Equipment


Industry News


New Harvester Head models H423, H425 and H425HD


T


he H423 harvester head has been designed for thinnings and small-size trees. The more robust H425 and


H425HD harvester heads are designed for final fellings and big trees. The new harvester head models replace the previous H413, H415 and H415HD models.


A firm grip, four-wheel feed and high-performance delimbing ensure high productivity. Feeding is efficient and fast, thanks to the harvester head’s unique four-wheel drive and the mechanical locking of the differential. The changes made based on customer feedback improve ease of use, durability, performance, and economy. Customers are impressed with the


robust structure, increased durability, carefully routed hoses, and easy access to service points of the new harvester head models. The PEVO valve improves the


harvester head’s performance, adjustability, and economy compared to the predecessor model. Improved hose routing from the boom to the harvester head and from the valve block to feed motors improves hose durability. The new, hinged valve block cover makes daily maintenance easy. Grease points and the saw chain oil tank are also easier to access, and the


● Feeding force 27kN ● Maximum feeding speed 2.9 – 7.0m/s


● Weight starting at 1,360kg ● Base machines 1270G, 1470G


The H425HD harvester head model has the following features: ● Feed motor guards ● HD tilt handle ● Expander pins in the upper tilt cylinder, feed motor arms, and lower delimbing knives ● Weight: 1,390kg


greasing interval is longer than before. Also these models are equipped with the new SuperCut 100S saw unit. John Deere harvester heads are high-performance tools that meet the industry’s stringent quality requirements in all working conditions. Harvester head testing is part of John Deere’s product testing process. Each harvester head model has been field- tested for thousands of hours before the start of serial production. John Deere harvester heads are designed and manufactured in Finland.


H423 harvester head ● First thinnings, thinnings and early


regeneration felling


● Maximum cutting diameter 580mm ● Maximum opening of feed rollers 500mm. Ideal for thinnings and other fellings where the tree diameter at chest height is 150-35mm


● Feeding force 27kN ● Maximum feeding speed 4.3 – 5.3 m/s ● Weight starting at 955 kg ● Base machines 1070G, 1170G, 1270G


H425 harvester head Maximum cutting diameter 710mm Maximum opening of feed rollers 630mm Ideal for final and other fellings where the tree diameter at chest height is 250-500mm


The new SuperCut 100S saw unit for all John Deere harvester heads. In 2020, all John Deere harvester heads will have the new SuperCut 100S saw unit. The saw unit’s next-generation


chain tensioning unit, automatic chain tensioning, and mechanical bar locking give it added efficiency and reliability. The improved chain release makes it easier to replace the saw chain. The new saw unit enables also a bigger selection in terms of saw motors and saw bars. Further information: Elina Suuriniemi Communications Specialist John Deere Forestry Oy t. +358 400 466476 SuuriniemiElina@JohnDeere.com


Convert stumps to biomass feedstock


Convert large diameter stumps, round wood, branches, storm debris, land clearing, and other wood residuals into biomass feedstock. WSM’s 5472 Titan Horizontal Grinding System processes rubberwood and wood stumps at rates up to 50 metric tons per hour to an approximate 4”-6” minus biomass feedstock. The Titan Grinding System starts with our heavy-duty Chain Infeed Conveyor to meter the material to the Powered Feedroll. The 40” diameter pivoting Powered Feedroll provides superior climbing ability to feed material to the Titan


16 Forest Bioenergy Review Spring 2021


Horizontal Grinder. The massive Titan Grinder’s 54”


diameter x 72” wide rotor assembly includes hammers that weigh 195 lbs each and have replaceable tips. The pivoting grinder housing allows for easy maintenance access to the rotor and screens. Converting stumps to biomass


feedstock is one way we help our customers turn waste to profit. Contact us for more information on the Titan Horizontal Grinding System and learn how it might benefit your operation. 503-364-2213 www. westsalem.com or info@westsalem. com


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