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
+ -| Engine Model | Cat C7.1 |
| Net Flywheel Power | 239HP |
| Gross Power | 239HP |
| Displacement | 428in³ |
| Engine Speed - Operation | 1750r/min |
| Engine Speed - Travel | 1800r/min |
| Gross Power at 2,200 rpm | 239HP |
| Number of Cylinders | 6 |
Service Refill Capacities
+ -| Cooling System | 7.9gal (US) |
| Swing Drive | 2.9gal (US) |
| Hydraulic Tank | 46.2gal (US) |
| Fuel Tank - CWT | 261.4gal (US) |
| Hydraulic System - Total | 81.9gal (US) |
| DEF Tank | 12.2gal (US) |
| Engine Crankcase | 6.3gal (US) |
| Final Drive - Each | 2.9gal (US) |
Operating Specifications
+ -| Maximum Speed - Turtle | 1.5mile/h |
| Maximum Speed - Rabbit | 2.3mile/h |
| Maximum Drawbar Pull | 72164lbf |
| Maximum Swing Speed (GF) | 7.5r/min |
| Swing Torque (GF) | 74494ft·lbf |
Hydraulic System
+ -| Main Pumps - Maximum Flow - Per Pump | 63.4gal/min |
| Main Pumps - Maximum Flow - Both Pumps | 126.8gal/min |
| Maximum System Pressure - Implements | 5076psi |
| Maximum System Pressure - Travel | 5076psi |
| Maximum System Pressure - Swing | 4641psi |
| Maximum System Pressure - Heavy Lift Mode | 5511psi |
| Auxiliary Pump - Reach with Rotate: Maximum Flow | 37.2gal/min |
| Auxiliary Pump - Reach with Rotate: Maximum Pressure | 1499psi |
| Auxiliary Pump - Reach with Rotate: Pump Drive Gear Ratio | 1.28:1 |
Undercarriage
+ -| Undercarriage Pitch | 8.5in |
| Ground Clearance | 29.5in |
| Track Gauge | 115in |
| Track Length | 199.7in |
Weights
+ -| Estimated Operating Weight without Attachment: General Forestry (Reach) | 85239lb |
Dimensions - General Forestry - Boom Stretched Out
+ -| Boom Height | 146.5in |
| Distance Between Idler and Sprocket Centerline | 158.2in |
| Ground Clearance | 29.5in |
| Height of Tilted Side Entry Cab | 137.7in |
| Overall Height | 164.5in |
| Overall Length (Reach) | 499.2in |
| Tail Swing Radius | 143.8in |
| Track Gauge | 115in |
| Track Length | 199.7in |
| Width - With 700 mm (28 in) Shoes | 142.6in |
