HR 104-1004 / HRB 102-103 plain white background

A perfectly prepared seedbed

This power harrow ranges offer a working width from 2.50 m to 6 m. Rigid or foldable, they can be used in solo or combined with a seed drill. Discover the key to get an optimal seedbed in all conditions.

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Optimal seedbed preparation is imperative to achieve consistent germination and root development. Many factors require you to work in different conditions. The wide selection of tines and equipment as well as the large range of rotor speeds, are all arguments that will ensure your satisfaction with your KUHN power harrow. Take a look at our power harrow to admire the robustness and high level of manufacturing quality.
HR 104-1004 / HRB 102-103 at work

Your benefits

Seedbed of superior quality

Diagram of the gradual mixing profile of the power harrow tine holders

Tine holder positioning

The tine holders of the KUHN power harrows are positioned in a specific way to create a gradual soil mixing. This precise and exclusive design prevents the harrow from being affected by negative vibrations while reducing power consumption.

Controlling the depth

The height adjustment of the roller is easily done by means of limiting pins. Free to move downward, the roller retains all its grip, even if the machine was to lift slightly during work. The rounded shape of the pin and the stop ensures a large contact area.
Roller height adjustment

Perfect finish

The specific design of the side deflectors guide and channel the soil to ensure good finish between passes. Fixed on the HRB roller arms, the deflectors follow the working height of the roller. On the HR 1004 series, they are mounted on reinforced arms. The efficiency and quality of work are maintained even in stony conditions.
Side deflector of the HR 4504 power harrow

Pease of mind with the simple, robust and long-lasting design

Cross-section of the KUHN power harrow rotor

A rotor sometimes copied never matched

The powerful rotor drive is fully protected by a rigid gearbox and trough. The casing, bearings and tine holders form a compact and very sturdy assembly, limiting the torsion stress on the casing. The rotor has a high-rigidity, maintenance-free trough. The curved profile of the forged steel sprockets ensure that the gears are in line with the upper bearings. The maintenance free bearings create a permanent hold, eliminating any risk of play. The sealing is reinforced by a cassette seal on the HR and a lip seal on the HRB. The conical centering of the blade holder (KUHN patent) eliminates any risk of play in the splines. The blade holder is oval-shaped, avoiding blockages of stones and encouraging their evacuation.

Reliable driveline and gearbox

The rotors are driven by large diameter gears. Therefore, the power transmission to the tines is through a large number of intermeshing teeth to transfer the torque loading.

Most KUHN power harrows are equipped with duplex gearboxes. Thanks to their interchangeable sprockets, you can choose the speed most suited to your needs. The entire driveline is protected by a cam type cut-out clutch.
Duplex gearbox that adapts to the most difficult conditions

A robust central frame, linkage and headstock

On models with 4 and 5 m working width, the central frame is made with large section profiles ensuring good rigidity and high bending and torsion resistance. For even more simplicity and comfort, some models have hydraulic locking in transport position.
The central frame of the HR 6004 DRC power harrow is composed of a double front and rear frame made of large section rectangular profiles.
The high-capacity 3-point linkage, made from heat treated steel to reduce wear, pivot to allow the machine to follow the ground contours. The headstock is designed and made from steel plate formed and welded ensuring a high resistance.
Central frame of the HR 6004 DRC power harrow

A power-harrow suited to your conditions

FAST-FIT, OPTIMIX, DURAKUHN, 36 cm extra long.

A large choice for increased versatility of the HR 104-1004 range

The FAST-FIT tines are fitted as standard on the KUHN HR 104 & 1004 power harrow range. They have a bevelled and twisted shape that creates a fine tilth on the surface, perfect for germination even in difficult conditions (stony, hard and clay soils). They are also adapted to high groundspeeds.
The OPTIMIX tines feature an exclusive design which ensure a quality seedbed in stubble cultivations, subsoiled ground or following pasture regeneration. The aggressive design of the OPTIMIX tines ensure greater soil movement and a greater soil to residue mix.
To increase the service life, KUHN offers hard coated DURAKUHN tines.
For deeper cultivations, 36 cm extra long tines are also available for specialist crops.

A wide range of rotor speeds available

A wide range of gear sets can ordered as an option to match your requirements. Also, the gears inside the duplex gearbox can be reversed to offer a wide range of speeds in order to adapt the crumbling intensity. The PTO input set towards the rear of the machine reduces the u-joint angle and makes it easier to lift the power harrow during headland turns.
The Duplex gearbox offers a wide range of rotor speeds

Easily and quickly adjust the settings

KUHN folding power harrows can be used in rigid or floating position thanks to their articulated central frame. In just a few minutes, you can adapt the tool to the conditions and terrain by simply pivoting an oblong-holed plate.
All HRB 103 DR series and HR 1004 DR series models are equipped with standard height-adjustable side deflectors for improved adaptation to different working conditions. Articulated, they are fitted with spring safety incase of contact with an obstacle.
Power harrow rigid or floating position with the articulated central frame.

Equipment

A wide choice of rollers for all conditions. Better equipped with track eradicators, hydraulic coupling, front levelling share and rear levelling bar.

HR 4504 power harrow at work

Specifications

Technical Characteristics
 
Working width approx. (m)
Overall width (m)
Maximum tractor power (kW/hp) at 1000 min-1
Minimum power requirement (kW/hp) at 1000 min-1
Gearbox
Rear PTO output
Rear PTO (same rotation as tractor)
PTO safety
PTO speed (min-1)
Rotor speed 1000 min-1
Type of blades
Number of rotors
Side deflectors
Hitch
Approx. weight. (kg) with Crumbler roller with removable tubes Ø 390 mm
Approx. weight (kg) with Maxicrumbler roller Ø 520 mm
Approx. weight (kg) with Packer PK2 / Packer PK2 HD roller Ø 515 mm
Approx. weight (kg) with Maxipacker roller Ø 535 mm
Approx. weight (kg) with Steelliner roller 12.5 cm row spacing Ø 550 mm
Approx. weight (kg) with Steelliner roller 15 cm row spacing Ø 550 mm
HR 304 D HR 404 D HR 3004 D HR 3504 D HR 4004 D HR 4504 D
3.00 4.00 3.00 3.50 4.00 4.50
3.12 4.11 3.08 3.50 4.10 4.55
139 / 190 139 / 190 184 / 250 184 / 250 184 / 250 184 / 250
59 / 80 73 / 100 59 / 80 66 / 90 73 / 100 81 / 110
DUPLEX with gear selection by interchangeable gears DUPLEX with gear selection by interchangeable gears DUPLEX with gear selection by interchangeable gears DUPLEX with gear selection by interchangeable gears DUPLEX with gear selection by interchangeable gears DUPLEX with gear selection by interchangeable gears
As standard As standard
As standard As standard As standard As standard As standard As standard
Cam type cut-out clutch Cam type cut-out clutch Cam type cut-out clutch Cam type cut-out clutch Cam type cut-out clutch Cam type cut-out clutch
540 / 750 / 1000 (factory set) 540 / 750 / 1000 (factory set) 1000 1000 1000 1000
270 (factory set) / 360 270 (factory set) / 360 230 / 313 (see table of rotational speeds page) 230 / 313 (see table of rotational speeds page) 230 / 313 (see table of rotational speeds page) 230 / 313 (see table of rotational speeds page)
FAST-FIT with boron steel blades FAST-FIT with boron steel blades FAST-FIT with boron steel blades FAST-FIT with boron steel blades FAST-FIT with boron steel blades FAST-FIT with boron steel blades
10 14 10 12 14 16
As standard - With spring safety As standard - With spring safety
Cat. 2 and 3 with pivoting lower links Cat. 2 and 3 with pivoting lower links Cat. 2 and 3 with pivoting lower links Cat. 2 and 3 with pivoting lower links Cat. 2 and 3 with pivoting lower links Cat. 2 and 3 with pivoting lower links
1090 - 1185 - - -
1100 1470 1195 1400 1580 1730
1295 1740 1390 1635 1850 2020
1325 1790 1420 1685 1900 2075
1550 1840 2095
1450 1950

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