The multitalent in harvester technology
Kesla's extensive experience in forest technology has given it superior expertise as a developer of harvesters. Kesla's harvester family offers the market's most comprehensive line of both roller and stroke harvester heads. The product family also includes excavator harvester packages as well as special harvesters.
When developing the harvester head range, special attention has been paid on requirements of biomass harvesting. With optional accessories the Kesla harvester heads can be equipped for effective biomass logging in addition to conventional timber harvesting, without compromises.
Kesla is a pioneer in the outfitting of excavators for harvester use. Kesla has an in-depth knowledge of almost all the excavator brands and their special requirements. When it comes to stroke harvesters, is Kesla is also the world's market and technology leader. An extensive selection of cranes designed specifically for harvesting use supplements the range of harvester products. As a testimony to Kesla's quality, several harvester manufacturers around the world have chosen KESLA as their original equipment.
The design and manufacturing of Kesla's forest machines complies with all applicable international quality criteria. All products pass through a rigorous quality assurance program as well as practical performance and safety tests; the principles of sustainable development guide every aspect of Kesla's operations.
14RH
KESLA 14RH is a brand-new head for first thinnings. Light weight and excellent efficiency of hydraulics make it a perfect powerpack for farm tractors, light thinning harvesters and max. six tons excavators.
The 14RH is an agile head with three delimbing knives. The single rear knife ensures delimbing of bottom branches and holds even larger trees firmly in grip. Thanks to the short frame design, processing of even crooked trees is easy. Optimal diameter of trees is up to 25 cm.
16RH/RHS
KESLA 16RH is the market's lightest professional harvester head equipped with four delimbing knives and multi-stem functions. It's specially designed for integrated harvesting of timber and biomass. Professional multi-stem functions and the unique proAX-cutting systems are unequalled features in this size- and weight class. The 16RH and 16RHS are real powerhouses for thinning, suited to 6-10 tons wheeled harvesters and tractors.
18RH/RHS
With the new frame, delimbing knife, shaft and bearing solutions of the KESLA 18RH II, efforts have been made for even better durability and a lesser need for service even in the most demanding operating conditions. The new, more spacious system enables the achievement of a clearly higher feed force and speed with significantly reduced fuel consumption. The feed is now supplemented with a hydraulic traction control. Along with the changes made in the structures and hydraulics, the serviceability of the grapple has reached an entirely new level.
The KESLA 18RH II is also available with a single movable rear blade. The bolt-on rear blade package can also be installed later. The rear blade improves the delimbing of the trunk and keeps the big trees in the jaws better during the feed.
The new KESLA 18RH-II is suitable for installation on basic machines weighing 7 to 13 tons, and large agricultural tractors/excavators of 7-10 tons.
19RH-III
Thanks to its modular design, the new KESLA 19RH-III harvester head
can be optimized to operate under a wide variety of conditions,with different
woods and on different basic machines. The KESLA 19RH-III is a 3-knife
felling head with a rear delimbing knife,suitable for the first or following thinnings,
as well as the harvest of short-rotation eucalyptus and acacia plantations with or
without debarking.
As 3 knives, the 19RH-III is an excellent choice for manipulator a slightly more
difficult acacia. If head weight is a factor critical, the 19RH-III is a great choice
because of its lighter weight.
It is best suited for installation on hydraulic excavators of
8 to 13 tonnes or wheeled harvesters.
Technical datta 20SH
The Kesla 20SH-II stroke harvester is particularly well suited to the effective processing of robustly branched trees, either standing or in piles. Processing of valuable special trees without damaging timber surface is also easy with this harvester head. Thanks to the prostroke partial stroke function, even the delimbing of crooked trees is efficient. The optimum diameter of trees is 25 cm. The Kesla 20SH-II suits 7-13 ton base machines.
21RH-II
The new KESLA 21RH-III harvester head can also
be optimized for a wide variety of different conditions
wood and various basic machines. The KESLA 21RH-III is a
4-knife felling head with two rear delimbing knives,
adapted to the first thinning or to the following thinning, as well
than at harvest from short eucalyptus and acacia plantations
rotation with or without debarking. It is best suited for a
installation on hydraulic excavators from 10 to 13 tonnes or
wheeled harvesters.
Technical datta
24RH-III
KESLA 24RH-III features extremely large range of use, all around from thinning up to final felling. It also can be mounted with very large range of different base machines.
The 24RH-III is a compact 3-knifed head with a single rear delimbing knife. Thanks to the short frame length, it’s a superior choice to processing and debarking crooked eucalyptus or acacia trees. As a head lighter than its 4-knifed sister 26RH-III, it fits perfectly to the carriers where the weight is a critical factor. Thanks to the modular construction, the change between the 3- and 4-knifed versions is possible even as retro-fit.
25RH-II
The KESLA 25RH-II models are versatile harvester heads for thinning and final felling where the trees’ average diameters are less than 40 cm. The head’s maximum opening is 58 cm. The heads are equipped with excellent balance and well-designed geometry of the rollers and knives. These details help and speed up the picking of trees, either standing or laying on the ground, either vertically or from bundles lying on the ground. The head is also well suited to the processing on landing.
KESLA 25RH-II models are best suited to 12-20 tonne base machines.
25SH
The KESLA 25SH-II stroke harvester is at its best when processing robustly branched trees – standing or in piles – requiring substantial delimbing force. The stroke technology ensures that the tree's surface is not damaged, facilitating the gentle handling of valuable timber. The 25SH-II suits cut-to-length harvesting of standing trees as well as the processing on landing. The optimum tree diameter is 40 cm.
The unique, combined middle feeding jaws and delimbing knives give even more force to handle heavy trees and improve delimbing quality. Thanks to the prostroke partial stroke function, even delimbing of crooked trees is efficient. The KESLA 25SH-II suits 10-15 ton base machines.
26RH-III
The four delimbing knives together with Kesla’s unique progressive feed roller geometry takes a firm grip of even the large trees, end the large feeding rollers provide excellent traction. The 2WD with unbeatable efficiency gives lots of feeding power and high feeding speed, at low fuel consumption.
The 26RH-III fits perfectly to 12-16 ton excavators and mid-size wheeled harvesters.
27RH-llI
KESLA 27RH-III is a thoroughly renewed head for final felling. The head features powerful hydraulics combined with the modular frame construction, ensuring market’s best power-to-weight ratio. Kesla’s unique feed roller geometry with progressive roller angle gives excellent traction and minimized friction when delimbing. This combined with powerful hydraulics enables even 36 kNm delimbing force at high feeding speed, all with less fuel consumption. Short frame with a single rear delimbing knife makes the head powerful also when processing crooked trees.
Sturdy construction with large axles and bearings ensure long lifetime with less costs for maintenance. Open and clear design makes daily service and maintenance easy and convenient, while still giving excellent protection for sensitive components and hoses.
KESLA 27RH-III can be equipped with several different size of feeding motors and lots of other options to match different working conditions and base machines. It is suitable to heavy rubber-wheeled harvesters and 16-22 ton excavators.
28RH-llI
KESLA 28RH-III is a thoroughly renewed for final felling. The head features powerful hydraulics combined with a modular frame construction, ensuring excellent power-to-weight ratio. Kesla’s unique feed roller geometry with progressive roller angle gives excellent traction and minimized friction when delimbing. This combined with powerful hydraulics enables even 36kNm delimbing force at high feeding speed, all with less fuel consumption.
Sturdy construction with large axles and bearings ensure long lifetime with less costs for maintenance. Open and clear design makes daily service and maintenance easy and convenient, while still giving excellent protection for sensitive components and hoses. KESLA 28RH-III can be equipped with several feeding motors of different size and lots of other options to match different working conditions and base machines. It is suitable to heaviest rubber-wheeled harvesters and 18-25 ton excavators.
29RH-llI
Like its little brother 27RH-II, KESLA 29RH-II is a 3-knife 2WD harvester head. The technology is equivalent to the 27RH-II, but instead of the ultimate power/weight ratio the construction is made to last in the most demanding working conditions.
Due to its compact design, large diameter feed rollers, excellent protection and a robust construction, the harvester head is ideal for felling crooked and branched hardwoods.
29RH-II is also available with an integrated top saw (29RH-II TS).
KESLA 29RH-II is suitable for the heaviest wheeled harvesters and 20 to 30 ton track equipped excavators.
30RH-llI
KESLA 30RH-III is a newly upgraded head for heavy-duty final felling. The head is similar to the 29RH-III but features two rear delimbing knives. The head is available both with 2WD and 3WD feed. Thanks to the Kesla’s unique modular design, the conversion between 2WD and 3WD is possible also as retrofit, which gives more safety to the investment in the rapidly changing working environment.
The 30RH-III fits to the heaviest rubber-wheeled and tracked harvesters as well as excavators in 20-30 ton size class.