558

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.


SPECIFICATIONS
Engine
Engine Model Cat C7.1 ACERT
Net Flywheel Power 239 HP
Gross Power 239 HP
Displacement 428 in³
Engine Speed - Operation 1750 r/min
Engine Speed - Travel 1800 r/min
Gross Power at 2,200 rpm 239 HP
Number of Cylinders 6


Weights
Estimated Operating Weight without Attachment: General Forestry (Reach) 85239 lb


Service Refill Capacities
Cooling System 7.9 gal (US)
Swing Drive 2.9 gal (US)
Hydraulic Tank 46.2 gal (US)
DEF Tank 12.2 gal (US)
Engine Crankcase 6.3 gal (US)
Final Drive - Each 2.9 gal (US)
Fuel Tank - CWT 261.4 gal (US)
Hydraulic System - Total 81.9 gal (US)


Hydraulic System
Auxiliary Pump - Reach with Rotate: Maximum Flow 37.2 gal/min
Auxiliary Pump - Reach with Rotate: Maximum Pressure 1499 psi
Auxiliary Pump - Reach with Rotate: Pump Drive Gear Ratio 1.28:1
Main Pumps - Maximum Flow - Both Pumps 126.8 gal/min
Main Pumps - Maximum Flow - Per Pump 63.4 gal/min
Maximum System Pressure - Heavy Lift Mode 5511 psi
Maximum System Pressure - Implements 5076 psi
Maximum System Pressure - Swing 4641 psi
Maximum System Pressure - Travel 5076 psi


Operating Specifications
Maximum Drawbar Pull 72164 lbf
Maximum Speed - Rabbit 2.3 mile/h
Maximum Speed - Turtle 1.5 mile/h
Maximum Swing Speed (GF) 7.5 r/min
Swing Torque (GF) 74494 ft·lbf


Undercarriage
Ground Clearance 29.5 in
Track Gauge 115 in
Track Length 199.7 in
Undercarriage Pitch 8.5 in


Dimensions - General Forestry - Boom Stretched Out
Boom Height 146.5 in
Distance Between Idler and Sprocket Centerline 158.2 in
Ground Clearance 29.5 in
Height of Tilted Side Entry Cab 137.7 in
Overall Height 164.5 in
Overall Length (Reach) 499.2 in
Tail Swing Radius 143.8 in
Track Gauge 115 in
Track Length 199.7 in
Width - With 700 mm (28 in) Shoes 142.6 in


BENEFITS & FEATURES
Performance


  • Cat 178 kW (239 hp) C7.1 ACERT™ Tier 4 Final engine with increased horsepower maintains maximum performance under load
  • Strong hydraulic horsepower for efficient implement performance and greater productivity
  • An increase in swing torque of 17 percent on General Forestry models, provides added power to move trees, which enables more efficiency and productivity
  • Heavy lift mode features increased lift capacity to handle larger payloads with improved control
  • 989 L (261 gal) counterweight fuel tank for extended machine operation and maximum uptime
  • Machine width and track length designed for stability in varied logging applications

Efficiency


  • Engine, hydraulics, and work tool integration are optimized to minimize power losses and increase overall machine efficiency
  • Steady state high idle speed and U.S. EPA Tier 4 Final technology reduce fuel consumption
  • Larger hydraulic pump allows engine to operate at lower rpms with increased performance to maximize efficiency
  • Component layout and back-to-back main hydraulic control valve reduce oil flow restrictions and aid in greater fuel economy
  • Machine designed for integration and optimization with Cat grapples
  • Powerful, multi-functioning hydraulics, combined with strong machine performance ensure work tools function quickly and smoothly to complete work faster

Application Versatility


  • Boom arrangements and hydraulic systems for specific applications enable more effective road building, loading, processing, shoveling, or millyard stacking
  • New track option meets shovel logging application requirements
  • Purpose built processor cab option that includes 19 mm (0.75 in) front windows

Reliability and Durability


  • Variable pitch, reversing cooling fan maintains optimum fluid temperature in heavy duty forestry applications
  • Cooling capacity increased 33 percent for trouble-free operation
  • Purpose built upper frame, high-wide carbody, robust linkage configurations, and heavy-duty enclosures are reinforced with thick doubler plates, extra gussets, and other reinforcements for structural integrity in severe applications
  • Large, 216 mm (8.5 in) pitch (349 HEX), grease lubricated tracks, provide excellent life in variable forestry working conditions
  • Validated and proven excavator technologies ensure overall machine reliability

Serviceability


  • One-piece engine hood design, with two opening angles, allows easy access to engine and cooling compartments
  • Side-by-side engine and hydraulic coolers are easy to access for cleaning, while reduced cooling fins per inch allows better debris flow-through and reduced clogging potential
  • 0.71 m3 (25 ft3) of storage space at ground level, provides ready access to tools, equipment, and supplies that operators use daily

Operator Comfort and Technology


  • Premium fit and finishes to maximize operator experience
  • Fully adjustable, air ride cab seat that includes heating and cooling capability for comfort and reduced operator fatigue
  • LED lights increase visibility
  • Rear entry cab option provides safe access through a fully lit platform through the use of a key FOB
  • Rear entry cab window design improves visibility for shovel logging and other applications
  • Rear entry cab includes a new innovative cab lock down system that minimizes transport time and improves uptime
  • Tool control as standard equipment for swapping and selecting tools quickly and efficiently
  • Cat Product Link™ allows for remote location of a machine and enables tracking of fuel consumption and other events


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