551 Track Feller Buncher

A robust, reliable undercarriage utilizes proven components, customized for the most rugged forestry conditions. The unique boom design provides industry leading lift capacity throughout full reach range, a benefit in large timber. Three models are available with just the right horsepower, track size and hydraulic configurations to fit your application needs.

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Specifications

Engine
Gross Power	227.4 kW	305 hp
Engine Model	Cat® C9 ACERT™
Rated Power	210.3 kW	282 hp
Displacement	8.8 L	537 in3

Operating Specifications
Max Reach w/ Attachment	8.6 m	28.2 ft
Max Reach w/ Attachment (track harvester configuration)	11.3 m	37 ft
Maximum Drawbar Pull	46058 kg	101540 lb
Bare Pin Lift at Max Reach w/o Attachment	9400 kg (21,800 lb) @ 6.6 m (21.5 ft)
Bare Pin Lift at Max Reach w/o Attachment (track harvester configuration)	5000 kg (11,000 lb) @ 10.7 m (35 ft)
Bare Pin Lift at Max Reach (w/o attachment - long felling linkage)	7400 kg (16,300 lb) @ 8.2 m (27 ft)

Track
Undercarriage Size	345 HEX
Undercarriage Pitch	215.9 mm	8.5 in
Track Gauge	2591-2870 mm (102-113 in)
Track Length	4903 mm	193 in
Ground Clearance	889 mm	35 in
Tractive Effort	47174 kg	104000 lb
Number of Rollers	9 per side

Hydraulic System
Pump Size - Travel Circuit	416.4 L/min	110 gal/min
Pump Size - Boom, Implements	416.4 L/min	110 gal/min
Pump Size - Saw Motor	113.6 L/min	30 gal/min

Service Refill Capacities
Fuel Tank	1181 L	312 gal
Cooling System	61 L	16.1 gal
Engine Oil	39 L	10.3 gal
Hydraulic Tank	323 L	85.3 gal
Hydraulic System	370 L	97.7 gal
Swing Drive	10 L	2.64 gal

Weights
Operating Weight w/o Attachment	31057 kg	68468 lb
Operating Weight w/o Attachment (track harvester configuration)	31377 kg	69175 lb
Operating Weight w/o Attachment (track harvester configuration - long felling linkage)	35988 kg	79339 lb

Dimensions
Shipping length with attachment	11709 mm	461 in
Shipping length w/o attachment	9423 mm	371 in
Height	3658 mm	144 in
Width 1	3327 mm	131 in
Width 2	3607 mm	142 in

Dimensions - Track Harvester Configuration
Shipping length w/o attachment	13614 mm	536 in
Height w/o attachment	3658 mm	144 in
Width 1 w/o attachment	3327 mm	131 in
Width 2 w/o attachment	3607 mm	142 in

Features

Low Exhaust Emissions	The Cat C9 ACERT engine is a low emission engine designed to meet US EPA off-road Tier 2 emission regulations.
Boom and Stick	Designed for maximum reach and lift capacity.
Hydraulic Packages	Powerful hydraulic system combined with a powerful boom and stick maximize productivity in any felling or harvesting job.
Operator Comfort	The interior layout maximizes operator space, provides exceptional comfort and reduces operator fatigue.
Leveling System	Tilting mechanism provides stability and comfort in steep slope conditions.
Undercarriage	High quality custom engineered, heavy duty forestry undercarriage.
Versatility	Caterpillar® disc saw attachments are available to meet felling needs.
Tilt	All models are available with a standard 40 degree partial lateral tilt, or an optional 220 degree full lateral tilt.
Owning and Operating Costs	Cat® 500 Series Track Feller Bunchers and Track Harvesters provide the best value for your operation.
Powertrain	Built for power, reliability, low maintenance, excellent fuel economy and low emissions.
Service	The clamshell engine compartment provides easy access to oil filters, oil dipstick, hydraulic fill pump and hoses reducing maintenance time.
Powerful Performance	The Cat® C9 electronically controlled ACERT delivers power while meeting all current Tier 2 emission standards. All models contain a fuel/water separator, engine air intake heater and a dual-stage combination air cleaner with pre-cleaner.
High Capacity Cooling System	The side-by-side radiator/oil cooler gives excellent cooling capacity for high production bunching and harvesting. On-demand Flexxaire™ fan activates only when required and allows the cooling fan to purge debris from the radiator area, keeping a cleaner cooling system. The IQAN control system infinitely controls blade pitch angle to reduce horsepower demand from the cooling package, and lower operating costs.
Engine Oil	Caterpillar engine oil is formulated to optimize engine life and performance and is recommended for use in Cat diesel engines. The engine oil change interval has been increased to 500 hours.
Electric Hydraulic Oil Fill Pump	The hydraulic oil site gauge provides easy visibility to know when hydraulic oil needs to be added. An easy accessible service wand allows hydraulic oil to be pumped through the hydraulic filtering system and into the tank. This reduces maintenance down time and helps to maintain oil cleanliness requirements.
Variable Displacement Pump	All Cat® 500 series FTS Track Feller Bunchers are equipped with 200 cc variable displacement pump for travel, a 200 cc boom and implement functions, and a dedicated 55 cc variable displacement pump for felling attachments. Optional hydraulics for dangle harvesting or processor heads and intermittent saw heads are available for all models.
Heading	With up to 21,800 lbs (9400 kg) of bare pin lift capacity at 21.5' (6.6 m) on the 552 track feller buncher (with the standard linkage), the 500 series machines are dominant over competitors in their size classes. With market leading lift capacity, 28.8' (8.6 m) of reach, and tight stick tuck-in capabilities, these machines deliver high performance felling in all applications. The 552 track harvester delivers the same high performance with 12,500 lbs (5700 kg) of bare pin lift capacity an
Attachments	From plantation thinning to select cut of large diameter wood, Cat felling attachments provide reliable productive felling solutions. These range in cut capacity from 22" to 24". Designed to allow maximum visibility of the cutting area, all saws utilize high pressure hydraulics for fast saw recovery and quick arm speed. This provides a positive impact on production and better tree control.

Equipment

Standard	ELECTRICAL
Standard	24-volt electrical system
Standard	Twin hydraulically actuated hinged engine enclosure with warning alarm
Standard	OPS/FOPS/ROPS cab
Standard	TRACK SYSTEMS
Standard	C9 ACERT engine meets Tier 2 emissions requirements
Standard	- Aluminum core ATAAC and side-by-side radiator and oil cooler
Standard	Track roller guards with access holes
Standard	Dedicated fixed displacement pilot pump
Standard	50% concentration extended life coolant
Standard	Vandalism protection
Optional	24" SG pads, clipped corners, with mud/snow reliefs
Optional	CD Player with AM/FM Stereo - remote capable
Optional	Starting Aid, Cold Weather
Optional	Starting Aid, Arctic - includes engine and hydraulic heaters
Optional	Skylight, peaked, removable
Optional	28" SG pads, clipped corners, with mud/snow reliefs
Standard	Spare hose storage area
Standard	Dedicated variable displacement pumps for track and implement functions
Standard	Hydraulic track adjusters
Standard	- Removable debris screen
Standard	Infinitely variable travel speed
Standard	GUARDS
Standard	FIELD INSTALLED ATTACHMENTS
Standard	Dual joystick control
Standard	Engine fan guard
Standard	2-12 volt maintenance free batteries
Standard	95 Amp alternator
Standard	Bottom guards
Standard	Reverse slope windshield
Standard	OPERATOR ENVIRONMENT
Standard	Under hood centrifugal precleaner and primary air filter
Standard	- Swing out A/C condenser
Standard	Double flange bottom rollers
Standard	30 gpm variable displacement saw pump
Standard	OTHER EQUIPMENT
Standard	Grease gun bracket and storage area
Optional	Star Carrier Rollers
Optional	Loose Linkage Arrangements
Standard	Flexxaire™ Fan
Standard	POWER TRAIN
Standard	Cat 325C swing drive and swing motor
Standard	Caterpillar 330 HEX bolted, non-leveling carbody, variable gauge
Standard	- 43°C ambient temperature capable
Standard	Heavy-duty cooling package
Standard	Air ride seat
Standard	Isolation mounted cab and engine
Standard	IQAN programmable controls
Standard	MDL large screen display
Standard	Heavy-duty radiator guard door
Standard	Skylight - alternate escape hatch
Standard	Electric fuel priming pump
Standard	UNDERCARRIAGE
Standard	Caterpillar 345 undercarriage bolted, variable gauge non-leveling carbody, GFT110 final drives
Standard	Electric hydraulic oil fill pump
Standard	Fuel water separator
Standard	312 gal fuel tank
Standard	84 gal hydraulic tank
Standard	HYDRAULICS
Standard	Top escape hatch
Standard	3-inch retractable seat belt
Standard	ANTIFREEZE
Standard	OTHER
Standard	Heater / air conditioner with climate control
Standard	DIN mount radio ready with speakers
Standard	Operator sound suppression to standards
Standard	Travel alarm
Standard	Cup holders (2)
Standard	2-12 V and 1-24 V power outlets
Standard	Front window, 1.25 in thick margard

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