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559C Knuckleboom Loader

559C Knuckleboom Loader

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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.

Engine

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

Weights

Operating Weight
34100.0 lb
Operating Weight (less grapple)
34100.0 lb
Operating Weight without grapple
34100.0 lb

Operating Specifications

Knuckleboom Length
32.0 ft
Swing Speed
11.0 RPM
Maximum Reach (standard boom)
32.0 ft
Standard Knuckleboom Reach to Pin
32.0 ft
Swing Bearing Diameter (ball path)
43.5 in
Swing Torque
49173.0 lb ft
Tailswing
106.0 in

Service Refill Capacities

Hydraulic Tank
80.0 gal
Fuel Tank
100.0 gal
Cooling System
7.5 gal
Engine Oil
4.0 gal
Swing Drive
1.0 gal

Hydraulic System

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

Dimensions

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

Standards

OFPS
cab meets SAE J2267

Shipping Dimensions (mounted trailer)

Height
157.6 in
Width
101.3 in