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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.

Cat Specs

Service Refill Capacities

DEF Tank
11 gal (US)
Hydraulic Tank
49 gal (US)
Hydraulic System - Including Tank
92 gal (US)
Final Drive - Each
3 gal (US)
Swing Drive
4 gal (US)
Engine Oil
7 gal (US)
Cooling System
10 gal (US)
Fuel Tank
262 gal (US)


Engine Power - ISO 14396
275 HP
Net Power - ISO 9249 (DIN)
275 hp (metric)
Engine Power - ISO 14396 (DIN)
279 hp (metric)
Meets U.S. EPA Tier 4 Final, EU Stage V emission standards.
4.13 in
5.31 in
433.3 in²
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
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 (f
Engine Model
Cat C7.1
Net Power - ISO 9249
271 HP


Maximum Travel Speed
3 mile/h
Maximum Drawbar Pull
66319 lbf

Transmission Specifications

6F Gear Ratio
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)

Hydraulic System

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 Mechanism

Swing Speed
8.1 r/min
Maximum Swing Torque
100308 lb/ft


General Forestry
83300 lb
Log Loader (U/U)
89290 lb


Ground Clearance
31 in
Note (1)
General Forestry
Tail Swing Radius
139 in
Counterweight Clearance
59 in
Track Length
199 in
Transport Width
139 in
Track Gauge
110 in