HR46X is the number one choice for first thinning. Even more powerful than its predecessor, the HR46, the HR46X is now equipped with a larger 140cc pump and more powerful Acgo Power 49 AWF engine. These changes improve efficiency while reducing fuel consumption, which directly results as increased profitability for the business owner.

In order to move from tree to tree as fast as possible without increasing RPM, the power transfer is fully hydrostatic.  The gear change of variable speed engine is done digitally and even automatically, if desired. An operating mode can also be selected from the operation automation menu, which increases the diesel engine RPM to maximum, which automatically allows maximum transfer speed.

The cabs of Sampo-Rosenlew harvesters have always been placed on a separate frame from the engine, so the comfortable and quiet work environment is the same familiar operator experience operators have become accustomed to. When you add on the aforementioned changes, a decrease in RPM, and the removal of the gear shifter from the cab, in addition to numerous other changes to this model, the cab of the HR46 is astonishingly quiet.






A thinning harvester operates in young sections of forest. They are kept relatively dense in order to maximize the growth rate. High-quality thinning requires that the harvester is rather small and can be maneuvered in small space. Furthermore, the machine weight must be relatively low. The HR46x meets these requirements. Further modifications have been made resulting in a light but strong chassis. The narrow harvester has a middle joint with a 50-degree turning angle resulting in unique maneuverability. The outer turning radius is 402 cm. Tyre width can be chosen between 500 and 650 mm.



Drive transmission

The HR46x harvester is equipped with full hydrostatic drive transmission. In this system there are no vulnerable axles and there is no train of gears. Changing from one gear to the next in the multi-speed radial piston motors is done electrically. The torque in the Sampo Hydraulics drive motors is high as soon as the machine starts to move. Since the wheels are constantly rolling without scratching, no marks are left on the terrain in the forest to be thinned. The turning of the harvester is also harmless to the ground because there is no bogie axle.



The Sampo Rosenlew factory also manufactures the spacious, silent cab which helps the operator to work efficiently. From the HR46x cab it is easy to see the tree tops, which is a requirement for the correct choosing of trees to be harvested. The cab meets the official safety standards and is specially designed to be used in a dense thinning forest when the remaining trees must be left unharmed. The cab features many details that make it easier for the operator to work and feel more comfortable.



The HR46x harvester has a7.1 meter parallel crane with sufficient 55 kNm lifting capacity to ensure swift working. The crane is also very flexible to use even in a dense forest. The side tilt, which can also be switched on to work automatically, helps to pick the very trees that the operator wants to remove. Furthermore, it helps when operating on a slope or on rough terrain. The low construction of the crane improves the sideways stability and visibility towards the trees to be felled. The vertical fastening plate serves the same purpose, bringing the crane foot as close to the operator as possible.


Harvesting head


We only use harvesting heads from well-known manufacturers. The main brands are Kesla and Keto. For thinning, the harvesting head should be small and designed so that it is easy to move to the tree to be harvested in the dense forest without harming the remaining trees. The harvesting head and accessories are selected based on the intended use. For example, there are specific equipment or applications for the standard harvesting head designed for producing energy timber.



Sampo-Rosenlew uses engines manufactured by Agco Power with several decades of experience in Linnavuori, Nokia.  The power plant of the HR46x is the TIER 4 final phase common rail and SCR technology-equipped Power 49 AWF diesel engine. The low fuel consumption of the low-emission engine, coupled with extended service intervals, allow to keep operating costs at minimum. It has 124kW of power and the torque is highest exactly in the RPM range that is used the most in operation. The engines are silent and have been made to last. engine


Measuring computer

Measuring of the wood volume as well as controlling of the harvesting head is done by the measuring computer.Since there is a variety of customer needs, the Motomit computer that we use can be equipped with software of different levels. If there is need for functions requiring PC level power, the personal computer is coupled side by side with the measuring computer.This way a possible malfunction in the PC does not prevent the use of the harvester. With a Motomit computer the customer has access to all the necessary functions such as:
  • Optimizing of crosscutting.
  • Harvester head steering, control and trouble shooting.
  • Working hour follow-up.
  • Wireless transmission of production information.




Paino/Vikt/Weight Työpaino/Arbetsvikt/Weight at work 8, 000-9, 500 kg
  Pituus/Längd/Length  4900 mm
  Leveys/Bredd/Width 2100-2400 mm
  Akseliväli/Axelavstånd/Wheelbase 2735 mm
  Maavara/Ground clearance/Frigång 670 mm
  Korkeus/Höjd/Height 3200 mm
Moottori/Motor/Engine Agco Power 49 AWF, 124 kW @ 2100 rpm
  Polttoainesäiliö/Bränsletank/Fuel tank 180 l
Ajo/Transmission Tyyppi/Typ/Type Hydrostaattinen/Hydrostatisk/Hydrostatic
  Kääntösäde/Vändradius/Turning radius 4020 mm
  Kääntökulma/Styrvinkel/Steering angle 50°
  Nopeus/Hasdtighet/Speed 0-13 km/h
  Vetovoima/Dragkraft/Traction force 90 kNm
Pyörät/Hjul/Wheels Edessä ja takana/Fram och bak/Front and rear 500/70-28, 540/65-28, 650/60-26.5
Työhydrauliikka/Hydraulik/Hydraulics Pumppu/Pump Rexroth A10V0 140cc/ 294 l/min/2100 rpm
  Öljysäiliö/Oljetank/Hydraulic oil tank 130 l
  Käyttöpaine/Arbetstryck/Working pressure 230 bar
Sähkö/El/Electrics Akkukapasiteetti/Batterier/Batteries 24 V, 2 x 145 Ah
  Laturi/Generator/Charging generator 100 A
Nosturi/Kran/Crane Ulottuvuus/Räckvidd/Reach 7,1 m
  Nostomom. Brutto/Lyftmom. Brutto/Lifting torque, gross 55 kNm
  Kääntömomentti./Vridmoment/Turning torque 17 kNm
Hakkuupää/Aggregat/Head   Keto 51 Eco Supreme
    Kesla 18RH-II
Max.karsintalpm./Max kvistningsdiameter/Max. delimbing diameter n. 320 mm
Mittalaite/Dator/computer   Motomit/Technion
Jarrut/Bromsar/Brakes Tyyppi/Typ/Type Monilevyjarrut
    Multi-disk brakes
Hytti/Hytt/Cabin   Quiet safety cab
  Standardit/standarder/Standards (FOPS, ROPS, OPS)
  Ikkunat/Fönstrar/Windows 12 mm polycarbonate



HR46 Harvester Dimensions    
Length mm   4900
Height mm    3200
Width mm   2100 - 2400
Length with crane mm   8760
E Axle to axle mm   2735
Ground clearance mm   670
G Turning radius mm   4020
H Turning angle (degrees)    50°



Why Sampo Rosenlew?



When forest is managed, the goal is usually to maximize the production of wood, in terms of quantity and quality. This is also the aim of all the harvesting activities which fall into two categories:

  1. Harvesting for growth which includes thinning.
  2. Final harvesting where the aim is to create a new generation of trees to replace the old ones.

The purpose of thinning is to concentrate the production capacity of the forest soil - and wood growth - on certain individual trees.The goal is to produce big trees with good technical quality. The entire space should grow a dense, even and healthy forest.

The machines should be technically suitable, keeping in mind the aim in each harvesting operation. Consequently, in thinning when a densely growing forest must be left undamaged, the machines should be relatively small, maneuverable and suitable to operate in sections of forest without harming the remaining trees.The area used for strip roads where the machinery moves has to be minimized since as much space as possible should be left for the trees to grow.

The above mentioned facts result in the conclusion that the Sampo Rosenlew machinery is a superior alternative to be used in thinning operations.


Sampo Rosenlew HR46x



In thinning, like in every phase of wood production, the costs should be minimized. However, this must not weaken the effect of these operations i.e. their efficiency and quality.

The cost of mechanized harvesting can be roughly divided in three groups.

  1. The capital cost that depends on the purchase price of the equipment.
  2. Personnel costs consisting of wages with their side costs.
  3. Other running costs such as fuel and lubricants for the machines as well as service, transport, insurances and other miscellaneous costs.

The capital cost can be affected by choosing the most inexpensive alternative of the functioning machines available. Little can be done about the personnel costs with technical solutions. Other running costs can be reduced by choosing the most economical alternative of what is available.

Since the Sampo Rosenlew thinning harvesters have proved to be reliable, extremely price competitive and fuel efficient, they are the best solution to thinning.














Forest Machine Brochures

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HR46x harvester

HR46X is the number one choice for first thinning. Even more powerful than its predecessor, the HR46, the HR46X is now equipped with a larger 140cc pump and more powerful Acgo Power 49 AWF engine. These changes improve efficiency while reducing fuel consumption, which directly results as increased profitability for the business owner.


HR46x HArvester / EN (pdf)
HR46x HArvester / DE (pdf)
ХАРВЕСТЕР HR46x / RU (pdf)
HR46x SKÖRDARE / SE (pdf)
ABATTEUSE HR46x / FR (pdf)
HARVESTOR HR46x / CZ (pdf)



Fr28 Forwarder

Sampo-Rosenlew has responded to customer demands by designing the FR28 forwarder, which is suited for thinning operations. This 10-tonne load bearing forwarder is designed to complement our harvesters.

Fr28 Forwarder / EN (pdf)
Fr28 Forwarder / DE (pdf)
FR28 SKOTARE / SE (pdf)
PORTEUR FR28 / FR (pdf)
FR28 VyVážecí tRaktoR / CZ (pdf)
Fr28 Kuormatraktori / FI (pdf)