The Cat® FM548 is simply the best choice in its size class for doing roadbuilding, processing, and log-loading work. With 275 HP and significant hydraulic flow and swing torque increases, the superior performance and exceptional operator comfort and safety of the FM548 will help you produce day in and day out.
The Certified Forestry ROPS cab is sound-suppressed and sealed. Its exceptional, unobstructed jobsite view confidently supports and secures the operator when taking on challenging tree-moving work.
This versatile machine features multiple configurations up to 23†class processing heads, heel and grapple, powerclam/butt-n-top grapple, and roadbuilding gets the job done no matter the tasks at hand.
Experience increased uptime and low maintenance costs with longer-life fuel and hydraulic oil filters. Cat® fuel filters have double the life of the previous filters, and the hydraulic oil return filter provides up to 50% more service life.
| 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 1,800 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) or ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)* or 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. *Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). **Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. |
| Maximum Travel Speed | 3 mile/h |
|---|---|
| Maximum Drawbar Pull | 66319 lbf |
| Main System - Maximum Flow | 132.6 gal/min |
|---|---|
| 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) | 22" SEC Riser, High Wide undercarriage, Reach Boom, R2.95 m (9'8") Reach stick, 700mm (28") double grouser shoes, No bucket. |
| Log Loader (U/U) | 89290 lb |
| Note (2) | 48" REC Riser, High Wide undercarriage, Log Loader boom, 3.76 m (12'4") 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) |
| 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 | 34.4 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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