Komatsu FG25C-11 Specifications
The Komatsu FG25C-11 is a 2.5-ton (2,500 kg / 5,500 lb)
LPG/petrol-powered cushion-tire forklift engineered for intensive indoor
warehouse, production-line, packaging, and distribution operations. As part of
Komatsu’s highly regarded -11 Series, the FG25C-11 offers durable construction,
excellent maneuverability, dependable power delivery, and low maintenance cost.
The cushion-tire configuration provides compact
size, tight turning radius, smooth rolling, and precise handling on
polished or paved surfaces. The forklift is powered by the
well-established Nissan H20 industrial engine - a 2.0-liter, naturally
aspirated spark-ignition engine used across numerous material-handling
platforms for decades.
Known for simple mechanics, long service life,
excellent cold-start capability, and strong low-RPM torque, the H20
makes the FG25C-11 a fleet-standard machine. Combined with a
torque-converter powershift Transmission, hydrostatic steering, and a
reliable hydraulic system, the FG25C-11 provides predictable operation
with outstanding operator visibility and ease of service.
Technical Data:
- Model: Nissan H20
- Type: inline 4-cylinder, 4-stroke, spark-ignition
- Displacement: approx. 1.974 L (1,974 cc)
- Bore/stroke: 83x80 mm (3.27x3.15 in)
- Rated power: approx. 33-38 kW (44-51 hp) @ 2,400-2,600 rpm
- Peak torque: approx. 140-155 Nm (103-114 lb-ft) @ 1,600-1,800 rpm
- Fuel type: LPG or gasoline
- Fuel system: carburetor or LPG mixer
- Aspiration: naturally aspirated
- Idle speed: 650-750 rpm
- Characteristics: durable, smooth-running, easy to maintain, widely supported.
Lubrication System:
- System type: wet-sump, full-pressure
- Oil pump: gear-type
- Oil capacity: 3.5-4.5 L (3.7-4.7 qt)
- Operating oil pressure: 250-400 kPa (36-58 psi)
- Recommended oil: SAE 10W-30 or 15W-40
- Filtration: spin-on full-flow filter
Cooling System:
- Cooling type: liquid-cooled
- Coolant capacity: 7-9 L (7.4-9.5 qt)
- Thermostat opening: 82°C (180°F)
- Fully open: 95°C (203°F)
- Radiator: fin-tube industrial
- Fan: mechanical belt-driven
- Water pump: centrifugal
- System pressure: 88-108 kPa (13-16 psi)
Transmission:
- Type: torque-converter powershift
- Gear selection: 1-2 forward / 1-2 reverse
- Directional control: mechanical or hydraulic shuttle
- Travel speed (unladen): 17-19 km/h (10.5-11.8 mph)
- Travel speed (laden): 15-17 km/h (9.3-10.5 mph)
- Transmission capacity: 7-10 L (7.4-10.5 qt)
- Fluid: Dexron II/III ATF
- Cooling: Transmission oil-cooler integrated with radiator
Front Drive Axle:
- Rigid steel axle
- Differential: bevel-gear
- Oil capacity: 4-5 L (4.2-5.3 qt)
- Lubricant: SAE 80W-90
Rear Steer Axle:
- Type: oscillating center-pivot
- Oscillation: ±8-10 degrees
- Capacity: 0.8-1.2 L
Braking System:
- Service brakes: hydraulic drum
- Parking brake: mechanical hand-lever
- Notes: predictable modulation for smooth indoor braking
- Voltage: 12 V
- Battery: 65-90 Ah
- Alternator: 35-55 A
- Starter: 1.5-2.2 kW
- Harness: sealed connectors, abrasion-resistant routing
- Indicators: oil pressure, coolant temperature, charge, LPG level, hour meter,
parking brake
Drive layout:
- Drive wheels: front
- Steering wheels: rear
- Drive type: 2WD (cushion tire)
Tire Sizes:
- Front: 21x7-15
- Rear: 16x6-10.5
- Options: non-marking tires, smooth indoor compounds
Chassis Construction:
- Fully welded steel frame
- Reinforced overhead guard
- Compact counterweight
- Anti-slip entry steps
- Protected hydraulic and electrical routing
- Rubber-mounted powertrain
Steering:
- Steering type: fully hydrostatic
- Pump flow: 5-10 L/min (1.3-2.6 gpm)
- Cylinder: double-acting
- Turning radius: 1.9-2.1 m (75-83 in)
- Rear axle: oscillating type for improved traction
- Pump type: engine-driven external gear pump
- Flow output: 40-60 L/min (10-16 gpm)
- Maximum pressure: 16-18 MPa (2,320-2,610 psi)
- Hydraulic reservoir: 25-32 L (26-34 qt)
- Oil: ISO VG 32 or VG 46
Cylinders:
- dual lift cylinders (double-acting)
- dual tilt cylinders (cushioned)
- Valve control: proportional spool valve (manual)
| Service Refill Capacities |
- Engine oil: 3.5-4.5 L
- Coolant: 7-9 L
- Transmission: 7-10 L
- Drive axle: 4-5 L
- Steer axle: 0.8-1.2 L
- Hydraulic tank: 25-32 L
Mast types:
- Simplex (1-stage)
- Duplex (2-stage)
- Triplex (3-stage, full free-lift)
Lift height options:
- Simplex: 2.5-3.5 m
- Duplex: 3.0-4.5 m
- Triplex: 4.5-6.0 m
Fork specifications:
- Standard fork lengths: 1,070 mm (42 in), 1,220 mm (48 in)
- Optional: 914-1,829 mm (36-72 in)
- Fork width: 100-125 mm
- Fork thickness: 35-45 mm
- Fork class: ITA Class II or III
- Rated capacity: 2,500 kg (5,500 lb)
- Load center: 500 mm (20 in)
Capacity derating occurs with:
- long forks
- tall masts
- heavy attachments
- side-shifting
- uneven loading or slopes
- Lift speed (unladen): 0.45-0.60 m/s
- Lift speed (laden): 0.25-0.40 m/s
- Lowering speed: 100-150 ft/min
- Gradeability (unladen): 16-22%
- Gradeability (laden): 10-16%
- Drawbar pull: 9,000-12,000 N (2,020-2,700 lbf)
- Length to fork face: 2.40-2.55 m (94-100 in)
- Width: 1.08-1.15 m (42-45 in)
- Overhead guard height: 2.05-2.15 m (81-85 in)
- Wheelbase: 1.50-1.55 m (59-61 in)
- Ground clearance: 90-120 mm (3.5-4.7 in)
- Carriage width: 1,000-1,100 mm (39-43 in)
- Free lift: 70-800 mm (3-32 in)
- Turning radius: 1.9-2.1 m
- Aisle width (1000x1200 pallet): 3.2-3.5 m
- Maximum fork height: 2.5-6.0 m
- Supported forks: 36-72 in
- Operating weight: 3,300-3,900 kg (7,275-8,600 lb)
- Counterweight: 1,500-1,900 kg (3,300-4,200 lb)
250-hour:
- Replace oil and filter
- Lubricate steer axle and mast
- Clean radiator
500-hour:
- Replace Transmission oil
- Inspect driveline and axle seals
- Clean hydraulic suction strainer
1,000-hour:
- Hydraulic oil and filter replacement
- Replace coolant
- Inspect cylinders, hoses, wiring
2,000-hour:
- Full drivetrain inspection
- Steering alignment
- Mast structural inspection
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