Cat Forest Machines 558

Cat Forest Machines 558

Engine Power/Speed 178.0 kW
Overall Weight 38664.0 kg
Torque 101.0 kN·m
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Overview

The 558 features enhanced performance coupled with ultimate machine efficiency. Cat® components, purpose built upper and lower frames, and application specific linkage configurations increase machine up time and lower machine operating costs.

Engine

Units:

Engine ModelCat C7.1 ACERT | Cat C7.1 ACERT
Net Flywheel Power239.0 HP | 178.0 kW
Gross Power239.0 HP | 178.0 kW
Displacement428.0 in³ | 7.01 l
Engine Speed - Operation1750.0 r/min | 1750.0 r/min
Engine Speed - Travel1800.0 r/min | 1800.0 r/min
Gross Power at 2,200 rpm239.0 HP | 178.0 kW
Number of Cylinders6 | 6

Weights

Estimated Operating Weight without Attachment: General Forestry (Reach)85239.0 lb | 38664.0 kg

Service Refill Capacities

Cooling System7.9 gal (US) | 30.0 l
Swing Drive2.9 gal (US) | 11.0 l
Hydraulic Tank46.2 gal (US) | 175.0 l
DEF Tank12.2 gal (US) | 46.0 l
Engine Crankcase6.3 gal (US) | 24.0 l
Final Drive - Each2.9 gal (US) | 11.0 l
Fuel Tank - CWT261.4 gal (US) | 989.3 l
Hydraulic System - Total81.9 gal (US) | 310.0 l

Hydraulic System

Auxiliary Pump - Reach with Rotate: Maximum Flow37.2 gal/min | 141.0 l/min
Auxiliary Pump - Reach with Rotate: Maximum Pressure1499.0 psi | 10335.0 kPa
Auxiliary Pump - Reach with Rotate: Pump Drive Gear Ratio1.28:1 | 1.28:1
Main Pumps - Maximum Flow - Both Pumps126.8 gal/min | 480.0 l/min
Main Pumps - Maximum Flow - Per Pump63.4 gal/min | 240.0 l/min
Maximum System Pressure - Heavy Lift Mode5511.0 psi | 38000.0 kPa
Maximum System Pressure - Implements5076.0 psi | 35000.0 kPa
Maximum System Pressure - Swing4641.0 psi | 32000.0 kPa
Maximum System Pressure - Travel5076.0 psi | 35000.0 kPa

Operating Specifications

Maximum Drawbar Pull72164.0 lbf | 321.0 kN
Maximum Speed - Rabbit2.3 mile/h | 3.7 km/h
Maximum Speed - Turtle1.5 mile/h | 2.4 km/h
Maximum Swing Speed (GF)7.5 r/min | 7.5 r/min
Swing Torque (GF)74494.0 ft·lbf | 101.0 kN·m

Undercarriage

Ground Clearance29.5 in | 749.0 mm
Track Gauge115.0 in | 2921.0 mm
Track Length199.7 in | 5072.0 mm
Undercarriage Pitch8.5 in | 215.9 mm

Dimensions - General Forestry - Boom Stretched Out

Boom Height146.5 in | 3720.0 mm
Distance Between Idler and Sprocket Centerline158.2 in | 4019.0 mm
Ground Clearance29.5 in | 749.0 mm
Height of Tilted Side Entry Cab137.7 in | 3498.0 mm
Overall Height164.5 in | 4178.0 mm
Overall Length (Reach)499.2 in | 12680.0 mm
Tail Swing Radius143.8 in | 3653.0 mm
Track Gauge115.0 in | 2921.0 mm
Track Length199.7 in | 5072.0 mm
Width - With 700 mm (28 in) Shoes142.6 in | 3621.0 mm

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