Sept Oct, 2003

 

 

 

 

PRODUCT  UPDATE:

HARVESTING & FELLING HEADS

You will find a wide variety of harvesting and felling heads available in the market. We have assembled a comprehensive list to help make your informed decision a little easier. For the purposes of this article, we have defined harvester, felling and processing heads as follows: Processing heads are those heads that process only on the ground. Felling heads solely cut and drop the trees. Harvesting heads both fell and process. The summary of the products listed are available as a pdf download.

Please fill in our Reader Request Form located at the bottom for more information on these products.  

Davco Manufacturing/Barda
The new QC1400 hot saw feller buncher model from Davco Manufacturing Ltd, a division of Barda Equipment, features an all new patent-pending, multi-tree cutting layout that decreases cycle times compared to single tree cutting systems. Designed by Davco Manufacturing for use with various carriers, the QC1400 has a cutting capacity of from 6 to 14 and has a 42 diameter saw disc. Overall attachment dimensions are 48 wide by 78 tall. It requires a hydraulic flow of 30 to 38 gpm and 3,300 psi. The high-speed disc saw has a 1 5/8 kerf. Other features include rotatable square teeth and a universal quick attach mount. Davco Manufacturing also offers the 1,100-lb QC 1200 (quick cut) feller buncher, with a 36-inch diameter saw, rotatable square teeth, a universal quick attach mount and a cutting capacity of up to 14. www.bardaequipment.com  Reader Service Card #160

Denharco
The new DHT650 harvester/processor head from Denharco is suited to all operating conditions in either hard or softwood, tree length or cut-to-length. Designed and built in North America, the DHT650 offers power and performance without sacrificing productivity or precision, the company says. It features heavy-duty structure and rotator, the choice of rubber or steel feed rollers with 8,900 lbs of traction and high-speed trimming and bucking saws with automatic lubrication and chain tensioning system. The Denharco-designed Optilog II measuring system offers quick and accurate tree length, long logs or short wood production. The DHT650 offers fast positioning in felling or processing mode, synchronized delimbing arms and feed rollers with proportional pressure, a new grab arm and feed roll concept, a fixed frontal knife, interchangeable and heavy-duty saws, a topping saw adapted to crosscutting forked limbs and automatic chain tensioning. The measuring wheel configuration is adapted to tree species and offers constant pressure and better contact with the stem. Other features include faster, simpler saw blade changes with Jet Fit, better protection for the butting saw with new bolt-on guarding and better access to components. www.denharco.com  Reader Service Card #161

Fabtek
Fabtek Corp builds both fixed and dangle-style heads. The fixed style 18 four-roller R2000 design suits loggers harvesting in a range of operational styles from select cut hardwood to multiple stem first thinning of pine plantations. The machines feature multiple encoder measurement sensors, a standard auto chain tensioning system and simplified piston oiler, as well as an optional high-speed saw system that allows the fixed heads to reduce cutting cycle times down to equivalent dangle head speeds. The dangle-style FT180 has an 18 cutting capacity, while the FT240 has a 24 cutting capacity. Both heads perform well in both hard and softwood applications. The 3/4 pitch high-speed bar and chain design on the units, as well as on the fixed head, have helped bring reduced maintenance and high reliability into the tough harvesting conditions seen in many logging areas, the company says. www.fabtek.com  Reader Service Card #162

Gilbert
Gilbert Products Incs high-rotation felling heads include the 2022 with a 23 1/4 cutting capacity and a large accumulation capacity of five cubic feet. The 2018 offers a 21.5 cutting capacity and an accumulating capacity of 4.53 cubic feet. Its design features an integrated 220-degree side tilt system that is part of the saw head frame for increased sturdiness and lighter weight. Both heads are equipped with Gilbert high performance saw blades in welded or bolted segment versions. The new Hi-Cut saw blade has interchangeable hardened holders, two teeth sizes and a safety assembly. www.gilbert-tech.com  Reader Service Card #163

GN Roy
Two circular saw head models are available from GN Roy, the 2456-B and the 2252-C. The 2456-B has a greater cut depth of 24 through a 40 opening, a greater holding capacity of 5.06 square feet and 280 degree tilt (with planetary gear). The planetary gear is built with a holding bearing that is completely separate from the planetary and supports the heads weight. With an operating pressure of 2,800 lbs, the 6,400-lb head has a saw blade 56 in diameter. The 2252-C offers great access to the saw motor, easy access to arms, accumulator cylinders and the hydraulic system, a 22 cut depth and a holding capacity of 4.28 square feet. The clamp design makes classification of wood easier, the company says. Seals are made of polymyte and are resistant to heat, cold and high pressure. Reader Service Card #164

 

Hahn Machinery
The Hahn HSG140 and HSG160 undergo continuous product improvement, including a new encoderless length measuring system with sealed sensors, a new diameter measuring system, stronger frames, new controls and other improvements that make the heads more productive and reliable. The HGS series of single-grip harvester heads are readily adaptable to most small excavators or rubber-tired machines in the 18,000- to 25,000-lb range, or 65- to 85-hp range. The economical, full-featured harvester heads are available in both new and rebuilt models. www.hahnmachinery.com  Reader Service Card #165.

Hultdins
Hultdins versatile, continuous rotation SuperFell 851 can fell, pile, crosscut, trim, top, load and shovel. Mounted on a shovel logger, excavator or feller buncher, the high-capacity, 3,410-lb directional felling head is capable of felling trees up to 35 in diameter in a single cut and is ideal for large diameter timber, selective cutting of valuable species, salvaging blow-down and clearing rights-of-way. The SuperFell 851 offers high-gripping force grapple arms, a hydraulic snubber for side-to-side control, cushioned cylinders and the patented Hultdins SuperCut 300 saw unit with 11H 3/4 pitch saw chain. Automatic chain tensioning is standard. Designed for maximum hose protection, the unique upper boom link system simplifies mounting. With a rotator rated at 101,165 lbf, the SuperFell 851 is able to withstand loads in any direction and requires a 53- to 58-gpm (200 to 220 l/min) oil flow. www.hultdins.com  Reader Service Card #166

Kesla Oy/Foresteri/Patu
Kesla builds the Foresteri and Patu product lines and manufactures 10 different models of harvester heads, including eight roller heads and two stroke heads. The roller heads include the 30RH, the 30RHS, the 25RH, the 22RH, the 20RH Foresteri models and the Patu 355RH, 405RH and 505RH. With cut diameters ranging from 16 to 25, the heads offer delimbing speeds of 3.8 to 4.8 mps and maximum knife openings ranging from 17 to 28. The machines weigh between 880 and 3,400 lbs. The five Foresteri models offer one fixed and four mobile knives, while the Patu 355RH has one fixed and three mobile knives. The two stroke heads include the 1,060-lb Patu 410SH and the 1,760-lb 560SH, with sawing diameters of 18 and 26 respectively and strong double jaws for a firm but gentle grip on the stem. Both machines feature one fixed and two mobile knives. The heads are controlled by push buttons on the crane control levers. Other features include an automatic saw limiter, automatic or manual feed and standard length and diameter measuring devices. www.kesla.com  Reader Service Card #167

Keto/Hakmet
Keto offers 12 models of harvester heads, including the 525TS Supreme, the 800TS Supreme, the 800PHD Supreme and the 1000TS Supreme. The heads have many recent updates including a central track shaft, easy-lock track frame and main frame pins, better valve access, large oil tanks and updated tracks. Keto harvesting heads also feature improved saw case and top saw mounting, larger knife and track cylinder pins, better service access to valves and hoses, as well as guarding updates. The new track system features non-weldedlinks, larger centre axle/bushings for pivoting, and steel or plastic wear pads. Ketos dual track length measuring system is standard. The heads offer a track feed with a firm but gentle grip for low fibre damage, while the tracks come with a 4,000-hour warranty. The standard Hakmet computer system makes and updates log forecasts before and during feeding, increasing the value of the wood produced. The Hakmet IT computer system is optional. www.hakmet.com  Reader Service Card #168

Lako Oy/Premio
The seven models in the Premio line are suitable for first commercial thinning to large scale forest operations and can be attached to almost any carrier including excavator, purpose- built or modified forest machine. The 850 Premio has been designed for harvesting and processing large decked stems and requires a minimum carrier size of 25 tons. Designed for clear felling and tree length operations, the 950 Premio is the largest of the line and requires a 30-ton excavator. The smaller machines, the 450 Premio, 550 Premio, 650 Premio and 750 Premio require carriers in the 10- to 30-ton range. The machines have cutting capacities from 21" to 38". From the 650 Premio up, the heads can be equipped with a high-cutting capacity top saw, for superior processing and delimbing of crooked stems. Modifiable Premio heads can be constructed as fourwheel- driven when the rear knives are replaced with an additional pair of feed rollers. Four-wheel drive provides more efficiency in feeding, delimbing heavily branched stems or debarking eucalyptus. The measuring and control systems and software use the latest technology to increase the heads productivity. All hydraulic flow from the carrier to the head can be set and adjusted by computer. Other features include accurate measurement, modular construction, four-wire Motomit, Epec or Mevio PC systems, low impact ECO-wheels and versatile scaling features. www.lako.fi Reader Service Card # 169

Log Max
Pro-Max, a service provider for Log Max harvester/processors, presents its Log Mate IT computer system with four wires and the latest slice-by-slice technology. Soon to be introduced is the new 1200 HD, designed for big wood applications. The 1200 HD is built to outperform the largest harvester/processors on the market, the company says, with all the benefits of Log Max, including low flow requirement, stronger frame design, proven rubber wheels, lighter weight and hefty pulling force for the ultimate coastal and hardwood processor. Pro-Max offers four models of Log Max harvesting heads with patented positioning, controlled by the upper knife sensor, to minimize friction losses and maximize pulling force. The feed wheel motors variable displacement increase delimbing and pulling power as required, while four moveable cast steel delimbing knives, with extra wide cutting surfaces, handle thick limbs. The 9000 is a 3,995-lb head with a cutting diameter of 27 and a feed force of 8,787 lbs, while the 7000 weighs 3,595 lbs and has a cutting capacity of 25. The 1,881-lb 5000 has a cutting diameter of 22, while the smallest head in the series, the 1,155-lb 3000, has a cutting diameter of 20. www.logmax.com   Reader Service Card #170

Partek Forest/Valmet
Partek Forest offers nine proven harvesting and processing heads, including the three latest heavy-duty models. The new 380, 385 and 395 heads are manufactured in North America and are proportioned to handle large diameter trees and heavy, tough-limbed stands, the company says. The new heads can be matched to any carrier type and feature an easy-to-use computer measuring and machine control system. Operators adjust the controls to suit their operating preferences and perform trouble-shooting functions from the cab. Valmet heads offer features that minimize operating costs and allow loggers to maximize the value from each stem, the company says. Some of those features include superior clamping and delimbing capabilities, fast working speed, component-coordinated design and advanced machine controls. The Valmet lineup includes the Scandinavian-built 945, 960, 965, 360 and 370 heads that are capable of performing all types of harvesting from early thinning to final felling. www.partekforest.com  Reader Service Card #171

Pierce Pacific Manufacturing Inc
The PTH 20, Pierce Pacifics 20 tree harvester, comes standard with a high-speed .404 topping saw and the Pierce MK2 full-scale measuring system. The 3/4 pitch butt saw and 9,800lbs of pulling force produce quality, accurate logs with ease, the company says. The PTH 24 is the largest tree harvester from Pierce Pacific and is capable of processing 24 trees. With a maximum delimbing capacity of 30, a maximum cutting capacity of 32 with the 3/4 pitch butt saw and 20 with the .404 top sawstandard on all Pierce tree harvestersthe PTH 24 also features the Pierce MK2 measuring system that ensures high quality, accurate logs. With 360-degrees of continuous rotation, a maximum cutting capacity of 38 and a 3/4 11BC 43 saw bar, the PFG 630 directional falling grapple offers completely enclosed hoses through its centre link and a heavy duty hanging bracket with a 60,000-lb rotate bearing. www.piercepacific.com  Reader Service Card #172

Ponsse
Ponsse harvesting heads offer reliability, efficiency, easy servicing and accurate measurements. The H60 is a mid-size head that handles stems to 25.6 in diameter and can be fitted with two to four hydraulically-operated delimbing knives and one stationary knife, while the H60e has three to five hydraulically operated delimbing knives and one stationary. The H60 heads feature the Ponsse Opti 4G measuring and control system. With a maximum cutting diameter of 28 and a feed force of 26 kN, the H73 is designed for heavy, large-dimensioned trees. With one stationary and four hydraulically movable knives, the 2,310-lb head has a feed speed of zero to 13 feet per second. The front knives are specially designed and positioned for delimbing down to a small top diameter, while the rear knives delimb heavy limbs all the way from the butt end. The three-point grip provides accurate diameter measurement and the feed rollers hydraulic connection guarantees a non-slip grip, extending the service life of the feed motors. Steel claw and steel plate rollers are available. The H53 is a multi-purpose head for smaller trees up to 22 in diameter. www.ponsse.com  Reader Service Card #173

Quadco
Quadcos three harvester/processor heads include the 22 to 24 capacity 5600, the 24 capacity 6000 and the 30 capacity 7500. Top saws are standard on all models and the main saw can be a disc or bar and chain. The 7500 has two-speed motors for high torque in heavy delimbing and high speed in lighter conditions. A unique processor mount yoke provides attachment control for decking and the head can pivot seven degrees side-to-side to reduce fibre damage. The 6000 and 7500 feature modular construction with three boom mounts, three butt saws and two feed roll types to choose from. An independent hydraulically controlled length-measuring wheel and in-cylinder diameter reading achieve accurate log measuring. The self-adjusting, proportional-pressure soft clamp system, based on tree diameter, minimizes friction and maximizes feed speed, the company says. Other features include a twin-motor rotator with a 100,000-lb capacity sealed bearing, a harvester-style tilt frame with 3 1/2 cushioned cylinders and standard bottom delimbing arms. The 5600 can handle stems up to 22 with the standard slide-out disc and up to 24 with the optional swing-out disc (called the 5660), borrowed from the 6000 model. Its frame structure and delimbing arms are built to handle heavy limbs and hardwoods. The accumulator arms, solid mount and measuring wheel are designed for multi-stemming, improving operations in small diameter timber stands, as well as for roadside processing. www.quadco.com  Reader Service Card #174

Risley Equipment
Risley Equipment offers its high speed and V saw series heads. Four high-speed models use a patented belt drive and are offered with bracket tilt capacities up to 45 degrees per side. The 2:1 reduction drive multiplier system provides power and fast blade recovery, the company says. The V saw series is comprised of the V1923B and the V2229B high-speed intermittent saws, based on the Rotosaw intermittent design with the addition of new intelligent hydraulics for a fast, clean cut. The saws are available with 24 and 29 cut capacities and come with 45 degree per side tilt brackets. The Rolly II single-grip harvester is available with a bar saw or Rotosaw cutting bottom with a 24 capacity. Measuring is supplied by a DASA measuring system combined with airbag loaded trail wheel for increased accuracy. Options allow configurations to suit specific applications. The Cobra and Sidewinder processors feature a Hultdins bar saw top and bottom for fast precise cuts. Coupled with a DASA measuring system and standard spiked drive feed rolls or rubber chain back rolls for fast, accurate processing, the Cobra and Sidewinder processors are available with controlled mounting bracket assemblies with 290 degrees of rotation and full float capability for accurate long log processing. www.gorisley.com  Reader Service Card #175

Tigercat
The new 5700 felling saw from Tigercat Industries Inc is available for drive-to-tree and track feller bunchers. The single-post saw head features an asymmetrical butt plate and horn design that enables it to centre and control large diameter trees and bunch smaller stems in parallel alignment. Built for extreme duty and offering a cutting capacity of 23, the 5700 has arm pivot pins that are 2.5 in diameter with threaded ends. The Tigercat-built cylinders are cushioned at both ends for extended life. The Tigercat 5400 felling saw head for track feller bunchers is also a single-post felling saw with asymmetrical geometry and an offset pocket, resulting in better stem alignment in small diameter wood and versatility for varying timber sizes. Twin grab arms offer improved collecting, sorting and control of large trees, while the single accumulating arm provides increased bunching efficiency. Three wrist options match the 5400 saw to a variety of harvesting applications. With a 21.5 cut capacity, the 5400 is designed and constructed for long life with large diameter pins and bushings, cushioned cylinders and annular ball bearings. Tigercats 650 harvesting head for wheeled and tracked harvesters offers efficient hydraulics for optimal fuel efficiency and a cut capacity of 26. The DASA computer system provides tight measuring tolerances and excellent control. Angled rollers provide improved feed force and reduced friction on the knives and rollers. www.tigercat.com  Reader Service Card #176

Waratah
Waratahs HTH hydraulic tree harvesters handle all types of harvesting applications and are available in the 600, 400 and 200 series. The 600 series heads have either a .404 SuperCut saw unitfeaturing automatic chain tensioning with an electric pulse oiler for greater bar and chain lifeor a durable 3/4 pitch 11H chain on the larger heads. The standard topping saw allows clean processing of forked trees, broken tops and defect for highest fibre yield. A saw home detector stops feed rollers during cutting and the bar saver indicator light allows the operator to know where the saw is when the saw bar is out of sight. The heads feature the Waratahs Logrite and T10 measuring and control systems. The HTH 624 Super fells to 24 and processes large and heavy decked wood to 29. The HTH 626 Bigwood fells trees up to 26 and processes decked wood up to 34, while the HTH 616 is effective in wood up to 16 with a maximum cutting capacity of 20. 

The HTH 620 and HTH 620 Warrior process decked wood up to 23 or small clear fell to 20, while the HTH 622 Warrior was developed for rough thinning and small clear fell up to 22 and processing to 24. In the 200 series, the versatile, fixed rotation HTH 245 features two-speed feed motors for fast delimbing of smaller stems, while the HTH 260 features a 25.6 cutting capacity. With a maximum cutting capacity of 25.6, the HTH 470 has the feeding power of constant four-wheel drive and two moving and two fixed hydraulically serial-connected feed rollers. The HTH 450with a maximum cut capacity of 22is a lightweight all purpose head for thinning and regeneration harvesting. Waratahs FS series includes high accumulation, disc saw felling heads for swing-to-tree feller bunchers. With a cut capacity of 22, the FS20 increases productivity in small diameter wood and has an enlarged accumulator pocket, while the FS22 has a front discharge system that directs the main chip path away from the carrier. With a 24 cut capacity, the FS24 has an accumulating capacity of 4.8 sq ft. Both the FS22 and the FS24 are single post, centre pocket, front cut felling heads. www.waratah.net  Reader Service Card #177

 

For more information on the above products, please fill in the contact information and check off the boxes that apply.   When finished, please click on the Submit Form Button.

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Check any of the following for more information:

Davco Manufacturing/Barda   #160
  Denharco#161
   
 Fabtek #162
  Gilbert#163
  GN Roy #164
 Hahn Machinery #165
  Hultdins#166
 Kesla Oy/Foresterie/Patu #167
Keto/Hakmet    #168
Lako Oy/Premio #169
Log Max/Pro-Max #170
Partek Forest/Valmet # 171
Pierce Pacific Manufacturing Inc #172
Ponsse 173
Quadco #174
Risley Equipment #175
Tigercat #176
Waratah #177
     

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This page was last updated on Tuesday, September 28, 2004