Komatsu FG25T-16 Specifications
The Komatsu FG25T-16 is a 2.5-ton (2,500 kg / 5,500 lb)
LPG/petrol pneumatic-tire forklift engineered for medium-duty indoor/outdoor
industrial operations requiring stable traction, strong lifting performance,
efficient fuel consumption, and long-term mechanical durability.
Positioned within Komatsu’s proven 16 Series,
the FG25T-16 benefits from improved hydraulic efficiency, refined
steering geometry, enhanced operator visibility, strengthened frame
rigidity, and an optimized counterweight design. Two engine
configurations were offered: Nissan K21 - a 2.1-liter industrial
spark-ignition engine known for strong reliability, quiet operation, and
low emissions.
GCT GK21 - the electronically-controlled
version of the same powerplant family, offering improved fuel
efficiency, reduced emissions, and more precise throttle response. Both
engine options deliver smooth mid-range torque, making the FG25T-16
well-suited for pallet handling, manufacturing, general logistics, food
processing, warehouse loading docks, and material-distribution yards.
Engine Options:
- Nissan K21
- GCT GK21 (EFI enhanced)
Technical Data (Common Base)
- Type: Inline 4-cyl, 4-stroke SI
- Displacement: 2.065 L (2,065 cc)
- Bore/stroke: 89x100 mm (3.50x3.94 in)
- Rated output: 37-42 kW (50-56 hp) @ 2,400-2,600 rpm
- Peak torque: 160-185 Nm (118-136 lb-ft) @ 1,600-1,800 rpm
- Fuel type: LPG or gasoline
- Fuel system: K21 - Mixer or EFI (region dependent) and GK21 - EFI (standard)
- Aspiration: Naturally aspirated
- Idle speed: 650-750 rpm
- Engine characteristics: High reliability, low vibration, smooth power
delivery.
Lubrication System
- System type: full-pressure wet-sump
- Oil capacity: 4.0-4.5 L (4.2-4.8 qt)
- Normal oil pressure: 250-400 kPa (36-58 psi)
- Recommended oil: SAE 10W-30 / 15W-40
- Filter: spin-on full-flow cartridge
- Notes: Designed for long oil-change intervals in multi-shift operations.
Cooling System
- Method: liquid-cooled
- Coolant volume: 7-9 L (7.4-9.5 qt)
- Thermostat opening: 82°C (180°F)
- Fully open temperature: 95°C (203°F)
- Radiator: heavy-duty fin-tube Construction
- Fan: engine-driven mechanical
- Water pump: belt-driven centrifugal
- System pressure: 88-108 kPa (13-16 psi)
Transmission
- Type: torque-converter powershift
- Gears: 1-2 forward / 1-2 reverse
- Direction control: mechanical lever or hydraulic shuttle
- Travel speed (unladen): 19-21 km/h (12-13 mph)
- Travel speed (laden): 17-19 km/h (10.5-11.8 mph)
- Fluid capacity: 7-9 L (7.4-9.5 qt)
- Fluid type: Dexron II/III ATF
- Cooling: integrated oil-to-air cooler
Front Drive Axle
- Construction: cast-steel heavy-duty axle
- Differential: bevel-gear
- Lubrication capacity: 4.0-5.0 L (4.2-5.3 qt)
- Lubricant: SAE 80W-90
Rear Steer Axle
- Type: oscillating center-pivot axle
- Oscillation range: ±10-12 degrees
- Lubrication volume: 0.8-1.2 L
Braking System
- Service brakes: hydraulic drums
- Parking brake: mechanical lever-operated
- Notes: predictable modulation and low maintenance.
- System voltage: 12 V
- Battery capacity: 70-100 Ah
- Alternator output:
- K21: 40-55 A
- GK21 EFI: 55-75 A
- Starter motor: 1.6-2.0 kW
- Harness: sealed connectors, abrasion-resistant wiring
- Dashboard indicators: oil pressure, coolant temperature, charging, fuel gauge,
hour meter, parking brake.
Drive layout: 2WD (front drive / rear steering)
Pneumatic Tires (T-Series)
- Front: 7.00-12 or 28x9-15
- Rear: 6.00-9
Optional: solid pneumatic, non-marking, high-traction outdoor tread
Chassis Features
- Welded steel frame
- Integrated counterweight
- Protected belly guards
- Anti-slip steps
- Reinforced overhead guard
- Rubber engine mounts reduce vibration
- Protected routing for hydraulic and electrical circuits
Steering
- Type: hydrostatic steering
- Pump output: 7-10 L/min (1.8-2.6 gpm)
- Steering cylinder: double-acting
- Turning radius: 2.2-2.4 m (87-95 in)
- Rear Steer Axle: oscillating for stable outdoor maneuvering
- Pump type: external gear pump
- Flow output: 45-60 L/min (12-16 gpm)
- Maximum pressure: 17-19 MPa (2,465-2,755 psi)
- Hydraulic tank: 28-35 L (30-37 qt)
- Oil spec: ISO VG 32 / ISO VG 46
- Cylinders: dual lift, dual tilt (cushioned)
- Valve controls: mechanical proportional spool
Supported attachments:
- Side-shift
- Fork-positioner
- Rotator
- Drum clamp
- Bale clamp
- Push-pull
| Service Refill Capacities |
- Engine oil: 4.0-4.5 L
- Coolant: 7-9 L
- Transmission: 7-9 L
- Drive axle: 4.0-5.0 L
- Steer axle: 0.8-1.2 L
- Hydraulic system: 28-35 L
Available mast
configurations:
- Simplex (1-stage)
- Duplex (2-stage)
- Triplex (3-stage with full free-lift)
Lift heights:
- Simplex: 2.5-3.0 m (98-118 in)
- Duplex: 3.0-4.5 m (118-177 in)
- Triplex: 4.5-6.0 m (177-236 in)
Fork specifications:
- Standard: 1,070 mm (42 in)
- Optional: 1,220-1,829 mm (48-72 in)
- Width: 100-125 mm
- Thickness: 40-50 mm
- ITA Class: Class II / III
- Rated capacity: 2,500 kg (5,500 lb)
- Load center: 500 mm (20 in)
Capacity deration factors:
- tall mast assemblies
- long forks (extensions)
- heavy or offset attachments
- slope or uneven ground
- off-center loads
- Lift speed (unladen): 0.50-0.65 m/s
- Lift speed (laden): 0.30-0.45 m/s
- Lowering speed: 100-150 ft/min
- Gradeability (unladen): 22-28%
- Gradeability (laden): 14-20%
- Drawbar pull: 11,000-15,000 N (2,470-3,370 lbf)
- Overall length to fork face: 2.55-2.70 m (100-106 in)
- Overall width: 1.15-1.20 m (45-47 in)
- Overhead guard height: 2.15-2.25 m (85-89 in)
- Wheelbase: 1.60-1.70 m (63-67 in)
- Ground clearance: 135-160 mm (5.3-6.3 in)
- Carriage width: 1,000-1,100 mm (39-43 in)
- Turning radius: 2.2-2.4 m
- Aisle width (1000x1200 pallet): 3.45-3.75 m
- Maximum fork height: 2.5-6.0 m
- Free lift: 70-800 mm
- Supported fork lengths: 42-72 in
- Operating weight: 3,450-4,050 kg (7,600-8,930 lb)
- Counterweight: 1,650-2,000 kg (3,640-4,410 lb)
250-Hour:
- Engine oil and filter
- Mast and steer-axle lubrication
- Radiator cleaning
- Air filter inspection
500-Hour:
- Transmission oil
- Axle seal inspection
- Hydraulic suction strainer cleaning
1,000-Hour:
- Hydraulic oil and filters
- Coolant replacement
- Cylinder/hose inspection
- Wiring harness check
2,000-Hour:
- Drivetrain inspection
- Steering alignment
- Mast structural inspection
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