The Cat® FM528 handles clearing, mulching, and timber with stability and comfort. VisionLink™ and Cat forestry tools boost uptime, backed by dealer service and parts support.
| Engine Model | Cat C4.4 |
| Net Power – ISO 9249 | 170 hp |
| Engine Power – ISO 14396 | 173 hp |
| Engine Model | Cat C4.4 |
| Net Power – ISO 9249 | 170 hp |
| Engine Power – ISO 14396 | 173 hp |
| Net Power – ISO 9249 (DIN) | 173 hp (metric) |
| Engine Power – ISO 14396 (DIN) | 175 hp (metric) |
| Bore | 4 in |
| Stroke | 5 in |
| Displacement | 269 in³ |
| Biodiesel Capability | B20¹ |
| Emissions | Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 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 |
| 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% |
| Maximum Travel Speed | 3.5 mile/h |
| Maximum Drawbar Pull | 45187 lbf |
| Main System – Maximum Flow | 113 gpm |
| Maximum Pressure – Equipment | 5076 psi |
| Maximum Pressure – Equipment – Lift Mode | 5511 psi |
| Maximum Pressure – Travel | 5076 psi |
| Maximum Pressure – Swing | 3989 psi |
| Swing Speed | 11 r/min |
| Maximum Swing Torque | 60480 lbf·ft |
| General Forestry | 59700 lb |
| Note (1) | High long undercarriage (High LC), 165 mm (6.5″) fixed riser side entry cab (SEC) 5.7 m (18’7″) reach boom, R3.7 m (12’2”) drop nose stick, 700 mm (28”) double grouser (DG) shoes, no processor head |
| Log Loader (U/U) | 63300 lb |
| Note (2) | High LC, 1219 mm (48″) tilting riser SEC, 5.9 m (19’6”) straight boom, 3.5m (11’6″) u/u stick with live heel, 700mm (28″) double grouser (DG) shoes, no grapple |
| Forestry Road Builder | 62170 lb |
| Note (3) | High LC, 165 mm (6.5”) fixed riser SEC, 5.7 m (18’7″) reach boom, R2.9 (9’7″) thumb ready stick, 700mm (28″) double grouser shoes, 1.2 m³ (1.6 yd³) HD bucket. |
| Log Loader (MH Stick) | 63050 lb |
| Note (4) | High LC, 1219 mm (48″) tilting riser SEC, 5.9 m (19’6”) Straight boom, 5.8 m (19′) drop nose log loader stick, 700mm (28″) double grouser shoes, no grapple |
| Fuel Tank | 91.1 gal (US) |
| Cooling System | 6.6 gal (US) |
| Engine Oil | 4 gal (US) |
| Swing Drive | 1.3 gal (US) |
| Final Drive – Each | 1.3 gal (US) |
| Hydraulic System – Including Tank | 65.6 gal (US) |
| Hydraulic Tank | 34.1 gal (US) |
| DEF Tank | 6.9 gal (US) |
| Note (1) | General Forestry configuration with High LC, SEC with 165 mm (6.5″) fixed riser, 5.7 m (18’7″) Reach boom, 2.8 m (9’7″) Thumb ready stick, 700 mm (28″) double grouser (DG) shoes |
| Shipping Height – Tilted Cab | 11.3 ft |
| Handrail Height | 9.8 ft |
| Length: General Forestry – Boom Stretched Out | 38.3 ft |
| Length: Log Loader – Boom Stretched Out | 44.1 ft |
| Tail Swing Radius | 9.3 ft |
| Counterweight Clearance | 3.4 ft |
| Ground Clearance for Standard Undercarriage | 1.4 ft |
| Ground Clearance for High Undercarriage | 2 ft |
| Track Length | 14.7 ft |
| Track Length to Center of Rollers | 11.9 ft |
| Track Gauge | 7.8 ft |
| Transport Width | 11 ft |
| Max Reach at Stick Nose at Ground Level – General Forestry Road Builder | 32.3 ft |
| Max Reach at Grapple Mount on Heel at Ground Level – Log Loader Under/Under | 36 ft |
| Max Reach at Stick Nose at Ground Level – General Forestry Processor | 29.1 ft |
| Max Reach at Stick Nose at Ground Level – Log Loader MH Stick | 38.1 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 as a CO2 equivalent of 3.003/ |
| Standard and optional equipment may vary. Consult your Cat dealer for details. |
| ROPS Forestry cab with polycarbonate windows |
| 4-point harness seat belt |
| Heated and cooled seat with air-adjustable suspension |
| Integrated joysticks |
| Tilt-up left-side console |
| Bluetooth® integrated radio (including USB, aux port and microphone) |
| 12V DC outlets |
| Keyless push-to-start engine control |
| Automatic bi-level air conditioner |
| LED dome and floor lights |
| Windshield wiper and washer |
| Behind seat storage |
| VisionLink™ |
| Remote Flash |
| Remote Troubleshoot |
| Maintenance-free 1000 CCA batteries (x4) |
| Centralized electrical disconnect switch |
| 200-amp alternator |
| 24-volt electric starting |
| Pre-start monitoring system |
| Horn and travel alarm |
| Tool control software |
| Secondary engine shut off switch |
| Electric fuel priming pump |
| Three selectable modes: Power, Smart, Eco |
| Automatic engine speed control |
| Automatic engine idle shutdown |
| Up to 4600m (15,092 ft) altitude capability |
| 48° C (118° F) high-ambient cooling capacity |
| -32° C (-25° F) cold start capability |
| Hydraulic reverse fan |
| Two-stage fuel filter system |
| Double element air filter with integrated pre-cleaner |
| Boom and stick regeneration circuits |
| Boom and stick drift reduction valve |
| Electronic main control valve |
| Automatic hydraulic oil warm up |
| Automatic swing parking brake |
| High performance hydraulic return filter |
| Automatic two speed travel |
| Bio hydraulic oil capability |
| Swing cushion valve |
| Tool control software |
| Tandem type electronic main pump |
| Fully pressurized hydraulic system |
| Caterpillar One Key security system |
| Lockable service doors |
| Lockable fuel cap and hydraulic tank |
| Right-hand rail and hand hold |
| Signaling/warning horn |
| Ground-level secondary engine shutoff switch |
| Reaview camera |
| Hydraulic lock out lever |
| Side-entry service platform |
| Grouped location for engine oil and fuel filters |
| Ground level dipstick for engine oil |
| Scheduled Oil Sampling (S·O·S℠) ports |
| Tie down points |
| Heavy-duty travel motor guards |
| Heavy-duty bottom guards |
| Full length track guiding guards |
| Heavy-duty recoil springs |
| Heavy-duty hydraulic swivel guard |
| Straddle mounted carrier rollers |
| Standard and optional equipment may vary. Consult your Cat dealer for details. |
| 5.7 m (18'7") Reach boom |
| 5.9 m (19'6") Straight boom |
| 2.9 m (9'6") Thumb-ready stick |
| 3.7 m (12'2") Drop Nose stick |
| 3.5 m (11'6") Under/Under stick |
| 3.8 m (12'6") Over/Under stick |
| 5.8 m (19'2") MH stick |
| Side entry with 165 mm (6.5") fixed riser |
| Side entry 1219 mm (48") tilting riser |
| High-resolution touchscreen monitor 203 mm (8") |
| High-resolution touchscreen monitor 254 mm (10") |
| CB radio mounts |
| Rear sunshade |
| Premium lighting – General Forestry – 6 additional LED lights |
| Premium lighting – Log Loader – 10 additional LED lights |
| Cold start package with block heaters and ether assist |
| Medium pressure circuit |
| Storage tray in pump room |
| Right-hand sideview camera |
| Severe Duty – Long undercarriage |
| High – Long undercarriage (with 7.5" pitch) |
| Catwalks |
| 600 mm (24 in) Double grouser shoes, for High-LC (D5 type link) |
| 700 mm (28 in) Triple and Double grouser shoes, for High-LC (D5 type link) |
| 700 mm (28 in) Triple and Double grouser shoes, for SD-LC (326 track link) |
| 760 mm (30 in) Triple grouser shoes, for High-LC (D5 type link) |
| 2980 mm (9'9") blade |
| 3170 mm (10'5") blade |
