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
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| Engine Model |
Cat C7.1 ACERT |
| 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
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| 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
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| 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
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| 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
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| Undercarriage Pitch |
8.5in |
| Ground Clearance |
29.5in |
| Track Gauge |
115in |
| Track Length |
199.7in |
Weights
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| Estimated Operating Weight without Attachment: General Forestry (Reach) |
85239lb |
Dimensions - General Forestry - Boom Stretched Out
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| 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 |
