Cable Yarding Equipment

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Owren Yarding Systems

The Owren 400, from Owren Yarding Systems Ltd, is a hydrostatically driven cable crane for uphill, downhill and flat terrain logging. The maximum reach, when using the running skyline system, is 350 metres. When using a standing system, maximum reach is 500 metres. Hydrostatic drive eliminates the need for clutches or brakes and offers 100 per cent control of the line with speeds from zero to 23 feet per second, while the carriage reels 100 feet of drop line in or out. It offers the capability for intermediate supports (or multispanning) with the running skyline system and has a 33.5' tower and a pulling capacity of 13,230 lbs. Different types of carriages may be used. With a three section drum type carriage, the main line enters on the upper side of the lefthand drum section, the slack pulling line enters on the lower side of the right hand section and the hoist line is reeled on the middle drum section. Powered by a 180hp, six cylinder Deutz, turbo diesel water-cooled engine, the Owren 400 is electro hydraulically controlled by a cable and two joysticks placed on the portable, external operating desk. The cost efficient system is environmentally friendly, requires minimal setup time and yields high production, the company says. The extremely hard sheaves in the blocks give long life to the ropes. Circle Reader Service Card #575

Global Forest Equipment

The URUS II Universal 400 and 600 skyline yarders, from Global Forest Equipment Ltd, are designed for uphill and downhill logging. The 600 features a 185hp Cummins 6BTA engine and a 40foot tower, while the 400 has a 140hp Cummins engine and a 36 foot tower. Both machines have hydrostatic winch drives, mainlines and backhauls complete with band brakes and hydraulic raising and lowering of the towers. The skylines have safety clutches for tensioning and quick release brakes for dropping the skyline. Carrier options include trailer, truck or skidder mounting. The URUS I Universal 300 skyline yarder has a 33foot tower, a 100hp Cummins engine, a mechanical winch drive and winch assembly features similar to the larger machines. Carrier options include single axle trailer and truck mounting. Circle Reader Service Card #576

Christy Manufacturing Inc

The Christy HD yarder from Christy Manufacturing is an economical option available with a motorized eaglet carriage. It features a 49' telescoping spar, a 177hp turbocharged diesel engine and a four speed Allison automatic transmission. The skyline drum capacity is 2,000' of 3/4" line with a line pull of 43,000 lbs. The mainline drum capacity is 2,100' of 5/8" line, also with a line pull of 43,000 lbs. With four guyline drums, each with a capacity of 210' of 9/16", and a snap guy with 190' of 9/16", the HD yarder has a third drum with a capacity of 4,000' of 7/16" line. The Christy three drum slack pulling carriage comes in three models: the 400lb regular, the 540lb heavy duty and the 1,750 lb large. The low maintenance carriage can be used for lateral skidding, for airborne logs and for yarding downhill. It can be used as a gravity carriage with two drums. Interlock drums are not required. T E C H U P D AT E The carriage automatically locks itself alternately to the skyline and the mainline. It has one moving part in the locking mechanism, cam action and self tightening skyline stops. Circle Reader Service Card # 577

Madill

Madill now manufactures eight cable yarder models, including five swing yarders and three tower yarders. The improved 255B swing yarder is capable of long span skyline logging with a motorized carriage or interlocked skyline logging with a slack pulling carriage. It has a 50foot tower, a Cat 450hp 3406E engine coupled to a twin disc five forward and one reverse powershift transmission. The 124 model offers a 60foot tower, a Detroit 450 hp engine, front and rear main drum capacity of 2,550' of 7/8" line and 92,000 lbs of pull. The 335hp 6250 and the 330 hp 120 models offer 50' towers, while the 230hp 6240 has a 40' tower. Madill's tower yarders include the 450hp 172 fivedrum yarder with a 72' telescoping high strength tower with hydraulic cylinders for raising, telescoping and tilting. Its skyline drum has a 3,200' capacity of 1" and 135,000 lbs of pull. The 330hp 6150 has a 50' tower and a skyline capacity of 2,000' of 7/8" with a bare pull of 56,410 lbs, while the 175hp 6140 model has a 40' tower and a skyline capacity of 2,000' of 3/4" with a bare pull of 55,210 lbs. Madill has incorporated its trademark tilt open machinery house for full maintenance access. Circle Reader Service Card #578

Skylead Logging

Skylead Logging Equipment Corp offers the Skylead C40 16000 series skyline cable yarder for uphill and downhill logging, selective logging, commercial thinning and clear cutting. With a low moving cost and fast set up time, the system requires a minimum of support equipment and operates on narrow trails and landings. It has a 40' round tubular latticed tower that is lightweight and withstands greater side pulls than a hollow tube design. Engine choices include Cummins 4B3.9C or the more powerful 6B5.9C. The mainline capacity is 2,000' of 1/2", haulback capacity is 4,200' of 1/2" and the skyline capacity is 2,000' of 3/4". Four guylines each have a 200' capacity of 3/4". The Skylead C7 twospeed slack pulling carriage features T1 steel construction, a 14hp twin cylinder diesel engine with automatic shutdown for low oil pressure or high air temperature and four skyline sheaves (two, 10" sheaves mounted on 4' centres and two sixinch sheaves for smoother and faster jack crossings). With a load capacity of 15,000 lbs, the C7 has a completely hydrostatic drive, meaning fewer moving parts. The Skylead 6000 Series longline system features a 4BTA3.9C 150hp Cummins turbocharged and aftercooled engine and a 545 Detroit Allison four speed transmission. It has a mainline drum capacity of 6,000' of 5/8" swag cable and a maximum line pull (mid drum) of 15,428 lbs. The strawline capacity is 6,000' of 3/8" swag cable. Circle Reader Service Card #579

Diamond Manufacturing

Designed with high line speeds and pulls, the D2000 Series swing yarder from Diamond Manufacturing offers a Cummins engine and Funk transmission. Maximum horsepower is provided with direct drive to the bull gears. The 70,000lb machine moves in one piece for high mobility both in and out of the woods. The true walkover guyline feature makes changing roads even easier, the company says. The skyline capacity is 2,000' of 7/8" with a pulling force of 48,000 lbs. The mainline has a 1,900' capacity of 5/8" and a pull of 40,250 lbs, while the haulback capacity is 3,200' of 1/2". Three guylines each have a capacity of 185' of 7/18". The DT 8000 Series slack line tower yarder has either a Cummins N14 or a Cat 3406C engine offering 430 hp. The skyline has a capacity of 2,400' of 1 1/8" line and a maximum line pull of 134,985 lbs. The mainline and haulback drums are identical enabling them to be used as main and slackpuller or as main and haulback. Drum capacity is 2,700' of 3/4" or 5,500' of 1/2" as haulback, with a maximum line pull of 104,000 lbs. Both yarders come with Comfort Plus cabs offering superior visibility and operator comfort. Circle Reader Service Card #580

Teleforest Inc

The cable yarding system manufactured by Teleforest Inc features minimal capital investment, low production costs, easy operation, mobility, stability and safety, the company says. The self-propelled carriage is equipped with a TL3000C telecarrier and a 71hp diesel engine. It has a dropline length of 75 metres, a travelling speed of 6.1 metres per second and a pulling strength and lift capacity of 6,000 lbs. The mobile spar tower height is 14.5 metres, with 4,000 psi hydraulic pressure and hydraulic flow of 20 gpm. The skyline drum has a hydraulic winch and features 22.2mm cable diameter, 455metre cable length and 18,725lb initial tension. Speed is rated at 250' per minute. Circle Reader Service Card #581

Boman Industries

The lightweight Mark VH carriage from Boman Industries provides speed, strength, productivity and reliability. With a 106 hp Deutz four cylinder aircooled turbo rated engine, it weighs 3,250 lbs and has a drum capacity of 300 feet of 5/8" line and 400 feet of 9/16". The skyline diameter incorporates 7/8" to 1 1/4", 16" Tommy Moore and skyline sheaves. Line speeds and pulls are 30,000 lbs at bare drum (stall), 26,000 lbs at 300 fet/min (mid drum) and 18,000 lbs at 350 ft/min (full drum). A Pioneer in the design and development of motorized carriages, Boman Industries maintains its commitment to high quality materials and workmanship. Circle Reader Service Card #582

Acme Manufacturing Inc

Acme Manufacturing Inc, located in Springfield, Oregon, offers a range of hydraulic slack pulling carriages designed to increase productivity and profitability. The Acme models 10, 15, 20 and 20S advance slack pulling carriage technology, the company says, with designs that combine lightweight, patented hydraulic slack pulling systems with high slack pulling capabilities and speeds in a carriage built to outperform its rivals. The Acme models 28 and 28S feature the patented Pow'R Block slack pulling system with dual tension wraps for greater line pulling without slipping. All Acme carriages can utilize intermediate supports. Circle Reader Service Card #583

Northwest Harvesters Inc

The K 701 Koller yarder distributed by Northwest Harvesters is the fastest and most powerful model the company manufactures at present. Suitable for uphill and downhill logging, it can be mounted on any carrier base and has a working range from 2,570' uphill to 1,980' downhill. Powered by a Cummins sixcylinder C Series diesel engine, it features a hydraulically raised 40' steel tower with four hydraulically controlled guyline winches, drums, separated oil motor for the skyline drum and quick release for emergencies. The skyline has a capacity of 2,050' of 1" and a line pull of 26,500 lbs, while the mainline has a capacity of 2,670' of 9/16" and a pull of 17,660 lbs. The haulback line has a capacity of 3,510' of 1/2" with a line pull of 17,660 lbs. The four guylines are 130' of 7/8" line and can be augmented with two 50' extensions. Circle Reader Service Card #584

Micron Machine Works Ltd

Micron Machine Works Ltd will be celebrating its 20th year of operation in 2001, manufacturing custom designed cable yarding and loading grapples. The Vancouver Island company also invents and manufactures super and extendible snorkels. It has added a full line of high quality swivels, scab and haulback blocks and is once again supplying Esco loading grapples in Canada. The company also rebuilds dozer boats, including reskinning and redecking cabs and hoods. Circle Reader Service Card #585

For more information on the above products, please fill in the contact information and check off the boxes that apply. When finished, please click on the Submit Form Button.

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Select any of the following for more information

Owren Yarding Systems #575
Global Forest Equipment #576
Christy Manufacturing Inc #577
Madill #578
Skylead Logging #579
Diamond Manufacturing #580
Teleforest Inc   #581
Boman Industries #582
Acme Manufacturing Inc #583
Northwest Harvesters Inc #584
Micron Machine Works Ltd #585

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This page last modified on Tuesday, February 17, 2004