Titlebar_sm.gif (41227 bytes)
Main Page

Features

Index Page
Sask Sawmilling
Sask Forestry Expo
Guest Column
Contractor Profile
Sask/Man Leading Loggers
Sask Added Value
Forest Fire fighting
Spotlight

----------------
Departments

TechUpdate
Supplier Newsline
Calendar of Events
Reader Service
Classified Ads
-----------------
Site Information

Contact List
Past Issues Archive
Join our Listserve

Search Our Site
---------------------

 

 

 

June 2004

Tech-Update

HARVESTING AND FELLING HEADS

Tech Update Editor: Diane Mettler

AFM-Forest Ltd
The AFM 60 L is an effective larger head for wheeled-base machines. It is a reliable choice for tough work with a maximum grapple opening of 650 mm, felling diameter of 700 mm and cutting diameter of 600 mm. The AFM 60 L provides good capacity and power for bigger final clear cuttings. Because of compact design, it is light enough to be well movable inside later thinning. The head is equipped with one pair of delimbing knives and non-sliding three-roller feeding, which provides a high quality output and ease of handling with even the worst quality trees. As a carrier, 12-17 ton forest machines are recommended. www.afm-forest.ru  Reader Service Card #5051

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 for use with various carriers, the QC1400 has a cutting capacity of from 6 to 16 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 diameter saw, rotatable square teeth, a universal quick attach mount and a cutting capacity of up to 14. www.bardaequipment.com  Reader Service Card #5052

Denharco
The new DHT650 Series II harvester/processor head from Denharco is suited to all operating conditions, hardwood or softwood, tree length or cut-to-length. Designed and built in North America, the DHT650 Series II 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 butting saws with automatic lubrication and chain tensioning system. The new Dasa 4 measuring and control system offers unparalleled accuracy, a user-friendly environment and dollar value optimization in tree length, long logs or short wood production. The DHT650 Series II offers fast positioning in felling or processing mode, synchronized delimbing arms and feed rollers with proportional pressure, a 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 new self-cleaning 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, and better protection for the butting saw. www.denharco.com  Reader Service Card #5053

Fabtek
Fabtek Corp (A Blount Company) builds both fixed and dangle-style heads. The fixed style FT18R four-roller design suits loggers harvesting in a range of operational styles from select cut hardwood to multiple stem first thinning of pine plantations. This head has a 24" cutting capacity. Features include 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 a 20" cutting capacity, while the FT240 has a 26" 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 #5054

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 HSG 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 #5055

Gilbert
Gilbert Products Inc introduces the worlds largest felling head: the 3028 series (patent pending), with a 28 cutting capacity, a 66 diameter saw blade Hi-Cut design and a large accumulation area of 6.3 sq ft. It has new internal and external hydraulic system, new H shape frame design and new heavy-duty arms cylinders. The Hi-Cut saw blade owns interchangeable hardened holders and two possible teeth sizes. Gilbert includes the robust 2022 with 23 cutting capacity and an accumulation capacity of 5 sq ft. The 2018 offers accumulation capacity of 4.53 sq ft and 21.5cutting capacity. Its design features an integrated 220 degree side tilt system with a new heavy-duty top pin assembly. Both heads are equipped with Gilbert high performance saw blades. www.gilbert-tech.com  Reader Service Card #5056

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 ft 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 #5057

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 #5058

Kesla Oy/Foresteri/Patu
Kesla builds the Foresteri and Patu product lines and manufactures seven different models of harvester heads, including five roller heads and two stroke heads. The roller heads include the 30RH, the 30RHS, the 25RH, the 22RH, and the 20RH Foresteri models. With cut diameters ranging from 250 mm to 500 mm, the heads offer delimbing speeds of four to five mps and maximum sawing diameter ranging from 450 mm to 750 mm. The machines weigh between 570 kg to 1,400 kg. The two stroke heads include the 1,060-lb Patu 410SH and the 1,760-lb 560SH, with sawing diameters of 18 and 23.5 respectively and strong double jaws for a firm but gentle grip on the stem. Both can be used as processors, processing wood from a pile, and the heads are controlled by push buttons on the crane control levers. www.kesla.com  Reader Service Card #5059

Keto/Hakmet
Keto is one of the oldest harvester makes with well over 2,000 heads made. The
Keto family consists of seven different groups: K51, K100, K150, K500, K525, K800 and K1000. The traditional models have two moving knives while the LD4 and HD4 models have four knives/arms. TS models have a top saw. The 800TS Supreme features tapered frame pins for easy servicing, larger 4.75 gallon oil tanks as well as improved saw case and top saw mounting. The 800TS has a larger tilt frame pin (2.36), improved chain saw bar motion control, as well as larger knife and track cylinder pins. Like the other models, it has a long, firm and very powerful yet gentle grip around logs. It can handle some of the larger wood, with a 34 maximum opening, 39.5 saw bar, 22 top saw, and a top feeding speed of 16.4 feet per second. www.hakmet.com  Reader Service Card #5060

Log Max/Pro-Max
Pro-Max, the distributor of the Log Max harvester/processors, presents its Log Mate IT computer system with six wires and the latest slice-by-slice technology. At Forest Expo they introduced the new 12000 HD, designed for big wood applications. The 12000 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 and hefty pulling force for the ultimate coastal and hardwood processor. Pro-Max offers six 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 increases delimbing and pulling power as required, while four independent cast steel delimbing knives, with extra wide cutting surfaces, handle thick limbs. The 9000 is a 3,980-lb head with a cutting diameter of 28.5 and a feed force of 9,350 lbs, while the 7000 weighs 3,710 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.pro-maxbc.ca  Reader Service Card #5061

Loewen Forestry Equipment
Loewen Forestry Equipments high-speed saw head has common, accessible parts and can be adapted to most psi and gpm requirements. With a 350-degree high rotation wrist assembly for increased productivity and 23 cut capacity, the head offers a unique two-arm collecting capacity, reduced carrier movement and fewer moving parts. Its easy to install with no extra hydraulics. Other features include a two-gearbox rotate mount, a Rexroth saw motor, a heavy-duty ball bearing rotate gear, and Gilbert saw disc. It offers easy access to the hoses, motors and well-guarded cylinders, and a hinged skid base, with six, one-inch bolts, allows easy access to the saw blade. Continuous rotation is also available. www.loewenforestry.com  Reader Service Card #5062

Pierce Pacific Manufacturing Inc
The PTH 20, Pierce Pacifics 20 tree harvester, comes standard with a high-speed 0.404 topping saw and the Pierce MK2 full-scale measuring system. The 3/4 pitch butt saw and 9,800 lbs 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 0.404 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 #5063

Quadco
Quadco's harvester/processor head line-up includes the following three series: First, the controlled fall Ultimate Series, available in 22" cut (5600) and 24" cut (5660). The Ultimate fits 22t class excavators or feller bunchers. The accumulator arms, and solid mount are designed for CTL/TL harvesting as well as for roadside processing. The new 5660 swing saw, the same as that used on the 6000 harvester and the 2400 intermittent felling head, puts out 147 hp at the saw, a 63% increase over the 5600 saw. Second, the Heavyduty Series, available in 24" cut (6000) and 30" cut (7500). The 6000 and 7500 feature modular construction with three boom mounts (dangle, controlled-dangle or solid) and two butt saws (disc or bar & chain) to choose from. 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 and standard bottom delimbing arms. The 7500 has two-speed motors for high torque in heavy delimbing and high speed in lighter conditions. Third, the L240 Processor, a new 24" dangle head designed from the ground up as a processor by the Levesque Brothers, the inventors of the original Target Processor. The attachment which weighs in at around 7,000 lbs offers an impressive 9,750 lbs of feed force. It is simpler to service than anything on the market today. It features an adjustable butt saw for greater CTL productivity. It is ideally fitted to 25t+ carriers. Top saw is always standard on all Quadco models. Allen-Bradley 500 computer with independent hydraulically controlled length-measuring wheel and in-cylinder diameter reading achieve accurate log measuring in all models. www.quadco.com  Reader Service Card #5064

Risley Equipment
Risley Equipment offers four High Speed and two V-Saw series saw heads. The High Speed models use a unique belt drive system providing a 2 :1 drive ratio resulting in fast saw blade recovery and a clean powerful cut. The V-Saw series is comprised of the V1923B and V2229B High Speed Intermittent saws, based on the RotoSaw intermittent design with the addition of new intelligent hydraulics for a fast, clean cut. The V-Saw is the most environmentally friendly and fuel efficient saw available today. V-Saws are available with 24" and 30" cut capacity. Saws have a choice of side rotation of 15 degrees or 45 degrees per side. The Rolly II single grip harvester is a fixed style control head, ideal for sensitive harvesting applications. The Rolly II is available with a bar saw or RotoSaw butt saw with a 24" cut capacity. Measuring is a DASA system combined with a Risley trail wheel. 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 steel drive feed rolls or rubber chain back rolls for fast, accurate processing, the Cobra and Sidewinder processors have controlled mounting bracket assemblies with 290 degrees of rotation and full float capability for accurate long log processing. www.gorisley.com  Reader Service Card #5065

Rotobec
The Rotobec RSG-250B single-grip harvesting head has a felling and delimbing capacity of 25. Component locations have been chosen to facilitate maintenance and minimize hose movement. Components, including hoses and wires, are tidy and well-protected, the company says. The RSG-250B is the only harvesting head in its class to offer a continuous rotatorthe R-6500that considerably reduces potential damage to hose and wires and related downtime, the company says. Installation of the RSG-250B requires only three hydraulic lines and a four-wire electrical cable on the boom. All valves are located directly on the harvesting head. Chain saw oil is used to lubricate the blade and chain. A small oil reservoir is located on the head. The RSG-250B comes with the Motomit computer and offers length, diameter and volume measuring. It can be installed on nearly any track or wheel carrier with a minimum of 130 hp. www.rotobec.com  Reader Service Card #5066

Tigercat
The new 5702 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 5702 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. The 5702 and the 5400 are available with three wrist options (30, 110 and 140). All wrists use annular ball bearings and heavy-duty construction. With a 21.5 cut capacity, the 5400 is designed and constructed for long life with large diameter pins and bushings and cushioned cylinders. 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 #5067

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 0.404 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 HTH622B, for 20 to 25 ton carrier classes is the latest addition to Waratah's line of 600 Series of harvester/processors. The 622B offers an number of improvements over the earlier HTH622. Weighing in at 4673 lbs, the 622B is 600 lb lighter than the previous model. This weight reduction was accomplished by elimination of the bottom delimb section and a topping saw that is integrated into a shorter 622B frame. The main sawbox configuration has been modified to allow for a lower stump height, up to a 35.5" bar and a Hultdins S100 saw unit that is not only faster but has no external hose routing. In addition, grab arms open 3-1/2" wider to allow the head to easily process up to 24" stems. Other modifications include cleaner hose routing throughout and synchrodrive three-wheel feed system that increases traction and speed. 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. With a 24 cut capacity, the FS24 has an accumulating capacity of 4.8 sq ft. www.waratah.net  Reader Service Card #5068

Caterpillar
The purpose-built Caterpillar-designed felling heads are well matched to their respective machines, resulting in maximum saw speed recovery and productivity, the company says. By matching the hydraulic system to the cutting attachment, the saw heads are designed for optimum saw recovery and tree control. Caterpillar offers three models of high-speed disc saws for tracked feller bunchers. The HF181, the HF201 and the HF221 are available with either 40-degree or 220-degree wrist rotation. Heads for wheeled feller bunchers are available in single and dual-post configurations and include the HF221 and the HF222 as well as the HS20 shear head for pulpwood felling. www.cat.com  Reader Service Card #5069

Ponsse
Ponsse harvesting heads offer durability, reliability, easy servicing and accurate measurements. Six different models in three classes cover everything from thinning to final felling. The H60 is mid-sized head and can be fitted with two to four hydraulically-operated delimbing knives and one stationary knife, while the H60e and H60BW have three to five hydraulically operated delimbing knives and one stationary. HW60 comes equipped with four hydraulically-operated knives. The H60 heads features the Ponsse Opti information system, have force feed of 26 kN and range from 850 to 1,000 kg. The H73 is designed for large-dimensioned trees with one to two stationary and four hydraulically-movable knives. The 1,150 kg head has a maximum opening of 700 mm and a saw bar length of 750 to 825 mm. The H53 is a multi-purpose head for smaller trees, with a 640 mm saw bar. www.ponsse.com Reader Service Card #5070

Komatsu ForestValmet Heads
Komatsu Forest has manufactured nearly 4,000 heads, and offers a full line of engineered harvesting heads, including the new, stronger 360.1 and 370.1 models, the heavy-duty 380, 385 models (powered by the Maxi control system), and the massive 395 harvesting/processing head. Valmet heads handle large diameter stems and tough-limbed mixed stands. These heads deliver superior clamping and delimbing capabilities, fast working speeds, chain options, and component-coordinated design. The control system maximizes productivity and reduces operating costs. It provides accurate measuring and allows operators to adjust harvesting preferences and perform trouble-shooting functions from the comfort of the cab. Timbco - Valmet also offers a proven, lightweight, compact design bar-saw felling head, with fast cycling and big tree directional felling. This head is capable of making up to 33 diameter cuts. www.partekforest.com  Reader Service Card #5071

Madill
Madill incorporates a number of unique features into its new 25 cutting diameter
hot saw. This head is specifically matched to Madill feller bunchers, but can also be purchased separately. The fully enclosed, 365-degree wrist employs two hydraulic motors coupled to planetary gearboxes for the extremely high torque needed with tall and heavy West Coast wood. Madills felling head has two grab arms and two accumulating arms, and internally mounted valves in order to reduce hose connections from nine to four. With boom adapter it weighs in at 8,000 lbs. Madill has also included a number of safety improvements into the head, including front discharge, a sawblade brake and rotate and wrist float ability, should the operator wish to have the bunched stems fall under their own weight. www.madillequipment.com  Reader Service Card #5072


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.

Name
Title
Organization
Type of Business
Address
City
Country
Postal Code
Work Phone
FAX
E-mail

Check any of the following for more information:

AFM-Forest Ltd  #5051
Davco Manufacturing/Barda  #5052
Denharco  #5053
Fabtek   #5054
Hahn Machinery  #5055
Gilbert   #5056
GN Roy  #5057
Hultdins   #5058
Kesla Oy/Foresteri/Patu  #5059
Keto/Hakmet   #5060
Log Max/Pro-Max  #5061
Loewen Forestry Equipment  #5062
Pierce Pacific Manufacturing Inc   #5063
Quadco   #5064
Risley Equipment   #5065
Rotobec  #5066
Tigercat  #5067
Waratah   #5068
Caterpillar  #5069
Ponsse   #5070
Komatsu ForestValmet Heads #5071
Madill  #5072
 

 Back to the Top

 

   This service is temporarily unavailable

 


This page and all contents 1996-2007 Logging and Sawmilling Journal (L&S J) and TimberWest Journal.
For personal or non-commercial use only.
This site produced and maintained by: Lognet.net Inc
Any questions or comments on this site can be directed to Rob Stanhope, Principal (L&S J).
Site Address: http://www.forestnet.com.

This page last modified on Tuesday, September 28, 2004