Overview
The Cat® FM548 delivers high swing torque and smooth hydraulics for timber processing. VisionLink™ connectivity and dealer service help owners maximize uptime and productivity.
Key Features
More Comfort. More Performance. More Versatility.
Built for the Operator
Sound-suppressed Forestry ROPS cab gives wide visibility, quiet comfort, and safety in rugged timber conditions.
Ready to Work
Supports multiple processing heads, grapples, and loaders for versatile forestry and roadbuilding tasks.
Economical Maintenance
Long-life filters and simplified maintenance extend uptime. Dealer support keeps you productive year-round.
Specifications
| Engine Model | Cat C7.1 |
|---|---|
| Net Power - ISO 9249 | 271 hp |
| Engine Power - ISO 14396 | 275 hp |
| Net Power - ISO 9249 (DIN) | 275 hp (metric) |
| Engine Power - ISO 14396 (DIN) | 279 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 Travel Speed | 3 mile/h |
|---|---|
| Maximum Drawbar Pull | 66319 lbf |
| Main System - Maximum Flow | 132.6 gpm |
|---|---|
| Maximum Pressure - Equipment | 5076 psi |
| Maximum Pressure - Equipment - Lift Mode | 5511 psi |
| Maximum Pressure - Travel | 5076 psi |
| Maximum Pressure - Swing | 4061 psi |
| Swing Speed | 8.1 r/min |
|---|---|
| Maximum Swing Torque | 100308 lbf·ft |
| General Forestry | 83300 lb |
|---|---|
| Note (1) | 558 mm (22") Side Entry Cab (SEC) Riser, High Wide undercarriage, Reach boom, R2.95 m (9'8") Reach stick, 700 mm (28") double grouser shoes, no bucket. |
| Log Loader (U/U) | 89290 lb |
| Note (2) | 1219 mm (48") Rear Entry Cab (REC) Riser, High Wide undercarriage, Log Loader boom, 3.76 m (12'4") Under/Under stick with live heel, 700 mm (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) |
| Note (1) | General Forestry |
|---|---|
| Shipping Height - Tilted Cab | 11.5 ft |
| Handrail Height | 11.5 ft |
| Length: General Forestry - Boom Stretched Out | 41.3 ft |
| Length: Log Loader - Boom Stretched Out | 49.6 ft |
| Tail Swing Radius | 11.6 ft |
| Counterweight Clearance | 4.9 ft |
| Ground Clearance | 2.5 ft |
| Track Length | 16.6 ft |
| Track Length to Center of Rollers | 13.2 ft |
| Track Gauge | 9.2 ft |
| Transport Width | 11.6 ft |
| Max Reach at Stick Nose at Ground Level - General Forestry Road Builder | 29.5 ft |
|---|---|
| Max Reach at Grapple Mount on Heel at Ground Level - Log Loader Under/Under | 33.5 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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