521 Track Feller Buncher
A robust undercarriage utilizes proven components, customized for demanding forestry conditions. The unique boom design provides industry leading lift capacity throughout full reach range, a benefit in large timber. Four models are available with just the right horsepower, track size and hydraulic configurations to fit your application needs.
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SPECIFICATION SUMMARY
PRICE (USD)
Call 800-637-5000 for rate information
Engine
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Gross Power284.0 hp
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Engine ModelCat® C9 ACERT™
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Rated Power263.0 hp
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Displacement537.0 in3
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Gross Power284 HP
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Engine ModelCat® C9 ACERT™
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Rated Power263 HP
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Displacement537 in³
Hydraulic System
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Pump Size - Travel Circuit12.2 in3
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Pump Size - Boom, Implements11.59 in3
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Pump Size - Saw Motor3.36 in3
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Pump Size - Travel Circuit12.2 in³
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Pump Size - Boom, Implements11.59 in³
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Pump Size - Saw Motor3.36 in³
Track
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Track Gauge102.0 in
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Track Length189.0 in
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Ground Clearance33.0 in
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Undercarriage SizeD6H HD
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Undercarriage Pitch8 in
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Tractive Effort70500 lb
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Track Gauge102 in
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Track Length189 in
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Ground Clearance33 in
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Undercarriage Size126 in
Service Refill Capacities
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Fuel Tank140.0 gal
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Cooling System16.1 gal
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Engine Oil10.3 gal
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Hydraulic Tank69.2 gal
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Hydraulic System79.3 gal
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Swing Drive2.6 gal
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Pony Fuel Tank - Optional90 gal (US)
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Fuel Tank140 gal (US)
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Cooling System16.1 gal (US)
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Engine Oil10.3 gal (US)
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Hydraulic Tank69.2 gal (US)
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Hydraulic System79.3 gal (US)
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Swing Drive2.6 gal (US)
Dimensions
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Height140.0 in
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Shipping Length - With Attachment431 in
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Shipping Length - Without Attachment340 in
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Width - Minimum126 in
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Height140 in
Operating Specifications
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Maximum Reach - With Attachment26.6 ft
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Maximum Reach - With Attachment - Track Harvester Configuration32 ft
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Bare Pin Lift at Maximum Reach - Without Attachment7100 kg (15600 lb) @ 6.1 m (20 ft)
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Bare Pin Lift at Maximum Reach - Without Attachment - Track Harvester Configuration4100 kg (9100 lb) @ 9 m (29.5 ft)
Weights
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Operating Weight - Without Attachment59710 lb
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Operating Weight - Without Attachment - Track Harvester Configuration57440 lb
Dimensions - Track Harvester Configuration
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Shipping Length - Without Attachment453 in
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Height - Without Attachment140 in
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Width - Minimum - Without Attachment126 in
Powertrain
Hydraulic Packages
Operator Comfort
Leveling System
Undercarriage
Boom and Stick
Versatility
Owning and Operating Costs
Serviceability
Customer Focus
Standard Equipment:
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- Electrical
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- 24-volt electrical system
- 2-12 volt maintenance free batteries with 950 CCA
- 95 Amp alternator
- IQAN programmable controls
- MDL large display screen
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- Guards
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- Hydraulically actuated hinged engine enclosure with warning alarm
- Engine fan guard
- Bottom guards
- Isolation mounted cab and engine
- Heavy duty radiator guard door
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- Operator Environment
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- OPS/FOPS/ROPS cab
- Dual joystick control
- Reverse slope windshield
- Air ride seat
- Skylight - alternate escape hatch
- Top escape hatch
- 3 inch retractable seat belt
- Heater/air conditioner w/climate control
- DIN mount radio ready
- Operator sound suppression to standards
- Travel alarm
- Cup holders (2)
- 2-l2volt and 1-24 volt power outlets
- Front Window, 1.25 in Thick Margard
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- Powertrain
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- C9 ACERT engine meets Tier 2 emissions requirements
- Infinitely variable travel speed
- Under hood centrifugal precleaner and primary air filter
- 43C degree ambient temperature cooling package
- Electric fuel priming pump
- Fuel water separator
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- Undercariage
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- Track roller guards with access holes
- Hydraulic track adjusters
- Double flange track rollers
- GFT80 Lohmann final drives
- Caterpillar D6H HD grease lubricated and swaged undercarriage components
- Welded, non-leveling carbody
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- Other Standard Equipment
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- Vandalism protection
- Spare hose storage area
- Grease gun bracket and storage area
- 140 US gallon fuel tank
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- Hydraulics
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- Dedicated pilot pump
- Two dedicated variable displacement track pump and implement pump
- 30 gpm dedicated saw pump
- Cat® 325C swing drive and swing motor
- Electric hydraulic oil fill pump
- 70 US gal hydraulic tank
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- Antifreeze
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- 50% concentration extended life coolant
Optional Equipment:
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- Track Systems
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- 24" SG pads, clipped corners, with mud/snow reliefs
- 24" DG pads, clipped corners, with mud/snow reliefs
- 28" SG pads, clipped corners, with mud/snow reliefs
- 28" DG pads, clipped corners, with mud/snow reliefs
- 36" Tri-track, clipped corners, with mud/snow reliefs
- Star Carrier Rollers
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- Other Equipment
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- Starting Aid, Cold Weather
- Starting Aid, Arctic
- Pony Tank, additional 90 US gal (341 L) fuel capacity
- Flexxaire™ Fan
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- Field Installed Attachments
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- CD Player with AM/FM Stereo - remote capable
- Skylight, peaked, removable
- Loose Linkage Arrangements