Overview
The Cat® FM558 excels in shovel logging with stability, comfort, and strong hydraulics. Cat forestry tools, VisionLink™ monitoring, and dealer support keep operations profitable.
Key Features
More Comfort. More Performance. More Versatility.
Maximum Power for Multiple Configurations
High swing torque and lift capacity power through logging, loading, and processing.
Engineered for Operator Safety
Certified Forestry ROPS cab with reinforced guards and clear sightlines keeps you safe in demanding woods work.
Low Owning and Operating Costs
Extended service intervals and Cat dealer support maximize uptime while lowering costs.
Specifications
| Engine Model | Cat C7.1 |
|---|---|
| Net Power - ISO 9249 | 298 hp |
| Engine Power - ISO 14396 | 302 hp |
| Net Power - ISO 9249 (DIN) | 303 hp (metric) |
| Engine Power - ISO 14396 (DIN) | 306 hp (metric) |
| Bore | 4.13 in |
| Stroke | 5.31 in |
| Displacement | 433.3 in³ |
| Biodiesel Capability | B20¹ |
| Emissions | Meets U.S. EPA Tier 4 Final, EU Stage V emission standards. |
| Note (1) | Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at time of manufacture. |
| Note (2) | ¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)*** 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. *While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. *** Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). |
| Maximum Drawbar Pull | 78638 lbf |
|---|---|
| Maximum Travel Speed | 2.8 mile/h |
| Main System - Maximum Flow | 141 gpm |
|---|---|
| Maximum Pressure - Equipment | 5076 psi |
| Maximum Pressure - Equipment - Lift Mode | 5511 psi |
| Maximum Pressure - Travel | 5076 psi |
| Maximum Pressure - Swing | 3945 psi |
| Swing Speed | 7.4 r/min |
|---|---|
| Maximum Swing Torque | 113584 lbf·ft |
| General Forestry | 91490 lb |
|---|---|
| Note (1) | 22" SEC Riser, High Wide undercarriage, 5.04mt CTWT, Reach Boom, R3.2 m (10'2") Reach stick, 700mm (28") double grouser shoes, 1.76 m³ (2.30 yd³) HD bucket. |
| Log Loader (U/U) | 98550 lb |
| Note (2) | 72" REC Riser, High Wide undercarriage, Log Loader boom, 4.05 m (13'3") Under/Under stick with live heel, 700mm (28") double grouser shoes, no grapple. |
| Fuel Tank | 262 gal (US) |
|---|---|
| Cooling System | 10 gal (US) |
| Engine Oil | 7 gal (US) |
| Swing Drive | 4 gal (US) |
| Final Drive - Each | 3 gal (US) |
| Hydraulic System - Including Tank | 92 gal (US) |
| Hydraulic Tank | 49 gal (US) |
| DEF Tank | 11 gal (US) |
| Max Reach at Grapple Mount on Heel at Ground Level - Log Loader Under/Under | 39.3 ft |
|---|---|
| Max Reach at Stick Nose at Ground Level - General Forestry Road Builder | 35.3 ft |
| Note (1) | General Forestry |
|---|---|
| Length: General Forestry - Boom Stretched Out | 46.2 ft |
| Length: Log Loader - Boom Stretched Out | 51.6 ft |
| Track Gauge | 9.6 ft |
| Shipping Height - Tilted Cab | 11.9 ft |
| Track Length | 16.9 ft |
| Track Length to Center of Rollers | 13.5 ft |
| Tail Swing Radius | 11.6 ft |
| Transport Width | 12 ft |
| Counterweight Clearance | 4.9 ft |
| Handrail Height | 11.6 ft |
| Ground Clearance | 2.5 ft |
| Note (1) | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 2.1 (22" Riser CAB)/2.2 (48"/72" Riser CAB) kg of refrigerant, which has a CO2 equivalent of 3.003/3.146 metric tonnes. |
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