Tech Update - Debarkers

Valon KoneValon Kone

Valon Kone (VK) is one of the leading manufacturers of high-speed ring debarkers, and a global company that specializes in the development and production of rotor debarkers.

VK’s extensive selection means that customers are sure to find a suitable machine for any debarking situation, regardless of wood type.

In North America, Valon Kone offers the Kodiak high-speed ring debarker. This model was specifically designed for the rugged North American market and offers exceptional uptime, debarking quality and low operating cost, says the company. State of the art safety features are also incorporated to suit North American requirements. Recent improvements have concentrated on dust control to suit Class II, Div II requirements, increased feed speeds and increased uptime. Rotor designs now offer oil collection systems.

Valon Kone now also offers the Variable Flare Reducing rotor (VFR) for automatic variable flare reducing on all debarker diameter ranges.

Valon KoneUSNR

USNR’s modular CamShift debarking system can be delivered with or without flare reducing, and with one or two debarking rotors.

CamShift has three rotor size options for feed speeds up to 130 m/min (425 ft/min) with one debarking rotor, and up to 150 m/min (490 ft/min) with two debarking rotors.

The CamShift 600 offers both log releasing tools and tool pressure adjustment during operation. The manually adjusted flare reducer rotor is infinitely adjustable for reduced diameters to 560 mm (22”). The pull-out design makes for easy set up and tool changes. Variations accommodate minimum log length and top-end or butt-end feeding.

USNR also manufactures a full range of Cambio debarkers to meet species and piece count requirements from minimum log diameters of 65 mm (2.5”) to a maximum of 795 mm (31”). The company’s debarkers get the job done on frozen logs, wavy logs, high value hardwood and high volume softwood logs, says USNR.

Kadant FujKingKadant Fuji King

Kadant Carmanah has been a leader in rotary debarking since first introducing the Fuji King debarker to North America 25 years ago.

The technology was initially developed to process fibre materials not suitable for ring or drum debarking. The ability to effectively process a wide range of species, shapes and sizes with varying moisture content and temperature elevated rotary debarking as a preferred choice by operators worldwide. Over 275 machines have been sold to oriented strandboard and pulpwood rooms, sawmills and pellet plants globally, many operating 24/7 in very tough conditions.

The Fuji King closed-bottom design differs from other rotary technologies, ensuring the highest fibre retention and reduced operational and maintenance costs, says the company. Bolt-on replaceable debarking blocks allow operators to quickly and cost effectively adjust the debarker’s aggressiveness to suit changes in wood conditions. This flexibility ensures that bark and fibre loss targets can be met year ‘round in all conditions.

Valon KoneDK-SPEC

The DK-SPEC debarker conversion is an excellent business decision, says the company. This is a key contributor to the production and optimization of wood product facilities. DK-SPEC’s rebuilt debarkers improve on mechanical reliability and speed at up to 400 ft/min.

Existing debarkers are rebuilt to new condition, the rotor is changed to new air bag technology and DK-SPEC can also convert to electric drive. Throughout the years, the company has successfully converted many 18”, 24” and 30” debarkers.

DK-SPEC is also said to be an excellent partner for debarker support. It has a large inventory of debarker parts and offers repair and overhaul service for debarker components and rotors.

Industrial Equipment ManufacturingIndustrial Equipment Manufacturing

Industrial Equipment Manufacturing (IEM) developed and continues to lead rotary debarking with innovation and technical advancements. Their impressive timeline includes; original live floor open rotary debarker in 1993; high performance small footprint side discharge rotary debarkers in 2002; mechanical electric gates in 2006; individual controlled reversible rotors in 2008; the three largest single line continuous flow rotary debarkers in the world based on capacity in 2012 and 2013; fully portable diesel electric rotary debarker in 2014; two of the world’s largest side discharge rotary debarkers in 2015 and 2016; 12 m tubes (40’) in 2016; and circulation rolls in 2017.

IEM says its debarkers easily handle conventional and unconventional fibre sources, to provide its users with the most efficient advanced debarker platforms anywhere in the world.


Morbark was founded in 1957 by sawmill operator Norval Morey to manufacture his patented portable pulp wood debarker, and the company’s commitment to the industry continues. It makes a full line of dependable, heavy duty debarkers.

Morbark says its multi-purpose debarkers will remove bark, nubs and knots from the densest hardwoods or the softest softwoods, as well as stringy-barked species like cedar or cypress, with ease.

In addition to providing high quality equipment, Morbark says its sawmill specialists can assist with mill layout while working with customers to create custom equipment to meet specialized needs.

Salem EquipmentSalem Equipment

Salem Equipment ring debarkers are offered in a full range of sizes for nearly every small or large log sawmill application.

Their updated product line now also includes a dual ring roll feed debarker for high speed operation. This is a great solution for softwood mills where throughput is critical.

Ring debarkers are offered in sizes 21”, 27”, 35” 43”, 50”, 60”, and 72”. Configurations of five tool arms and six tool arms are available.

Feed rates up to 350 ft/m are available in single debarker ring applications. Higher feed rates are available with dual debarker ring application.

Debarkers are offered with either stationary or moveable ring with corresponding moveable or fixed feed chains.

Logging and Sawmilling Journal
August/September 2017

On the Cover:
The Princeton, B.C. sawmill of Weyerhaeuser Canada has seen some major equipment upgrades in the last few years—but there is more to come, as the sawmill continues its efforts to make operations more efficient, and reduce costs. The two-line sawmill in the B.C. Interior turns out upwards of 300 million board feet of SPF lumber annually, and is undergoing a multi-year upgrade (Cover photo by Paul MacDonald).

Working to keep the risks of Climate Warming at bay
Warming climates up the risk of forest fires, and one community forest, in Burns Lake, B.C., is implementing a fire mitigation project that will help protect the town’s forest industry—and social assets.

Combo mill upgrade project
The Gilbert Smith Forest Products sawmill in Barriere, B.C. recently completed a lumber grading/sorting project that combines the lumber flow from the mill and planer through the same system, which required a good amount of ingenuity and resourcefulness since it involved combining new and used equipment.

Alberta forest industry update
Just in time for the Alberta Forest Products Association AGM in Jasper, Logging and Sawmilling Journal takes a look at what’s going on in the Alberta forest industry, and how the industry is dealing with the duties on lumber going to the industry’s #1 customer: the U.S.

Great equipment fit in the Gaspé
A new Ponsse ScorpionKing harvester is proving to be a great fit for brothers Jean François and Steve Lemieux, and their harvesting operation in Quebec’s Gaspé Region.

Mill Maintenance
Automatic lubrication is the best defense against mill downtime, say Roland Lorenz and David McDougall, of the Beka Group.

Major upgrade for Weyerhaeuser Princeton
Weyerhaeuser’s Princeton, B.C. sawmill is in the midst of a major upgrade that includes the front end of the mill and primary breakdown equipment.

Three important words in B.C. roadbuilding: diversify, diversify, diversify
B.C. roadbuilding outfit Black River Contracting does a fair amount of work for the forest industry, but company owner Kelly Sunderman finds it’s best to diversify their workload—and they may find themselves doing some work associated with the Kinder Morgan pipeline expansion, if it gets the go-ahead.

A Finnish focus in the forest
Ontario’s Shuniah Forest Products carries out logging the Finnish-Canadian family way, with a strong focus on their employees, teamwork—and their award-winning safety program.

The Edge
Included in this edition of The Edge, Canada’s leading publication on research in the forest industry, are stories from the Canadian Wood Fibre Centre, Alberta Innovates and Alberta Agriculture.

The Last Word


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