Tech Update - Harvesting, Processing and Felling Heads
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.
In 2006, Hahn began offering the 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
Reader Service Card #132
Hants’ Viking 650 and 525 are both 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 (giving them an angle when feeding big trees), and doubled pulse counters for diameter measuring.
Hants also offers the 400 and 1000 model Arbro-Stroke harvesters. 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”. www.hantsequipment.com Reader Service Card #133
John Deere has over a dozen harvester heads to fit loggers’ application needs. The new H480 with its longer upper delimbing knives makes it easier to pick-up stems, and the relocated lower knives’ pivot points and shorter bottom knives provide better delimbing quality and stem control. Its 25.6” cutting capacity can handle anything from late thinnings to regeneration harvesting. The smaller 745 is said to be ideal for a variety of wood sizes in both harvesting and thinning operations.
Its four fullysynchronized feed rollers are driven by high-efficiency motors which surround the stem for true four-wheel drive. www.johndeere.com
Reader Service Card #134
Kerik Technologies Inc The TreeKing PowerStroke processor heads have been purpose-built to revolutionize productivity in the forest industry. The TreeKing heads will handle a diversity of woodfrom 3” to 30”, in both soft and hardwoods. TreeKing has over 20,000 lbs of delimbing force using minimal hydraulic flow and can efficiently handle lengths between 8’ and 18.5’ in one stroke.
The KTI measuring system can automatically measure any length, or combination of lengths, and can do a diameter priority sort for all lengths. Its effective multi-stemming significantly increases productivity in small wood, and because the measuring system is independent of the tree, it offers very good length accuracy, according to the company. The absence of feed rollers reduces potentially damaging contact to the log during processing. And KTI’s focus on ergonomics and process simplification ensures reduced operator fatigue. www.ktiforest.com Reader Service Card #135
Kesla manufactures eight different models of roller heads. The line-up 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 with force ranging from 14 kN (3,500 lbs) to 30 kN (6,800 lbs). The maximum sawing diameter ranges from 450 mm to 750 mm. 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. The two-stroke heads include the 1,150-lb 20SH and the 1,760-lb 560SH, with sawing diameters of 18” and 25” respectively. Delimbing force is 9,000 lbs for the 20SH 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
Reader Service Card #136
Konrad Forsttechnik (distributed by McMass Industries) offers the Woody harvester heads, which feature 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.
The company offers 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 Reader Service Card #137
Pierce Pacific Manufacturing
Pierce Pacific has come out with the Titan 22. Extensive structural analysis has allowed the company to design a framework free of concentrated “hot spots,” and minimize cracking potential. An additional valve section increases drive power as well as butt saw speed, allowing increased production. The IntelliTec measuring system offers accurate, quality logs. Easy operation through the Windows-based colour touch screen allows for simple performance adjustment procedures, and easy access troubleshooting and diagnostics.
Pierce also offers the DHT 650 Series II, specifically designed for North American forestry conditions. Its robust frame is proven in the toughest hardwood applications and optimizes performance on a versatile range of carrier sizes. The DASA 4 measuring system offers precise, accurate quality logs. And the Windows-based colour touch screen allows for simple performance adjustment procedures and easy access troubleshooting and diagnostics. In addition, the self-cleaning measuring wheel assures accuracy advantages, even in demanding applications and at high feed speeds of up to 20 ft/sec. www.piercepacific.com and www.denharco.com. Reader Service Card #138
Durability and dependability are central to Ponsse harvester head design. The harvester heads must endure extreme stress and at the same time operate accurately and as gently as possible, so as not to damage the trunk surface unnecessarily. Ponsse harvester heads were developed in collaboration with the users; decades of experience and continuous product development make Ponsse a quality leader in harvester heads, says the company.
The structure of all Ponsse harvester heads is as simple as possible and, considering their performance capacity, the heads are also light. Their ease of use, efficiency and reliability have thus been taken to the utmost extreme. The valve system and other central components are protected against harsh conditions, but are still easy to service and adjust as necessary. The company has the new Ponsse H8 heavy duty harvester head and the new Ponsse EH 25 energy wood harvester head. www.ponssena.com
Reader Service Card #139
Fabtek processing heads have been rebranded as Prentice, and the line has been expanded to include Swedishengineered heads, field proven in South America and Europe. The heads can be mounted on excavators and purpose-built wheel or track harvesters and come in a variety of sizes for both hardwood and softwood. Various high speed or high torque motor sizes are available. Feed roller styles include spiked, machined, debarking and rubber with chain. Bar pitch saw systems include .404 and 3/4” 11H. Topping saws are optional and all saws have automatic chain tensioning. Expander bolts on most heads greatly increase pin and bushing life. Built-in diagnostics make troubleshooting simple.
With heavy-duty rotators and onepiece C-frame structures, several models are ideal for large diameter hardwoods. The heads tilt forward to allow the extended picking arms to grab a stem from a deck. Feed rollers cradle the stem with enough traction to get the job done fast without marring the wood. www.prenticeforestry.com
Reader Service Card #140
Pro-Max Services has released two new products for the Western Canadian market with great successthe LogMax 7000HD and 12000HD dedicated processors. These new processor arrangements feature a special hanging bracket designed for faster and more efficient processing of decked wood. Pro-Max also provides a full line of LogMax high performance harvesting and processing solutionsthe LogMax 4000, 5000, 6000, 7000, 9000 and the 12000. LogMax heads from Pro-Max use the LogMax IT control system with stateof- the-art six-wire CANbus technology, easy-to-read colour screen, and new log optimization software. They also 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 LogMax 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 LogMax harvester and processor solutions in Western Canada. www.pro-maxbc.ca
Reader Service Card #141
Quadco offers the controlled-fall series. 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 purposebuilt 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 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.
Quadco Equipment Inc is now the exclusive distributor for Woodstar heads in Canada. The present Quadco offering in Canada consists of seven different groups: WH50, WH60, WH70, WH75, WH95, WH105 harvesting heads and the WS333 as the bar saw. www.quadco.com Reader Service Card #142
The Rolly II harvester from Risley controls the tree with geared rotational control and is said to be ideal for many types of hardwood 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 Reader Service Card #143
Tigercat has just introduced the TH575 harvesting head. It is specifically designed to match the high performance capabilities of the Tigercat track carriers in harvesting, processing and debarking applications. It has a heavy-duty steel structure for high-duty cycles and features isolation mounted valve assemblies and clean hose routings for maximum uptime. Its unique three-wheel drive system is designed for faster feed speed and superior feeding power (8,670 lbs) and its large diameter-measuring wheel improves accuracy. It features a Motomit IT computer system, which is programmable for up to eight species and has 100 preset selections per specie.
The TH575 has a cutting capacity of 27.5” and an optional 31.5”. It’s fast too, with a feed speed of 19.7 ft/sec. The TF575 also comes with a variety of options, including top saw, a variety of feed rollers and measuring wheels, floating top knife, and more. www.tigercat.com Reader Service Card #144
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 and allows operators to adjust settings and troubleshoot without leaving the cab. Valmet also offers an economical bar-saw felling head with fast cycling and big-tree felling capability and up to a 33” cut. www.komatsuforest.ca
Reader Service Card #145
Waratah’s HTH hydraulic tree harvesters handle all types of harvesting applications and are available in the 600 and 400 series models. When big trees are the challenge, the HTH 624 Super and the HTH 626 Bigwood are up for the task. Large synchronized feed rollers, greater drive power, 3/4 pitch 11 HBC main saw units and topping saws, all in a touch frame design, make these heads unequalled in the industry, says the company.
The HTH 622B harvester is the most popular head for the 20-25 ton carrier class. The HTH 622B features a completely redesigned hanging bracket and frame design for added strength and durability. A superior grab-arm design, along with a find end photo eye and a Hultdins S100 saw unit, makes for quick cycle times of decked wood for roadside processing. Logging & Sawmilling Journal - June 2007 techupdate 25 from page 4 to page 6 The HTH 616 is the ideal choice for small wood processing up to 16” diameters, all the way down to delimbing post and rail in a mill yard. It offers all the features of the larger HTH head but in a smaller, more agile package for 20-ton units. www.waratah.net
Reader Service Card #146
Votec Innovation Ltd
Votec offers a variety of processing heads. The robust Hornet 620 has a processing capacity of 25”, requires no stick adapter and has multi-stem capability using parallel drive rolls and optional butt plate. It has a feed force of 8,125 lbs and feed speed of 18.15 ft/sec, and is recommended for a 20 to 22-ton carrier.
The larger Hornet 825 has a feed force of 12,000 lbs, a feed speed of 14 ft/sec and a processing capacity of 30”. There’s a fixed delimbing knife in front of the top saw and there is a choice of spiked, thumbnail or rubber feed rollers. With optional high speed feed roller motors, the 825 can achieve 17 ft/sec. It’s best for 25-ton carriers. The all new Hornet 720 is a purposebuilt high speed processor with a reverse operating format. It features an easily programmable computerized measuring system and large angled drive rolls offer superior support and traction. The proportional softclamp feature allows the operator to adjust the pressure on delimb arms and drive rolls for excellent log quality. The rugged self-sharpening delimbing arms and powerful feed force easily remove large limbs. www.votecinnovation.com
Reader Service Card #154
The QC1400 hot saw feller buncher model from Barda Equipment, a division of Davco Manufacturing Ltd, features new patent-pending, multi-tree cutting layout that decreases cycle times compared to single tree cutting systems. Designed for the RC100 Posi Track, 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. 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” trees. www.bardaequipment.com
Reader Service Card #147
Promoting sustainable forestry and profitable logging, 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 highpressure hydraulics for fast saw recovery and quick arm speed. This provides a positive impact on production and better tree control. www.forestpro.com
Reader Service Card #148
Endeavour offers the new SliceSaw: a self-contained intermittent ring saw that simply bolts on any current harvester/ processor, feller, grapple or delimber on the market, increasing attachment adaptability. With nearly the tooth speed of a bar saw, vastly improved landing capacities, a cut kerf of 1- 1/8”, and a weight of only 275 lbs, the SliceSaw increases adaptability, improves production and ensures reliability. It’s designed to operate in lightweight, low flow applications, and allows the operator to harvest more with less weight, horsepower and cost. The innovative tool is available to logging contractors and original equipment manufacturers for harvesting hard and softwood, salvaging blow-down, clearing brush, topping, felling, processing, grapple cutting, and more.
Endeavour also has in development the Heli-Harvester, which will be used to delimb and cut standing trees directly in the forest. Once cut, the Heli-Harvester transports the stems to the landing to be processed by ground-based equipment or transported by conventional means. www.endeavourequipment.ca
Reader Service Card #149
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, and have a large accumulation capacity in multiple tree gathering.
The heads 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 22”, 24” and 28”. www.gilbert-tech.com
Reader Service Card #150
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 and resulting in higher profits. www.loewenforestry.com
Reader Service Card #151
Madill Equipment Canada
Madill produces two feller-buncher sawheads for heavy-duty applications. Both sawheads are designed for use on Madill feller-bunchers, but are available for individual sale. With Madill fellerbunchers, the high-rotation and head tilt capability allow for large bunches and increased range of placementincreasing overall productivity.
Madill sawheads are high torque (600,000+ in-lbs), high-rotation (360 degree) hot saws, with one pair of grab arms and one pair of accumulating arms. Each arm has a dedicated cylinder for increased holding capacity, and grab arms are hydraulically synchronized. Madill sawheads are box-structure designed for increased strength, and have large covers for easy access to internal hydraulics. The MHS 24-7- 365 sawhead weighs 8,000 lbs and has a cut radius of 24.7". The MTT 22-7-365 has a cut radius of 22.7" and weighs in at 6,200 lbs. www.madillequipment.com
Reader Service Card #152
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. All those models are available with a cutting capacity starting from 20” and going up to 28”.
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. The cutting capacity is available from 22” to 29”. Quadco also offers two shear models. The 216 twin post is ideal for drive-totree 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
Reader Service Card #153
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