rotors to form a uniform and airy swath. It is an ideal solution for perfect crop drying.
Windrow formation: a plus thanks to the double-curved arms
The homogeneity and volume of the windrows are prerequisites for rapid drying and easy pickup by the balers. The tine arms of the GA rakes are positioned hyper tangentially. This means that they reach a 90° angle very late. Combined with the tines' steep slope cam, tine clearance is quick, later and requires little turning effort. The windrows thus formed are more regular, voluminous and straight. Windrowing is better even at high speeds because the crop is not pushed beyond the windrow.
Strengths of the angled arms:
- They reduce the distance between the tine passes. Forage loss is kept to a minimum even at high ground speeds.
- The weight is in the center of the tine arm. This increases its service life, because it is not subjected to any pressure during its rotation. The guide rollers are thus less exposed to stress.
Preserve the plant cover
To protect the soil and the plant cover, optimal adaptation of the rotors to the changing terrain is just as important as low ground pressure that limits compaction.
KUHN's four rotor rakes are fully equipped to meet these requirements:
Suspended from the junction of a pivot point and independent of the main frame, the rotors can swivel in all directions thanks to the 3D rotor pendulum joint. They precisely and efficiently follow the variations in the terrain. The result: a flawless performance, the assurance of a clean crop and a healthy plant cover.
The wide tyres help to reduce soil compaction and ensure the stability of the rotors, even on slopes. Stability on slopes is also the strength of the optional radial tyres.
Each rotor is equipped with four pivoting wheels. This ensures that the plant cover is preserved, even in tight turns. Thanks to their position close to the tines, the rotors adapt immediately and efficiently to changes in the terrain.
The front rotors are now suspended by hydraulic cylinders, which means a more precise adjustment of the suspension. In addition, the ground pressure is automatically corrected depending on the working width. The user can therefore easily adapt the machine to the working conditions. A hydraulic reduction of the rear rotors is also available as optional equipment. It ensures a load transfer to the machine frame, thereby increasing stability when working on steep slopes. A hydraulic cylinder placed in front of the rotor head controls its lowering. Like an aeroplane, the rear is lowered first, then the front. The tines do not come into contact with the soil thanks to this STABILIFT jet effect.
Quick to get started
Even more peace of mind with Section Control
A new, more user-friendly terminal interface
All settings are in the cab thanks to ISOBUS
- Rotor lift,
- Working and windrow width,
- Individual working width adjustment,
- Rake height,
- Machine folding, etc.
A pre-programmed sequence, integrated into the ISOBUS software, facilitates and optimises turning manoeuvres at the headland. It can be easily adapted to your needs. Thanks to the angle sensors, the rotors are always raised to the preset height, regardless of the working width. Once all the pre-sets have been made, all you have to do is press a button. Sit back and let the electronics do the work!
Adapt the windrow to the volume of crop and the width of the pick-up
These large widths require excellent adaptability of the machine to the requirements of the crop harvesters or balers downstream of the harvesting chain. This flexibility allows you to adjust working and windrow widths continuously and hydraulically from the cab:
The position of the front rotors can be adjusted in terms of working width via hydraulic cylinders and angle sensors.
The windrow width can be changed at any time by repositioning the rear rotors. The windrow width is between 1.40 and 2.40 m (and up to 2.50 m with GA 15231).
Despite the large working widths, the four-rotor rakes are flexible enough to work in triangular-shaped fields. The ability to lift each rotor individually allows raking in the tips or avoiding obstacles. In addition, the large clearance under the rotors makes it easier to pass over windrows.
To adjust the raking height, the rotors can be adjusted simultaneously in pairs at the front or rear or individually. The height of the rotors is displayed both on the terminal screen and on the rotor frame.
|Working width (m)|
|Average windrow width (m)|
|Transport width (m)|
|Transport length (m)|
|Transport height (m)|
|Number of rotors / Rotor diameter (m)|
|Number of tine arms per rotor / Number of tines per tine arm|
|Number of wheels per rotor|
|Raking height adjustment|
|Front rotor suspension|
|Front rotor individual working width adjustment|
|Spare wheel for rotors|
|Drive to rotors|
|Theoretical tractor power requirement (kW/hp)|
|Required tractor hydraulic connections|
|Required tractor electrical connections|
|Road lights and signalling|
|Approx. weight (kg)|
|Basic machine delivered assembled (except optional equipment)|
|GA 13231||GA 15231|
|8.40 - 12.50||9.50 - 14.70|
|1.40 - 2.40||1.40 - 2.50|
|1 central windrow||1 central windrow|
|4 / 3.20||4 / 3.65|
|11 front - 12 rear / 4||13 front - 15 rear / 4|
|Fully enclosed double reduction MASTER DRIVE GIII||Fully enclosed double reduction MASTER DRIVE GIII|
|3D axle||3D axle|
|4 - Pivoting||4 - Pivoting|
|Hydraulic via the control box||Hydraulic via the control box|
|Constant hydraulic suspension, automatically adjusted according to the working width||Constant hydraulic suspension, automatically adjusted according to the working width|
|As standard||As standard|
|2 as standard||2 as standard|
|ISOBUS machine: use of a CCI terminal or a tractor ISOBUS terminal||ISOBUS machine: use of a CCI terminal or a tractor ISOBUS terminal|
|Integrated hydraulic system mounted in the headstock||Integrated hydraulic system mounted in the headstock|
|Always in line with the tractor||Always in line with the tractor|
|2-point - Cat. 2 and 3 pivoting links||2-point - Cat. 2 and 3 pivoting links|
|70 / 95||85 / 115|
|LS connection: 1 x Pressure, 1 x Free return, 1 x load sensing||LS connection: 1 x Pressure, 1 x Return free, 1 x load sensing|
|1 x 7-pin socket (signalling)||1 x 7-pin socket (signalling)|
|As standard||As standard|