Komatsu FG15C-15 Specifications
The Komatsu FG15C-15 is a compact, maneuverable 1.5-ton
(1,500 kg / 3,300 lb) cushion-tire LPG/petrol forklift engineered primarily for
indoor industrial applications requiring smooth rolling, tight turning radii,
and excellent operator visibility.
As part of Komatsu’s proven 15 Series
cushion-tire lineup, the FG15C-15 is widely used in manufacturing
plants, warehousing, packaging operations, retail distribution centers,
food-processing plants, and dock-side loading environments where precise
load handling and low ground vibration are essential.
This model is equipped with the robust Toyota 4P industrial engine - an
exceptionally reliable 1.8-liter spark-ignition engine known across the
material-handling industry for its long service life, smooth torque
delivery, quiet operation, and straight forward maintenance
requirements. The engine’s proven industrial lineage makes it well
suited for multi-shift operations, especially where clean combustion,
predictable throttle response, and fuel efficiency are necessary.
The FG15C-15 integrates a torque-converter powershift transmission,
hydrostatic steering system, load-sensing hydraulic pump, rugged welded
steel chassis, and a comfortable operator platform with simplified
control levers. Cushion tires further enhance maneuverability on smooth
indoor surfaces, giving the machine a compact footprint ideal for
confined warehouse aisles.
Technical Data
- Engine Model: Toyota 4P Industrial
- Engine type: inline 4-cylinder, 4-stroke, spark-ignition
- Displacement: 1.8 L (1,800-1,815 cc)
- Bore/stroke: approx. 80.5x89 mm (3.17x3.50 in)
- Rated power: 30-35 kW (40-47 hp) @ 2,400-2,600 rpm
- Peak torque: 135-155 Nm (100-114 lb-ft) @ 1,600-1,900 rpm
- Fuel type: LPG or gasoline
- Fuel system: carburetor or LPG mixer (depending on region)
- Aspiration: naturally aspirated
- Combustion system: spark-ignition
- Idle speed: 650-750 rpm
- Engine characteristics: smooth low-RPM torque, excellent dependability, very
low vibration, long overhaul interval.
Lubrication System
- Lubrication method: full-pressure wet-sump
- Oil pump: internal gear-type
- Oil capacity: 3.0-4.0 L (3.2-4.2 qt)
- Operating oil pressure: 250-400 kPa (36-58 psi)
- Recommended oils: SAE 10W-30 or 15W-40 (LPG/petrol spec)
- Oil filter: spin-on full-flow
- Notes: proven lubrication design supports long engine life even in multi-shift
warehouse environments.
Cooling System
- Cooling method: liquid-cooled
- Coolant capacity: 6-8 L (6.3-8.4 qt)
- Thermostat opening: 82°C (180°F)
- Fully open: approx. 95°C (203°F)
- Radiator: fin-tube, high-efficiency industrial
- Coolant pump: belt-driven centrifugal
- Cooling fan: mechanical
- System pressure: 88-108 kPa (13-16 psi)
Transmission
- Type: torque-converter powershift
- Gears: 1-2 forward / 1-2 reverse
- Direction selection: mechanical shuttle lever
- Unladen travel speed: 16-18 km/h (10-11 mph)
- Laden travel speed: 14-16 km/h (9-10 mph)
- Transmission fluid capacity: 6-8 L (6.3-8.4 qt)
- Recommended fluid: Dexron II/III ATF
- Transmission cooling: integrated oil cooler
Front Drive Axle
- Configuration: rigid cast-steel axle
- Differential: bevel-gear industrial type
- Oil capacity: 3.0-4.0 L (3.2-4.2 qt)
- Lubricant: SAE 80W-90 gear oil
Rear Steer Axle
- Type: oscillating center-pivot
- Oscillation: ±7-9 degrees
- Lubrication volume: 0.7-1.0 L
- Notes: improves stability and comfort on uneven indoor floors or dock plates.
Braking System
- Service brakes: hydraulic drum brakes
- Parking brake: mechanical hand-lever, drum-type
- Notes: smooth, predictable stopping behavior for tight indoor environments.
- System voltage: 12 V
- Battery capacity: 60-80 Ah
- Alternator output: 30-50 A
- Starter motor: 1.4-1.8 kW
- Harness: sealed connectors, industrial-grade cable insulation
Standard instrument panel indicators:
- engine oil pressure
- coolant temperature
- battery charging indicator
- LPG/petrol fuel gauge
- hour meter
- parking brake indicator
Drive layout:
- Front-wheel drive
- Rear-wheel steering
- Type: cushion-tire forklift
Tire Sizes:
- Front: 21x7-15
- Rear: 16x6-10.5
- Optional variants: high-traction solid rubber, non-marking compounds
Chassis Design:
- Fully welded steel frame
- Heavy counterweight integrated into rear body
- Reinforced overhead guard
- Anti-slip steps and floor plates
- Rubber engine mounts reduce vibration
- Protected hydraulic and electrical routing
Steering:
- Type: fully hydrostatic steering
- Pump flow: 5-8 L/min (1.3-2.1 gpm)
- Steering cylinder: double-acting
- Minimum turning radius: 1.9-2.1 m (75-83 in)
- Rear axle: oscillating
- Steering characteristics: very tight turning suitable for narrow aisles.
- Pump type: engine-driven external gear pump
- Flow output: 35-50 L/min (9-13 gpm)
- Maximum hydraulic pressure: 15-18 MPa (2,175-2,610 psi)
- Hydraulic reservoir: 22-28 L (23-30 qt)
- Hydraulic oil spec: ISO VG 32 or ISO VG 46
- Cylinders: dual lift and dual tilt (cushioned)
- Control valves: mechanical proportional spool types
| Service Refill Capacities |
- Engine oil: 3.0-4.0 L
- Coolant: 6-8 L
- Transmission: 6-8 L
- Drive axle: 3.0-4.0 L
- Steer axle: 0.7-1.0 L
- Hydraulic reservoir: 22-28 L
Mast configurations:
- Simplex (1-stage)
- Duplex (2-stage)
- Triplex (3-stage full free-lift)
Lift heights:
- Simplex: 2.5-3.0 m (98-118 in)
- Duplex: 3.0-4.0 m (118-157 in)
- Triplex: 4.0-5.0 m (157-197 in)
Fork specifications:
- Standard lengths: 920 mm (36 in) or 1,070 mm (42 in)
- Optional: 1,220-1,829 mm (48-72 in)
- Fork width: 100 mm
- Fork thickness: 35-40 mm
- ITA fork class: Class II
- Rated load capacity: 1,500 kg (3,300 lb)
- Load center: 500 mm (20 in)
Capacity is reduced with:
- high lift heights
- long forks
- heavy attachments
- side-shift offset
- off-center or uneven loading
- operation on slopes
- Lift speed (unladen): 0.45-0.58 m/s
- Lift speed (laden): 0.25-0.38 m/s
- Lowering speed: 100-150 ft/min
- Gradeability (unladen): 18-24%
- Gradeability (laden): 10-16%
- Drawbar pull: 7,000-10,000 N (1,570-2,250 lbf)
- Overall length to fork face: 2.20-2.35 m (87-93 in)
- Overall width: 1.00-1.05 m (39-41 in)
- Overhead guard height: 1.95-2.05 m (77-81 in)
- Wheelbase: 1.35-1.45 m (53-57 in)
- Ground clearance (under mast): 90-110 mm (3.5-4.3 in)
- Ground clearance (under chassis): 100-110 mm (3.9-4.3 in)
- Carriage width: 900-1,000 mm (35-39 in)
- Turning radius: 1.9-2.1 m
- Aisle width (1000x1200 pallet): 3.0-3.3 m
- Maximum fork height: 2.5-5.0 m
- Free lift: 70-600 mm
- Supported fork sizes: 36-72 in
- Operating weight: 2,500-2,950 kg (5,510-6,500 lb)
- Counterweight: 1,150-1,380 kg (2,535-3,040 lb)
250-hour service:
- Replace engine oil and filter
- Lubricate steer axle and mast channels
- Clean radiator and airflow passages
- Inspect air filter
500-hour service:
- Replace Transmission oil
- Inspect driveline and axle seals
- Clean hydraulic suction strainer
1,000-hour service:
- Replace hydraulic oil and filters
- Replace coolant
- Inspect hydraulic cylinders and hoses
- Inspect electrical harnesses and connectors
- Check attachment mount points
2,000-hour service:
- Full drivetrain inspection
- Steering geometry and linkage inspection
- Full mast and carriage structural inspection
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