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HR 104-1004 & HRB 102-103 power harrows

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

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.

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Equipment

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

CRUMBLER roller for KUHN power harrow

Use in dry and slightly sticky soil without integrated seed drill

These rollers are used for soil preparation in spring and summer. They require low traction power and are economical. The CRUMBLER roller (diameter 390 mm) has removable tubes.
MAXICRUMBLER roller for KUHN power harrows

A light roller

The MAXICRUMBLER is ideal for spring and summer soil preparation. It requires low traction power and is economical. This 520 mm-diameter roller limits soil buildup and is highly resistant in stony soils.
PACKER 2 roller for clay soils tending to become hard

For clay soils tending to become hard

This roller with 515 mm diameter is suitable for a wide range of soil conditions and especially recommended for clay soils that tend to smear and harden while drying. They contribute to an optimum seedbed by uniformly firming the soil while leaving loose soil on top. They are adapted for use with light-weight integrated seed drills.
MAXIPACKER_Roller.png

A flexible roller

Its large 535 mm diameter reduces rolling resistance. Coated scrapers increase service life, reduce maintenance and improve roller cleaning in sticky soils.
STEELLINER furrow-opening roller for KUHN power harrow

Furrow-opening roller for the precise tamping of each seeding line

Power harrows in the HR 1040 R range are also compatible with the STEELLINER roller. With its overall diameter of 500 mm, this roller offers very good rolling and carrying capacities. It is adapted to difficult and wet conditions and provides excellent crumbling capacity on dry and hard soils.
PACKLINER furrow-opening roller for KUHN power harrow

Furrow-opening roller for the precise tamping of each seeding line

The PACKLINER roller (592 mm diameter) offers a large prismatic profile that improves self-cleaning and creates a regular furrow shape. It covers the seeds even in difficult conditions. It excels in light soil while being adapted to the most clayey soils.
Track eradicator available as optional equipment on KUHN power harrows

To loosen soil compacted by tractor wheels

Available as optional equipment on all folding HRs and rigid HR 104 and 1004 series, they are adjustable in height and are equipped with traction bolt or spring safety. When working with twin wheels, the machine can be equipped with two track eradicators per side on the same holder.
Hydraulic linkage on KUHN power harrows

The robustness you require!

2,500 kg is the lifting capacity of the standard hydraulic linkage available on all power harrows except folding models. A high capacity linkage with a lifting capacity of 3,300 kg is available to attach large-capacity seed drills on the HR 104 and 1004 power harrow ranges. Equipped with reinforced and bushed cylinders and pivot pins, it also has a hydraulic lift limiter.
Front levelling share for KUHN power harrows

Foldable power harrows: a perfect seedbed

The front levelling share crumbles the soil between the two troughs on the folding models. This share is particularly useful for crops requiring a flawless seedbed and also for soil preparations in min-till cropping systems.
Levelling bar for KUHN power harrow

Made-to-measure seedbed

The front levelling bar is used to break up large clods on uneven terrain. Easily removable and adjustable in height, it does not limit the working depth. To obtain a fine seedbed, the levelling bar can be positioned at the rear between the rotors and the roller. You can even mount two leveling bars: one at the rear, the other at the front.
    HR 4504 power harrow at work

    Specifications

    Technical characteristics
     
    Working width approx. (m)
    Overall width (m)
    Transport width (m)
    Maximum tractor power (kW/hp)
    Maximum tractor power (kW/hp) at 540 min-1
    Maximum tractor power (kW/hp) at 1000 min-1
    Minimum power requirement (kW/hp)
    Minimum power requirement (kW/hp) at 1000 min-1
    Required tractor hydraulic equipment
    Gearbox
    Rear PTO (same rotation as tractor)
    PTO safety
    PTO speed (min-1)
    Rotor speed 540 min-1
    Rotor speed 1000 min-1
    Type of blades
    Number of rotors
    Hitch
    Working position
    Transport locking position
    Approx. weight. (kg) with Crumbler roller with removable tubes Ø 390 mm
    Approx. weight (kg) with Crumbler roller with removable tubes Ø 390 mm / Maxicrumbler roller Ø 520 mm
    Approx. weight (kg) with Maxicrumbler roller Ø 520 mm
    Approx. weight (kg) with Packer PK2 roller Ø 515 mm
    Approx. weight (kg) with Packer PK2 roller Ø 515 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 500 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 4004 DR HR 4004 D HR 3504 D HR 3004 D HRB 303 D HRB 302 D HRB 252 D
    4.00 4.00 3.44 3.00 3.00 3.00 2.50
    4.08 4.10 3.50 3.08 3.08 3.08 2.60
    2.67 harrow solo (2.51 with rollers raised)
    184 / 250
    73 / 100 73 / 100
    184 / 250 184 / 250 184 / 250 118 / 160 103 / 140 103 / 140
    81 / 110 51 / 70 44 / 60 37 / 50
    73 / 100 66 / 90 59 / 80
    1 DA
    Central DUPLEX with gear selection by interchangeable gears and 2 side gearboxes 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
    Cam type cut-out clutch Cam type cut-out clutch Cam type cut-out clutch Cam type cut-out clutch
    750 / 1000 (factory set) 1000 1000 1000 540 / 750 / 1000 (factory set) 540 or 1000 540 or 1000
    221 / 289 (factory set / after gear reversal) 221 / 289 (factory set / after gear reversal)
    230 / 313 (see table of rotational speeds page) 230 / 313 (see table of rotational speeds page) 230 / 313 (see table of rotational speeds page) 270 (factory set) / 360 410 / - (factory set / after gear reversal) 410 / - (factory set / after gear reversal)
    FAST-FIT FAST-FIT with boron steel blades FAST-FIT with boron steel blades FAST-FIT with boron steel blades FAST-FIT with boron steel blades Bolted Bolted
    13 14 12 10 10
    Cat. 2, 3N & 3 Cat. 2 and 3 with pivoting lower links Cat. 2 and 3 with pivoting lower links Cat. 2 and 3N (pivoting lower links cat.2 as standard - cat.3N to order from KUHN Parts) Cat. 2 and 3N (pivoting lower links cat.2 as standard - cat.3N to order from KUHN Parts) Cat. 2 and 3N with yokes Cat. 2 and 3N with yokes
    Rigid or floating
    Mechanical
    - - 1185 1075
    965 / 975 835 / 850
    2115 1580 1400 1195 1085
    1170 1000
    2340
    1850 1635 1390 1280
    2390 1900 1685 1420 1310 1200 1035
    1435 1325 -
    2095 1840 1550 -
    2480

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    Media

    HR 4504 power harrow at work
    HR 5004 DR power harrow at work
    HRB 303 power harrow at work
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