559C Knuckleboom Loader

559C Knuckleboom Loader

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.

Gross Power
174.0 hp
Knuckleboom Length
32.0 ft
Operating Weight
34100.0 lb
Engine Model
Cat® C6.6 ACERT™ Tier 4 Interim

Engine

Gross Power
174.0hp
Engine Model
Cat® C6.6 ACERT™ Tier 4 Interim
Gross Power @ 1,800 rpm
174.0hp
Gross Power
174HP
Engine Model
Cat® C6.6 ACERT™ Tier 4 Interim
Gross Power - 1,800 rpm
174HP

Operating Specifications

Knuckleboom Length
32.0ft
Swing Speed
11.0RPM
Swing Torque
49173.0lb ft
Maximum Reach - Standard Boom
32ft
Standard Knuckleboom Reach to Pin
32ft
Swing Bearing - Diameter - Ball Path
43.5in
Tail Swing
106in
Knuckleboom Length
32ft
Swing Speed
11r/min
Swing Torque
49173ft-lb

Weights

Operating Weight
34100.0lb
Operating Weight without grapple
34100.0lb
Operating Weight - Without Grapple
34100lb
Operating Weight
34100lb
Operating Weight - Less Grapple
34100lb

Hydraulic System

Cylinders - Main
two
Cylinders - Stick
one
Hydraulic Pressure - Swing
3500.0psi
Hydraulic Pressure - System
3500.0psi
Cylinders - Stabilizers
four
Hydraulic Oil Flow at 1,800 rpm
230/174 L (60/46 gal)
Cylinders - Main
two
Cylinders - Stick
one
Hydraulic Pressure - Swing
3500psi
Hydraulic Pressure - System
3500psi

Service Refill Capacities

Hydraulic Tank
80.0gal
Fuel Tank
100.0gal
Cooling System
7.5gal
Engine Oil
4.0gal
Swing Drive
1.0gal
Hydraulic Tank
80gal (US)
Fuel Tank
100gal (US)
Cooling System
7.5gal (US)
Engine Oil
4gal (US)
Swing Drive
1gal (US)

Dimensions

Height to Top of Cab
157.6in
Stabilizer Pad Size
508 × 711 mm (20 × 28 in)
Stabilizer Reach Below Grade
17in
Stabilizer Spread - Maximum Down Reach
166.8in
Stabilizer Spread - Grade
187.3in
Height - Top of Cab
157.6in

Standards

OFPS
cab meets SAE J2267

Shipping Dimensions - Mounted Trailer

Height
157.6in
Width
101.3in

Standard 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
    • 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
    • Non-suspension trailer with hydraulic landing gear
    • 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