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June 2006 - The Logging and Sawmilling Journal

 

TECH UPDATE

HARVESTING & FELLING HEADS

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 multiplestem, 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 22” cutting capacity, while the FT240 has a 26” cutting capacity. The heads perform well in both hard and softwood applications, says the company. The 3/4” pitch highspeed 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 in many logging areas.

www.fabtek.com

Hahn

Hahn Machinery Inc continues to offer the HSG140 and HSG160 single grip harvester heads. These simple and compact heads are intended to fell, delimb, and buck small timber and have been used extensively in thinning operations.

For 2006, Hahn offers a new, high performance version of its HSG series harvester heads. The all new “B” models feature digitally controlled, proportional, hydraulic valves with high
pressure/high flow capability. The new hydraulic system enables the HSG “B” series to take full advantage of most modern excavator hydraulic systems and dramatically improves felling, delimbing, and bucking performance.

www.hahnmachinery.com

Hakmet

Hakmet’s Arbro-Stroke fells, delimbs and cuts trees to length. The stroke harvester is available in two models—the 400 for thinning operations and the 1000 for larger tasks.

Arbro-Stroke can easily be connected and disconnected on the rotator of the loader. Most common farm tractors have enough hydraulic power to operate the model 400, but the model 1000 requires a heavier carrier.

The harvester head is equipped with a reliable Volvo saw motor. The cutter bar is available in either 14” or 16” for model 400 and 20” for the model 1000.

The harvester has an automatic stroke, and the tree can be delimbed with a one-button function. Arbro-Stroke is equipped with a measuring device and the stroke will stop at the pre-selected length for the log to be cut. The measuring device can be easily programmed for various pre-selected lengths.

www.hakmet.com

Hants

Hants offers the Viking 650 and 525, both said to be sturdy machines with few moving parts. They feature a strong tilt arm to make assembling on an excavator possible, a link system for feed rollers— which gives them an angle when feeding big trees—and doubled pulse counters for diameter measuring.

Hants also offers the 400 and 1000 model Arbor-Stroke harvester. These easy-to-use harvesting heads are 616 lbs and 1,210 lbs respectively. The 400 has a F11-6 Volvo saw motor, a delimbing force of 4,850 lbs and a 14.2” maximum delimbing knife opening. The 1000 is powered by a F11-10 Volvo saw motor, has a delimbing force of 7,800 lbs and a maximum delimbing knife opening of 17.7”.

John Deere

John Deere’s 762C is a veteran allaround harvester head that perfectly matches the 1270D and 1470D wheeled harvesters. Its 25.6” (650 mm) cutting capacity can handle anything from late thinnings to regeneration harvesting. Two hydraulically-controlled feed rollers grab the stem to move wood fast and true, with minimal surface impact. The smaller 745 is said to be ideal for a variety of wood sizes in both harvesting and thinning conditions. Its four fully-synchronized feed rollers are driven by high-efficiency motors which surround the stem for true four-wheel drive capability.

The John Deere H754 features an advanced hydraulic valve design and sturdy, precisely angled saw unit to ensure fast, clean cuts. It also has four hydraulically controlled movable knives and two fixed knives, one of those being manually adjustable. The John Deere H480’s longer upper delimbing knives make it easier to pick up stems, and the relocated lower knives’ pivot points and shorter bottom knives provide better delimbing quality and stem control.

www.deere.com

Kesla Oyj

Kesla manufactures eight different models of roller heads under the trademark Foresteri. The Foresteri model lineup includes the 30RH, the 30RHS, the 25RH, the 22RH, 20RH, 20RHS, 18RH and the 18RHS. All of the models offer delimbing speeds of up to five m/sec (17 ft/sec) with force ranging from 14kN (3,500 lbs) to 30kN (6,800 lbs). The maximum sawing diameter ranges from 450 mm (18”) to 750 mm (30”). The machines weigh between 430 kg and 1,400 kg. The control systems of the units use state-of-the-art components for maximum efficiency and ease of use.

Kesla manufactures two different models of stroke heads under the trademark Patu. The two stroke heads include the 1,060-lb Patu 410SH and the 1,760- lb 560SH, with sawing diameters of 18” and 25” respectively. Delimbing force is 9,000 lbs for the 410SH and 14,000 lbs for the 560SH. The stem is processed with 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

Kerik Technologies

The TreeKing PowerStroke 3.3M and 5.5M processor heads have been purpose- built to revolutionize productivity in the forest industry, the company says. They can handle a diversity of wood— from 3” to 30” in both soft and hardwoods and have 20,000 lbs of delimbing force with hydraulic requirements. Its
effective multi-stemming significantly increases productivity in small wood and because the measuring system has no mechanical parts, loggers are always in business. The absence of feed rollers reduces potentially damaging contact to the log during processing. And attention to ergonomics and simplifying the process ensures reduced operator fatigue.

www.treeking.se

Risley

The Rolly II harvester from Risley controls the tree with geared rotational control and is said to be ideal for many types of hard and softwood applications in timber up to 24”, cut to any length, which makes this harvester the logger’s choice. Options
allow configuration to suit applications.

The high speed continuous Rotosaw is built with high-strength steel and quality hydraulic components.

Designed for selective or clear felling operations, it features a 90 degree tilt and up to a 30” disk.The high speed intermittent Rotosaw ensures a quality cut every time. Benefits to the logger include high production like a hot saw, but with minimal disturbance of the surrounding vegetation, increased fuel savings, reduction of fire hazard, and less hydraulic heat generated, as the saw only rotates when cutting.

www.risleyequipment.com

Ponsse

Ponsse offers three classes of harvesting heads designed for reliability, accuracy and durability. They can handle everything from the big trunks to the small branches. The simple and unique lightweight construction in all models guarantees ease and efficiency in performance. Valves and other main components are well protected, while still allowing easy accessibility for service.

The Ponsse Opti new-generation information processing system, combined with the Ponsse harvester head, makes an efficient team for nature-conserving and productive harvesting. The company’s latest addition is the Ponsse Gentledrive, which helps the operator harvest sensitive wood products and precious wood grades, without causing surface damage.

www.ponsse.com

McMass

McMass Industries offers the Woody harvester heads, which offer endless rotation and a folding feature, which makes it possible for the heads to load CTL, pile, or do other jobs requiring a strong grapple without the feedrollers in the way.

They offer a high performance butt saw and topping saw. And the accurate measuring system with light barrier has many length and diameter presets. The robust and reliable construction of the head also qualifies it for bent logs and deciduous trees. It also has a high feed strength. Konrad Forsttechnik GmbH builds the Woody harvesters in Austria and has been producing the heads for over 16 years.

www.forsttechnik.at or www.mcmass.ca

Logset

Logset’s new modulated harvester head series consists of seven different models adapted for different tree sizes and
base machines. They include the 4M, 5M, 6M, 7L, 7X, 8L and 8X. The Mheads are well suited for thinning and smaller clear-cut machines. The L-heads are designed for large purpose-built harvesters, while the X-heads are for the heavier excavators and tracked-base machines. They all have the unique patented delimbing ring, Syncro-Knife, which is said to ensure clean delimbing.

The heads have an oversized tilt frame with a wide tilt angle, and shock absorbing reaction rods reduce the stress
on the head.

Feeding and knives are controlled by proportional pressure valves, which optimize results and minimize feed damage. Except for the 4M, 8L and 8X, all heads offer three alternative feedings: tracks, wheels and rollers. The SuperCut saw unit has an automatic chain tensioner, proportional chain lubrication, constant force on saw feed, as well as built-in sensors. The colour marking and stump spray device is optional.

www.logset.com

Pierce Pacific

After four years of research, development and testing, Pierce Pacific Manufacturing will soon launch the Titan 22, a state-of-the-art harvester/processor which will feature what the company says is among the most advanced and accurate measuring systems in the industry.

With the Titan 22, the quality and reliability of Pierce’s monoboom and telescopic delimbers have been brought to the harvester/processor market in a hightech way. The Titan 22 is a highly advanced, yet user-friendly, piece of equipment that offers the precision, efficiency and reliability that customers value, plus the quality support Pierce Pacific is known for.

The Titan 22 features a highly advanced measuring system with stopon- the-mark technology, real-time length and diameter readouts, and more. The design allows for easy harvesting at the stump or processing from a log deck, with an independent measuring circuit that provides unprecedented accuracy and maximum log utilization. In addition, a quick-change feature allows for a rapid switch to grapples.

www.piercepacific.com

Pro-Max

Pro-Max recently introduced two new products for the Western Canadian market— the Log Max 7000 and 12000 processors. These new processor arrangements feature a special hanging bracket designed for more efficient faster processing of decked wood. In addition to the two processor models, Pro-Max offers the full line of Log Max high performance harvesting and processing solutions: 928, 4000, 5000, 6000, 7000, 9000 and the 12000.

Log Max heads from Pro-Max use the Log Max IT control system with state-of-theart, six-wire CANbus technology, colour screen and new log optimization software.

Log Max heads feature strong full box section frames, a full range of roller options, patented low friction drive system, compound curve knives for high delimbing quality and high feed forces.

The Log Max 7000 and 9000 heads have variable displacement drive motors that automatically provide the best combination of speed and pulling power as needed.

Pro-Max is the distributor of Log Max harvester and processor solutions in Western Canada.

www.logmaxcanada.com

Quadco

Quadco offers the controlled- fall series and the L-Series processors. The controlled-fall series, also known as Ultimate, is available in 22” and 24” cut. That series fits the 22t class excavators (or larger) or purpose-built 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 2400 intermittent felling head, puts out 147 hp at the saw, a 63 per cent increase over the 5600 saw.

Quadco Equipment Inc is now the exclusive distributor for Keto heads in North America. The present Quadco offering in North America consists of five different groups: K51, K100, K150, K600TS and K825TS. The traditional models have two moving knives, while the LD4 and HD4 models have four knives/arms. TS models have a top saw. All Keto heads feature track feeds, which offer an excellent grip around logs, and the track feed in turn provides a proven base for dual-length measuring.

www.quadco.com

Rotobec

The Rotobec RSG-250B singlegrip 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 rotator—the R-6500—that considerably reduces potential damage to hoses and wires and related downtime, according to the company.

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

Valmet/Komatsu Forest

Valmet’s full line-up of engineered high-speed heads work the stump or landing. Heads include the 360.2 and 370.2 for wheeled harvesters, and the hearty 370E, 380, and 385 models for tracked harvesters, all controlled by Valmet’s MaxiHead system. New in North America is the Valmet 350, with three feed wheels and four feed motors. Valmet heads handle large diameters and work fast in limby wood. The heads deliver superior clamping and delimbing capabilities, fast working speeds, autochain tensioning, and feature component- co-ordinated design. The control system maximizes operator productivity and reduces costs.

Valmet’s Maxi system is well known for outstanding measurement accuracy, says the company, and allows operators to adjust settings and trouble-shoot without leaving the cab. Valmet also offers an economical bar-saw felling head with fast cycling and big-tree directional felling capability (up to 33”).

www.komatsuforest.ca

Waratah

Waratah’s 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 unit—featuring automatic chain tensioning with an electric pulse oiler for greater bar and chain life—or a durable 3/4” pitch 11H chain on the larger heads. A saw home detector stops feed rollers during cutting and the bar saver indicator light lets the operator know where the saw is at all times. The heads feature Waratah’s Logrite and T10 measuring and control systems.

The HTH 622B for 20 to 25 ton carrier classes offers improvements over the earlier HTH 622. Weighing 4,673 lbs, the 622B is 600 lbs lighter than the previous model. The modified main sawbox configuration allows for a lower stump height, up to a 35.5” bar and a Hultdins S100 saw unit is faster and 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.

www.waratah.net

FELLER BUNCHER

Barda

The 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

Caterpillar

 

The new Caterpillar 500 series track feller buncher machines have a complete line of Cat disc saw attachments to meet felling needs. Whether loggers are thinning in a plantation or select cutting in large diameter timber, a wide selection of single post models are available with standard 40 degree partial lateral
tilt, or an optional 220 degree full lateral tilt. These range in cut capacity from 20” to 24” for zero tail swing models (511/521/522/532) and 22” to 24” for full tail swing models (541/551/552) with the standard felling front linkage. The HF 181 felling head (20” cut capacity) is also available only on the full tail swing models when the long reach feller buncher linkage option is selected.

Designed to allow maximum visibility of the cutting area, all saws utilize high-pressure hydraulics for fast saw recovery and quick arm speed. This provides a positive impact on production and better tree control.

www.forestpro.com.

Gilbert Products

The Gilbert 3000 series felling heads are high performance units and are said to be among the most productive on the market. They are built without compromise to help loggers increase the profitability of their operations. The heads are available with Gilbert’s patented high rotation wrist, among the most widely recognized in the industry. The felling heads are outstanding in all types of operations, the company says. The heads have strong abilities in accumulation capacity in multiple tree gathering.

They control the stems for an impeccable grouping without any crossing. The sturdiness of the units allows the same felling head to shine equally in the harvesting of hardwood and in the harvesting of the huge trees on the West Coast. The 3000 series felling heads are available in three sizes: 22”, 24” and 28”.

www.gilbert-tech.com

Tigercat

The 5702 felling saw 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. And Tigercat-built cylinders are cushioned at both ends for extended life.

The Tigercat 5400 felling saw head for track feller bunchers is also a singlepost felling saw with asymmetrical geometry and an offset pocket and a cut capacity of 21.5”. 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-degrees, 110-degrees and 140-degrees). All wrists use annular ball bearings and heavy-duty construction.

Tigercat’s 650 harvesting head for wheeled and tracked harvesters offers efficient hydraulics for optimal fuel efficiency and a cut capacity of 26”.

www.tigercat.com

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 lb-ft, 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

Loewen Forestry Equipment

Loewen Forestry Equipment offers a two-gearbox 350 degree rotate mount. It converts the existing saw head, is simple to install—just unbolt the old and bolt on the new—and there are no extra hydraulics. With the high rotation wrist, operators will experience more versatility and productivity and do more than they thought possible, says the company.

It allows the operator to cut standing trees, and wind-fell trees, and place them in bigger bunches at any angle with a lot less movement of the carrier, increasing skidder efficiency—resulting in higher profits.

www.loewenforestry.com

Quadco

Quadco has a variety of felling options. The B-Series high speed saw heads are best suited for large timber. The patented “Arms Down” feature increases leverage to easily handle tall timber. Two cylinders per set of arms create greater holding power for better tree alignment and reduced butt friction.

The C-Series have the “Arms Up” style and are suited for small to medium size, drive-to-tree carriers in thinning. Quadco’s intermittent heads can perform effectively in special applications such as selective cutting, steep-slope and shovel logging, by stopping and retracting the ring saw. The four models are relatively lighter than a hot saw.

Lastly, Quadco offers two sheer models. The 216 twinpost is ideal for driveto- tree bunchers. The 6 sq-ft side pocket with a com-controlled accumulator arm and one-piece grab arm make it well suited for thinning. The 21” centre post high-speed shear with fast cutting cycles works best with boom machines and trees of various dimensions.

www.quadco.com

 


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