579C Knuckleboom Loader
US
Metric
Overview
Cat knuckleboom loaders are known for superior multifunction capability, excellent visibility and heavy-duty booms and structures. Now the Cat C Series knuckleboom loaders feature a new more fuel efficient power system, an upgraded hydraulic system for greater reliability and significantly more lift at full reach than previous models. Like the smaller model, the Cat 579C, now has a right-side operator's cab with a walk-up platform and enlarged doorway for safe access to the cab.
Engine
Gross Power
174.00 hp
129.50 kW
Engine Model
Cat® C6.6 ACERT™ Tier 4 Interim
Gross Power @ 1,800 rpm
174.00 hp
129.50 kW
Operating Specifications
Knuckleboom Length
32.00 ft
9.80 m
Swing Speed
9.50 RPM
9.50 RPM
Maximum Reach - Standard Boom
32.00 ft
9.80 m
Standard Knuckleboom Reach to Pin
32.00 ft
9.80 m
Swing Bearing - Diameter - Ball Path
43.50 in
1105.00 mm
Swing Torque
73800.00 lb ft
100360.00 N·m
Tail Swing
108.20 in
2750.00 mm
Weights
Operating Weight
36480.00 lb
16582.00 kg
Counterweight
1440.00 lb
653.00 kg
Operating Weight - Without Grapple
36480.00 lb
16582.00 kg
Operating Weight without grapple
36480.00 lb
16582.00 kg
Hydraulic System
Cylinders - Main
two
Cylinders - Stick
one
Hydraulic Pressure - Swing
3500.00 psi
24131.00 kPa
Hydraulic Pressure - System
3500.00 psi
24131.00 kPa
Cylinders - Stabilizers
four
Hydraulic Oil Flow at 1,800 rpm
230/230 L (60/60 gal)
Service Refill Capacities
Hydraulic Tank
80.00 gal
302.00 L
Fuel Tank
100.00 gal
378.00 L
Cooling System
7.50 gal
29.00 L
Engine Oil
4.00 gal
15.00 L
Swing Drive
2.60 gal
10.00 L
Dimensions
Stabilizer Pad Size
508 × 711 mm (20 × 28 in)
Stabilizer Reach Below Grade
12.80 in
324.00 mm
Stabilizer Spread - Maximum Down Reach
166.80 in
4237.00 mm
Stabilizer Spread - Grade
183.80 in
4670.00 mm
Height to Top of Cab
161.90 in
4112.00 mm
Standards
OFPS
cab meets SAE J2267
Shipping Dimensions - Mounted Trailer
Height
161.90 in
4112.00 mm
Width
101.30 in
2573.00 mm
Engine
Gross Power
174.00 HP
129.50 kW
Engine Model
Cat® C6.6 ACERT™ Tier 4 Interim
Gross Power - 1,800 rpm
174.00 HP
129.50 kW
Weights
Operating Weight
36480.00 lb
16582.00 kg
Counterweight
1440.00 lb
653.00 kg
Operating Weight - Less Grapple
36480.00 lb
16582.00 kg
Operating Specifications
Knuckleboom Length
32.00 ft
9.80 m
Swing Speed
9.50 r/min
9.50 r/min
Swing Torque
73800.00 ft-lb
100360.00 N·m
Service Refill Capacities
Hydraulic Tank
80.00 gal (US)
302.00 l
Fuel Tank
100.00 gal (US)
378.00 l
Cooling System
7.50 gal (US)
29.00 l
Engine Oil
4.00 gal (US)
15.00 l
Swing Drive
2.60 gal (US)
10.00 l
Hydraulic System
Cylinders - Main
two
Cylinders - Stick
one
Hydraulic Pressure - Swing
3500.00 psi
24131.00 kPa
Hydraulic Pressure - System
3500.00 psi
24131.00 kPa
Dimensions
Height - Top of Cab
161.90 in
4112.00 mm
Features
Hydraulics
Power Train
Operator Station
Electronics
Structure and Subframe
Boom and Stick
Grapples
Delimber/Slasher Package
Owning and Operating Costs
Serviceability
Customer Support
Sustainability
Sales Features
Hydraulics
Continuous, Reliable and Responsive ControlPower Train
Exceptional Power and Fuel EfficiencyOperator Station
Comfort and Convenience to Keep People ProductiveElectronics
Durable and ReliableStructure and Subframe
Built to Work in Rugged ApplicationsBoom and Stick
Made for Heavy Lifting and Long Service LifeGrapples
Work Tool Options to Meet Your NeedsDelimber/Slasher Package
A Complete Factory Installed SystemOwning and Operating Costs
Proven Best InvestmentServiceability
Easy to Maintain. Easy to Service.Customer Support
Ready to Help. Anytime. Anywhere.Sustainability
Reducing Environmental ImpactsStandard Equipment
- ELECTRICAL
- 24V system
- Master disconnect
- Circuit breaker protection
- 95 Amp alternator
- Two (2) 12V maintenance free batteries
- Standard lighting package: - Two (2) cab mounted halogen light fixtures
- Electronic engine/machine monitoring system
- Two (2) 12V power points
- 20 circuit electric swivel
- OPERATOR ENVIRONMENT
- Cab with swing out front window guard (meets SAE J2267)
- Isolation mountings
- Dual joystick control (pilot hydraulic actuation) with foot pedal swing
- Electric stabilizer controls
- Integrated trailer landing gear control
- Pilot shut-off button
- Push button throttle control
- Reverse slope windshield
- Skylight
- Tinted safety glass
- Sunshade - dual position for front window/skylight
- High back suspension seat with lumbar support
- High capacity AC/heater system with outside air intake
- Defroster fan
- Windshield wiper/washer
- Dome light
- Horn
- Radio ready - includes speakers and AM/FM antennas
- CB Radio ready - includes mounting bracket, power and ground wires, antenna cable and antenna mount bracket
- Product Link ready
- Cup holder
- Fire extinguisher mounting bracket
- Diagnostic port
- Cell phone storage tray
- POWER TRAIN
- Cat C6.6 ACERT engine meets U.S. EPA Tier 4 Interim/EU Stage IIIB emission standards
- Electric fuel priming pump
- Air precleaner
- 2-stage air cleaner
- Enlarged cooling package with isolated cores
- 378 L (100 U.S. gal) fuel tank
- Fuel water separator
- Variable speed fan
- HYDRAULICS
- Twin 140 cm3 (8.54 in3) variable displacement pumps
- Excavator style “Negacon” system
- Bar slasher/delimber hydraulic package
- 302 L (80 U.S. gal) hydraulic tank
- Electric hydraulic oil fill pump
- STRUCTURE AND SUBFRAME
- 653 kg (1,440 lb) counterweight
- Fabricated heavy-duty, extended length center mount subframe
- Flat top subframe deck with bolt-on skid resistant fenders
- Bolt-on subframe ladder
- BOOMS AND STICKS
- 9.8 m (32 ft) reach knuckleboom
- 229 mm (9 in) grapple mounting knuckle
- ANTIFREEZE
- 50% concentration extended life coolant
Optional Equipment
- DS SYSTEMS
- Suspension trailer with hydraulic landing gear
- CTR 320 three-knife delimber
- CTR 426 four-knife delimber
- OTHER EQUIPMENT
- Cat Product Link
- AM/FM/CD/Satellite radio receiver
- Long-range front lights on cab
- Engine compartment lights
- Additional subframe ladders
- Auxiliary light package
- Slasher port adapter fittings
- Single “V” and double “VV” bolt on heels
- Single “V” extended and double “VV” extended bolt on heels
- 305 mm (12 in) grapple mounting knuckle
- Grapples