Associated Oregon Loggers, Inc.
2015 Madrona Avenue, Salem, OR
Logging Machines

Contents:

Logging Machines
Log Landing Machines
Forest Road Machines
Wood Transport Machines
Aerial Machines
Service Machines

Oregon timber harvesting operations employ many different machines that are unique to logging, forest road construction, fuels treatment and other forest management activities in Oregon forests. Often called “heavy equipment,” many of these specialized machines are purpose-built, sized, and designed for the exacting demands of the particular forestry task assigned. These logging machines are grouped into four categories, based on their forestry function: logging, landing, road, or service.

Logging machine image

LOGGING MACHINES

Oregon logging machines are the heavy equipment purpose-built to move logs & trees from the stump to the roadside log landing.

Logging machine image Logging machine image Logging machine image

Forwarder

Carry short & small logs; short-log self-loader, carries small logs from the stump to the roadside landing. Operator uses a loader heel boom grapple to load logs onto the forwarder bunk, to off-load logs at the roadside, and can also load logs onto log trucks. Machine suited for thinning.

Logging machine image Logging machine image

Harvester-Processor

Small-tree faller and short-log cutter; cut & fall small trees in controlled direction, delimbs, and cuts tree into logs (”bucks”); automated cutting head; on-board computer optimized cutting of logs; can work on moderately steep slopes. Machine suited for thinning.

Logging machine image Logging machine image

Feller-Buncher

Tree faller; tracked machine cuts, falls trees in controlled direction & places trees onto piles “bunches”. Can work on moderately steep slopes.

Logging machine image Logging machine image

Wheeled Feller-Buncher

Tree faller; wheeled machine cuts, falls trees in controlled direction & places trees onto piles “bunches”. Can work on gentle slopes.

Logging machine image

Small Wheel Feller-Buncher

Small tree faller; wheeled tractor-sized machine cuts, falls small trees in controlled direction & places trees onto piles “bunches”; Suited for thinning on gentle terrain.

Logging machine image

Mulcher/Masticator

Small tracked machine with mulching attachment; grinds thick forest understory brush, limbs, and tree tops into woody mulch; intended to reduce fire hazard, prepare for reforestation, or improve habitat. Mulcher comes in different sizes and configurations, tracked, wheeled, and front- or boom-mounted.

Logging machine image

Roadside Brush Cutter

Mobile machine clears roadside brush; wheeled or tracked machine powers a boom-mounted grinding head that is moved to the roadside for cutting limbs & other vegetation; machine clears roadsides of unwanted brush overgrowth that clog roadsides.

Logging machine image

Shovel Logger

Tracked boom logger “swings” logs to the roadside landing; mobile purpose-built machine picks-up, swings, and moves logs by swinging them from side-to-side. Operator uses its loader heel boom grapple to reach far to the side, grab, lift, swing-around the log, and place them far to the opposite side—after moving the entire machine, the operator then repeats the motion until the logs are swung all the way to the roadside landing. Shovel can also conduct stream enhancement, wood placement.

Logging machine image

Skidder

Wheeled log puller; purpose-built machine grabs logs, or whole trees, with grapples or choker cables—lifts the front ends of logs off the ground, then pull logs to the roadside landing.

Logging machine image

Small Skidder

Wheeled or tracked small log puller; this small-sized purpose-built machine grabs logs, or whole trees, with grapples or choker cables—lifts the front ends of logs off the ground, then pull logs to the roadside landing. Suitable for thinning and partial cutting on gentle terrain.

Logging machine image

Skid Cat (Track Skidder)

Tracked log puller; purpose-built machine grabs logs, or whole trees, with grapples or choker cables—lifts the front ends of logs off the ground, then pull logs to the roadside landing. On slopes, tracked skid cat has better traction than wheeled skidder.

Logging machine image

Brush Piling Shovel

Tracked boom machine piles “slash” in harvested area; mobile purpose-built machine (a small ‘Shovel Logger’), picks-up, moves, and places excess logging debris, called “slash,” into compact piles. Operator uses its loader heel boom grapple to reach far to the side, grab, lift, move the slash—surplus tree limbs, tops and broken pieces. Site is readied for reforestation and piles can be later burned. Shovel can also conduct stream enhancement, wood placement.

Logging machine image

Brush-Rake Piling Cat

Tracked dozer machine piles “slash” in harvested area; this dozer is equipped with a brush rake blade; the dozer pushes, moves, and places excess logging debris, called “slash,” into compact piles or rows. Operator moves the slash—surplus tree limbs, tops and broken pieces. Site is readied for reforestation and piles can be later burned.

Logging machine image

Log Loader Attachment, Yarder

Log loader conversion attachment to create a small yarder. A small-log, tracked cable lifter with a boom; this mobile short-distance machine’s cable is rigged from the boom to the harvest area below the road; a carriage rides the cable and connects to logs using additional cables; logs or small trees are lifted and carried on slopes from the stump to the roadside landing area. Several attachment configurations possible: yoader yarder with carriage; jammer highlead, or tong thrower.

Logging machine image

Truck/Trailer-Mount Yarder

Small-log, cable lifter; cable is rigged from the short tower (20-40’ tall) to the far side of the harvest area; a carriage rides the cable and connects to logs using additional cables; logs or small trees are lifted and carried on slopes from the stump to the roadside landing area; suitable for thinning.

Logging machine image

Small Swing Yarder

Small-log cable lifter; cable is rigged from the short tower (40-60’ tall) to the far side of the harvest area; a carriage rides the cable and connects to logs using additional cables; logs or whole-trees are lifted and carried on slopes from the stump to the roadside landing area; suitable for thinning.

Logging machine image

Mobile Yarder

Medium-log cable lifter; cable is rigged from the mid-sized tower (50-70’ tall) to the far side of the harvest area; a carriage rides the cable and connects to logs using additional cables; logs or whole-trees are lifted and carried on slopes from the stump—often suspended fully off the ground—to the roadside landing area; suitable for thinning.

Logging machine image

Tower Yarder

Large-log cable lifter; cable is rigged from the high tower (70-110’ tall) to the far side of the harvest area; a carriage rides the cable and connects to logs using additional cables; logs or whole-trees are lifted and carried on slopes from the stump—often suspended fully off the ground—to the roadside landing area.

Logging machine image

Cable Yarding Carriage

The “carriage” machine is a log-mover that rides on an aerially-suspended cable “skyline”. Most common in Oregon is the radio-controlled, motorized carriage (called “car”); its’ movements are controlled by workers with radio devices (called “bugs”), and audible signals (called “tooters”). The carriage motor pulls a cable, log chokers, and logs off the ground upward toward the carriage; then, the “yarder” pulls the cable connected to the carriage, and the logs, from the stump to the yarder located at the roadside log landing area. When the logs are disconnected at the landing, the process is reversed, sending the carriage flying back through the sky to the location where the next logs will be moved. Carriages come in different sizes and five types: motorized drum, motorized slack-pulling; grapple; mechanical; manual; and gravity.

Logging machine image Logging machine image Logging machine image

LOG LANDING MACHINES

Oregon log landing machines are the heavy equipment purpose-built to work at the roadside “landing” to process trees & logs. The “landing” is the location on, or alongside, a forest road where trees & logs are processed, sorted, decked and loaded onto trucks.

Logging machine image Logging machine image Logging machine image

Shovel

Tracked log loader and sorter; machine swings in a full-circle to move, sort, pile & put logs on log truck; also moves, piles & loads logging debris. Operator uses its loader heel boom grapple to grab, move and place logs.

Logging machine image

Processor

Tree delimber and log cutter (dangle-head process). Tracked machine with loader boom, removes limbs & cuts trees into logs (“bucks”). Machine often works at landing; automated cutting head; on-board computer optimized cutting of logs.

Logging machine image Logging machine image

Stroke Delimber

Tree delimber and log cutter (log length process). Tracked machine with stroke boom, removes limbs & cuts trees into logs (“bucks”). Machine often works at landing; automated cutting head; on-board computer optimized cutting of logs.

Logging machine image

Wheel Log Loader

Wheeled log front loader; log mover at helicopter log drop or at the timber mill; move & load logs

Logging machine image

Letourneau Log Loader

Log un-loader at timber mill; remove entire truck-load of logs from truck in a single grab.

Logging machine image

Landing Cat

Tracked dozer; builds and smooths landings, improves road drainage, move debris; anchors cable rigging; pulls rigging & logs, road/landing work

Logging machine image

Grinder

Machine grinds waste wood into useable wood biomass. Ground wood, “hog fuel” is moved by conveyor into a waiting semi-truck trailer.

Logging machine image

Delimber-Debarker-Chipper

This chipping machine produces low-bark-content chips for wood pulp and pellet mills; the in-field pulpwood chipping plant processes whole trees in one continuous operation—removing libs & bark, before chipping thee wood fiber. Bark is sorted into a wood biomass pile of “hog fuel,” while wood chips are blown into a waiting semi-truck trailer.

Logging machine image

Debarker

This debarking machine produces removes the bark & limbs from logs; in-field debarking plant prepares logs to be chipped in another machine for wood pulp and pellet mills. Bark is piled for later use as wood biomass “hog fuel.”

Logging machine image

Heavy Fire Truck (Engine)

Large firefighting water tanker; fully-equipped heavy truck to fight forest fires, pump, hose reel, hose, fire tools, portable pumps, tanks & gear. Used to extinguish unwanted fires near forest operations, and also for controlling prescribed burning of forest fuels.

Logging machine image

Fire Truck

Firefighting water tank truck; equipped truck to fight forest fires, pump, hose reel, hose, fire tools & gear, Used to extinguish unwanted fires near forest operations, and also for controlling prescribed burning of forest fuels.

Logging machine image

Slip-On Fire Pumper (on Truck)

Pickup truck equipped with slip-on fire pumper; Small firefighting vehicle temporarily loaded with “slip-on pumper,” which is a small water tank, pump, hose reel, hose & fire tools. Used to extinguish unwanted fires near forest operations, and also for controlling prescribed burning of forest fuels.

Logging machine image

Fire Trailer

Trailer equipped with a fire pumper. Small firefighting trailer pulled by a heavy truck; pumper includes a small water tank, pump, hose reel, hose & fire tools. Used to extinguish unwanted fires near forest operations, and also for controlling prescribed burning of forest fuels.

Logging machine image

Fire Forwarder (Slip-On)

Log skidder/forwarder equipped with slip-on fire pumper; Small off-road firefighting vehicle temporarily loaded with “slip-on pumper,” which is a small water tank, pump and hose reel. Used to extinguish unwanted fires near forest operations, and also for controlling prescribed burning of forest fuels.

Logging machine image

Fire Dozer

Firefighting dozer and truck; dozer prepared to dig fireline and fight forest fires near forest operations, and also for controlling prescribed burning of forest fuels.

Logging machine image

FOREST ROAD MACHINES

Oregon forest road machines are the heavy equipment purpose-built to build and maintain forest roads and landings, keeping them in good shape. Forest roads provide important access to manage and protect forestlands throughout the life of a forest.

Logging machine image Logging machine image Logging machine image

Dozer

Tracked dozer; forest road builder, blade pushes dirt, rock; anchors cable rigging; and plows snow. Works on road construction, heavy road maintenance, and at the forest rock quarry.

Logging machine image

Excavator

Tracked road builder, digging bucket; digs-lifts-loads dirt & rock to build forest roads; lifts bridge parts and culverts. Works on road construction and at the forest rock quarry.

Logging machine image

Track Hoe Excavator

Tracked road builder, clam-shell dig bucket; digs-lifts-loads dirt & rock to build forest roads.

Logging machine image

Heavy Excavator

Large tracked road builder, large boom and heavy digging bucket; digs-lifts-loads dirt & rock to build forest roads; lifts bridge parts and culverts. Works on road construction and at the forest rock quarry.

Logging machine image

Dump Truck

Large hauling truck with a rear dumping box; hauls dirt, rock, wood debris, and trailers—to build & repair forest roads. Can pull a utility trailer to haul other equipment.

Logging machine image

Off-Road Dump Truck

Very large construction hauler with a rear dumping box; over-size hauler of dirt, rock or wood debris to build & repair road. Works on forest road construction and at the rock quarry.

Logging machine image

Grader

Wheeled road smoother with blade; purpose-built machine smooths & shapes forest road surface; and plows snow. This important machine most often provides periodic road repair & maintenance, but may also works on forest road construction.

Logging machine image

Roller-Vibratory Soil Compactor

A heavy construction machine; heavy roller and vibration mechanism used for compaction of forest road subgrade and rock surfacing

Logging machine image

Compactor

A heavy construction machine; steel grid wheels and blade used for heavy-duty forest road subgrade compaction and dozing operations

Logging machine image

Backhoe

Small wheeled or tracked digger; bucket scoops, digs & loads, small jobs, repairs forest roads and road drainage

Logging machine image

Ditch Hoe

Wheeled road repairer; Gradall digging bucket; scoops, digs & loads dirt to repair forest road ditches

Logging machine image

Wheeled Loader

Wheeled bucket front loader; digging bucket on front; scoops & loads rock-dirt-snow. Can work at the forest rock quarry, on forest road construction, or for snowplowing forest roads.

Logging machine image

Rock Crusher & Conveyor

This rock crushing machine produces gravel and construction aggregate, an important component used on forest roads. The in-field mobile crushing plant processes large rock, sorts/screens rock into desired sizes, and moves rock on conveyors into a pile. Crusher is on tracks, or a wheeled trailer that’s pulled by a semi-tractor truck. Works at the forest rock quarry.

Logging machine image Logging machine image

Rock Drill

Tracked machine to drill holes into rock, preparing for rock blasting. Works at the forest rock quarry and on forest road construction.

Logging machine image

Bridge Crane

Large wheeled crane; lifts bridges into place. This heavy lifter has a telescoping boom and a cable winch that can reach far & high to move bridges over streams during forest road construction.

Logging machine image

Water Tender

Tanker truck hauls water; pumps/hauls over 2,000 gallons of water to spray forest roads to control dust. Also used to extinguish unwanted fires near forest operations, and also for controlling prescribed burning of forest fuels.

Logging machine image

Hydro-Seeder Trailer

Trailer equipped with a hydro-seed machine. Machine includes a water tank, and hoppers for grass seed and mulch, mixer, pump and spray hose; trailer pulled by a heavy truck. Used to spray grass seed & mulch mixture that re-vegetates forest roadsides, ditches and landings for erosion control.

Logging machine image

Pressure Washer Trailer

Trailer equipped with a slip-on pressure washer and tank. Unit mounted either on a utility truck or trailer; includes a water tank, pump, and spray hose; trailer pulled by a heavy truck. Used to spray-clean heavy equipment that removes debris, soil and weed seeds to prevent invasive seed transport.

Logging machine image

WOOD TRANSPORT MACHINES

Oregon wood transportation machines are the trucks and industrial transport equipment purpose-built to haul logs, wood chips, and biomass hog fuel. These machines work on the forest roads, highways, waterways, and railroads to deliver the timber from Oregon forests to forest product manufacturing plants (known as “mills”). It’s also common for timber to be off-loaded and reloaded at sort yards and reload yards, while in route to timber mills and markets.

Logging machine image Logging machine image Logging machine image

Long-Log Truck

Semi-truck, 18-wheel log hauler; semi-truck & long-log trailer hauls 40’-long logs from forest to mill. The load length is adjustable by a telescoping “stinger” that pulls the two rear axles; longer logs or utility poles can be hauled when rear axles are extended. Truck equipped with on-board electronic scales.

Logging machine image

Short-Log Truck & Trailer

Semi-truck 12-wheel log hauler, pulling a “hay rack” short-log trailer; semi-truck hauls 30’-short logs; hay-rack trailer hauls 30’-short logs from forest to mill. Trailers come in different configurations, depending on log lengths & weights. Truck equipped with on-board electronic scales.

Logging machine image

Self-Loader Log Truck

Semi-truck, 18-wheel log hauler equipped with loading boom; truck driver operates loader heel-boom grapple to load logs; semi-truck & long-log trailer hauls 40’-long logs from forest to mill. Truck equipped with on-board electronic scales.

Logging machine image

Chip Van Truck

Semi-truck, 18-wheel semi-truck wood fiber hauler; truck pulls a 40’ long open-top trailer van that hauls wood chips or biomass “hog fuel” from the forest to mill; more commonly, it hauls from mill-to-mill.

Logging machine image

Log Railcar

Cargo railcars purpose-built for transporting a train of logs long distances in Oregon. Logs are loaded using a log loader at a “reload yard,” located along a railroad siding—then off-loaded at an intermodal yard, reload yard, or timber mill. Special railcars also can transport wood chips. Railcars are pulled by a powerful diesel train “engine,” which can move 1 ton of freight 480 miles on 1 gallon of diesel fuel.

Logging machine image

Log Barge

Cargo barges purpose-built for transporting logs long distances on the Columbia River or along the Pacific Coast to port facilities. Logs are loaded using a log loader at an intermodal “reload yard,” located at a port dock—then off-loaded at another intermodal port facility. Special barges also can transport wood chips. Barges are “towed” (pushed or pulled) by a powerful diesel tugboat, which is the most fuel-efficient means of log transport.

Logging machine image

Cargo Ship

Ocean-going, general cargo ship transports logs and wood chips long distances from Oregon and Washington port facilities to international markets. Logs and chips are prepared for export shipping, then loaded onto the break-bulk ship at a deep water port. Oregon logs and chips are grown, manufactured, transported and merchandised to international markets in the Pacific Rim and around the globe. Export of primary forest products (logs and wood chips) is an important contributor to Oregon’s economy—just as are exports of other valuable Oregon non-manufactured commodities, including: wheat, scrap metal, fertilizer, hay, and a vast number of other agricultural products. Although logs and chips are considered a “non-manufactured commodity,” their production demands significant investment in skilled labor, technology, manufacturing and transportation—all assets in which Oregon excels.

Logging machine image AERIAL MACHINES

Oregon aerial machines are the aircraft purpose-built to lift and fly forest products, supplies, and forestry workers during important management projects in Oregon’s forests. There are additional machines and equipment necessary strictly to support these helicopters and airplanes.

Logging machine image Logging machine image Logging machine image Logging machine image

Heavy-Lift Helicopter

Aerial lifter of heaviest cargo loads; aircraft lifts and flies logs (or whole trees) far off the ground, while suspended from a longline cable; logs are moved long distances from the stump to the roadside landing area. Cargos of multiple large logs, tall trees, bridge, large firefighting water bucket, fire retardant, hydro-seeding, forestry work crews, or heavy forest road-bridge construction materials; helicopter operated by two pilots.

Logging machine image Logging machine image Logging machine image

Aerial Truck Helicopter

Aerial lifter of large cargo loads; aircraft lifts and flies logs (or whole trees) far off the ground, while suspended from a longline cable; logs are moved long distances from the stump to the roadside landing area. Cargos of larger logs, trees, firefighting water bucket, fertilizer bucket, seeding & mulching, or forest road-bridge construction materials; helicopter operated by one pilot.

Logging machine image Logging machine image Logging machine image

Utility Helicopter

Aerial lifter of mid-sized cargo loads & personnel. Aircraft lifts and transports a variety of forestry cargos, including: forestry work crews, fertilizer bucket, herbicide spray boom, seed-cone collector bucket, prescribed burning torch, firefighting water bucket, forest construction materials, or logs. Small logs are suspended from a longline cable, and moved distances from the stump to the roadside landing area; helicopter operated by one pilot.

Logging machine image Logging machine image Logging machine image

Light Utility Helicopter

Aerial lifter of personnel & small cargo; aircraft flies forestry personnel, or lifts light cargo suspended from a longline cable; forestry personnel conduct aerial reconnaissance and resource surveys. Small cargo of 2-3 people, prescribed burning torch, firefighting water bucket, seed-cone collector bucket, or forest construction materials; helicopter operated by one pilot.

Logging machine image Logging machine image Logging machine image

Helicopter Service Trucks & Trailers

Located in the forest, the mobile field service trailers & trucks support the helicopter; aircraft field mechanic’s mobile shop staffed by a field service mechanic and mechanic’s assistants. Helicopters employed in forestry projects typically return to the nearby service landing hourly for routine maintenance, refueling and work planning; trucks pull purpose-built shop trailers.

Logging machine image

Air Fuel Tanker

Helicopter fuel refill truck; hauls aviation fuel to refuel helicopter at the field service landing location near the project.

Logging machine image

Fertilizer Hopper Truck

Helicopter fertilizer refill truck; hauls tree fertilizer that is lifted and spread aerially by a helicopter equipped with a fertilizer bucket; located at the field service landing location near the project.

Logging machine image

Fire Retardant Heavy-Bomber

Aerial flyer of fertilizer-based forest fire retardant; multi-engine airplane carries & drops a cargo of water mixed with a specially-formulated pink power that helps dampen flames, when dumped on a wildland forest or range fire; aircraft operated by two pilots. Forest fire retardant is a non-toxic water-based slurry that acts as a fertilizer for plant life.

Logging machine image

Fire Retardant Light-Bomber

Small aerial flyer of fertilizer-based forest fire retardant; airplane carries & drops a cargo of water mixed with a specially-formulated pink power that helps dampen flames, when dumped on a wildland forest or range fire; aircraft operated by one pilot. Forest fire retardant is a non-toxic water-based slurry that acts as a fertilizer for plant life.

Logging machine image

Small Airplane; Lead Plane

Small airplane (pictured left) that directs flight of forest fire retardant bomber; “lead” airplane flies in front of the larger retardant-carrying plane to instruct the proper flight path and drop location on the wildland forest or range fire on the ground; aircraft operated by two pilots. Small airplanes are utilized in several additional forestry assignments, including: fire patrol; aerial surveys; reconnaissance; aerial photography; and long-distance personnel transport.

Logging machine image

SERVICE MACHINES

Oregon service machines help other machines work in the forest, by moving the crew, skilled professionals, tools, rigging, fuel, repair parts, and supplies. Specialized purpose-built forestry service machines to keep the forest heavy equipment operating. One machine, the simulator, helps train new operators how to use complicated controls on the heavy equipment.

Logging machine image Logging machine image Logging machine image

Simulator

Specialized computer simulators are purpose-built to mimic a specific forest machine. Simulator provides new operator training to help teach proper use of complex machine controls and operating procedures. Operator sits in the seat at the controls, just as he or she would in the cab of the actual forest machine. Simulator has actual machine controls, joysticks, toggles, buttons, levers & peddles, which in real-time simulates on computer monitors the machine’s logging performance.

Logging machine image

Heavy Service Truck

Field mechanic’s heavy truck; driven by a field service mechanic and mechanic’s assistant, the truck helps repair & service other machines; truck can also pull trailers

Logging machine image

Light Service Truck

Field mechanic’s smaller truck; driven by a field service mechanic and mechanic’s assistant, the truck helps repair & service other machines; truck can also pull trailers

Logging machine image

Line Spool Truck

Rigging haul truck; heavy tractor flatbed truck, includes a powered spool that pulls & unwinds cable; carries cable, carriage, gear on roads; can also pull a trailer.

Logging machine image

Low Boy

Machine ‘heavy hauler;” multi-axle semi-tractor and trailer, designed for hauling heavy forest machines on roads from job-to-job

Logging machine image

Pilot Car

Vehicle leads oversize loaded trucks; often a pickup truck, which leads the over-dimensional heavy equipment load that follows on the public highway—usually a low boy truck & trailer. Pilot car signed indicates “Oversize Load.” Pilot vehicle and driver may assist in traffic control maneuvers for the lowboy.

Logging machine image

Fuel Truck

Diesel fuel refill truck; this tank truck hauls & pumps diesel fuel to refuel machines and fuel trailers.

Logging machine image

Fuel Trailer

Tank trailer hauls & stores fuel; diesel refill tank & pump used to refuel other machines; pulled by a heavy truck.

Logging machine image

Utility Trailer

Trailer to haul small machines; pulled by a another truck; trailer used to haul small forest machines, culverts, cable, carriages, fire pumps/tanks, rigging, and road construction materials—travels roads from job-to-job.

Logging machine image

Pickup Truck (“Rig”)

Heavy-duty pickup truck; often loaded with a diesel refill tank that fuels other machines. A common vehicle on every forest jobsite, this pickup truck transports 1-2 workers, fuel, rigging and tools.

Logging machine image

Flatbed Utility Truck

Mid-weight utility truck; vehicle transports rigging & tools; often loaded with a diesel refill tank that fuels other machines; transports 1-2 workers.

Logging machine image

Crew Cab Truck

Heavy-duty crew cab pickup truck; 4-door transport vehicle for small crew [3-5 workers], rigging & tools; often loaded with a diesel refill tank that fuels other machines.

Logging machine image

Crummy

Crew bus; transport vehicle for a large crew [6-12 workers] and their tools; vehicle can be a small utility bus (shown) or a 10-12 passenger van.

Logging machine image
Logging machine image Logging machine image Logging machine image