Komatsu FG20C-12 Specifications
The Komatsu FG20C-12 is a 2.0-ton (2,000 kg / 4,400 lb)
LPG/petrol cushion-tire forklift engineered for indoor industrial applications
requiring excellent maneuverability, compact dimensions, dependable engine
performance, and low operating vibration.
As part of Komatsu’s -12 Series, the FG20C-12
incorporates a rugged steel chassis, improved operator controls,
wide-visibility mast structures, and a drivetrain designed for
durability and straightforward serviceability. This model is powered by
the Nissan H20-II industrial engine, an updated variant of the widely
used H-series 2.0-liter spark-ignition platform.
The H20-II delivers smooth mid-range torque,
excellent throttle response, low emissions, and reliable operation
during multi-shift warehouse duty cycles. Paired with a torque-converter
powershift transmission, hydrostatic steering, and high-efficiency
hydraulic system, the FG20C-12 performs exceptionally in manufacturing
plants.
Technical Data
Model: Nissan H20-II Industrial
Type: inline 4-cylinder, 4-stroke spark-ignition
Displacement: 1.982 L (1,982 cc)
Bore/stroke: 84.5x88 mm (3.33x3.46 in)
Rated power: 33-40 kW (44-54 hp) @ 2,400-2,600 rpm
Peak torque: 135-160 Nm (100-118 lb-ft) @ 1,600-1,800 rpm
Fuel: LPG or gasoline
Fuel system: mixer-type or carburetor depending on market
Aspiration: naturally aspirated
Idle speed: 650-750 rpm
Engine character: smooth, reliable, long service life, easy to maintain.
Lubrication System
Type: wet-sump, full-pressure
Oil capacity: 3.5-4.5 L (3.7-4.8 qt)
Oil pressure: 250-400 kPa (36-58 psi)
Oil type: SAE 10W-30 / 15W-40
Pump: internal gear type
Filter: spin-on full-flow
Cooling System
Cooling method: liquid-cooled
Coolant capacity: 6.5-8.0 L (6.9-8.4 qt)
Thermostat opening: 82°C (180°F)
Fully open: 95°C (203°F)
Pump: centrifugal
Fan: mechanical
Radiator: fin-tube industrial core
System pressure: 88-108 kPa (13-16 psi)
Transmission
Type: torque-converter powershift
Gears: 1-2 forward / 1-2 reverse
Direction control: mechanical shuttle lever
Travel speed (unladen): 16-18 km/h (10-11 mph)
Travel speed (laden): 14-16 km/h (9-10 mph)
Transmission fluid capacity: 6-8 L (6.3-8.4 qt)
Fluid type: Dexron II/III ATF
Cooling: integral Transmission oil cooler
Front Drive Axle
Construction: cast-steel
Differential: bevel-gear
Lubrication capacity: 3.0-4.0 L (3.2-4.2 qt)
Oil: SAE 80W-90
Rear Steer Axle
Type: oscillating center-pivot
Oscillation: ±8-10 degrees
Lubrication volume: 0.7-1.0 L
Brake System
Service brakes: hydraulic drum
Parking brake: mechanical lever-type
Notes: reliable and low service-frequency design.
System voltage: 12 V
Battery capacity: 65-90 Ah
Alternator output: 30-50 A
Starter motor: 1.6-2.0 kW
Wiring: sealed industrial harness
Dashboard indicators:
- oil pressure
- coolant temperature
- charge lamp
- fuel level (LPG/petrol)
- hour meter
- parking brake
Drive configuration: front-wheel drive
Steering: rear-wheel steering
Chassis: welded steel industrial frame
Counterweight: integral cast-steel assembly
Tire Sizes (C-Series)
Front: 21x7-15
Rear: 16x6-10.5
Optional: non-marking compounds, high-traction indoor tires
Chassis enhancements:
- reinforced overhead guard
- protected hydraulic/electrical routing
- anti-slip steps
- rubber engine mounts reduce vibration
- compact cushion-tire geometry optimized for tight aisle turning
Steering:
Steering type: fully hydrostatic
Pump flow: 5-8 L/min (1.3-2.1 gpm)
Steer cylinder: double-acting
Turning radius: 2.0-2.2 m (79-87 in)
Rear axle: oscillating for added stability
Pump: external gear-type
Flow output: 35-50 L/min (9-13 gpm)
System pressure: 15-18 MPa (2,175-2,610 psi)
Hydraulic reservoir: 22-28 L (23-30 qt)
Oil specification: ISO VG 32 / VG 46
Cylinders: dual lift, dual tilt with cushioning
Control valves: mechanical spool type
Supported hydraulic attachments:
- side-shift
- fork-positioner
- rotator
- clamp (bale/drum)
- push-pull
- slip-sheet
| Service Refill Capacities |
Engine oil: 3.5-4.5 L
Coolant: 6.5-8.0 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 options:
- simplex (1-stage)
- duplex (2-stage)
- triplex (3-stage with full free-lift)
Lift height ranges:
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)
Forks:
Standard forks: 920 mm (36 in), 1,070 mm (42 in)
Optional: 1,220-1,829 mm (48-72 in)
Fork width: 100-125 mm
Thickness: 35-40 mm
ITA Class: II
Rated capacity: 2,000 kg (4,400 lb)
Load center: 500 mm (20 in)
Capacity reduction occurs with:
- elevated loads
- long forks
- heavy/offset attachments
- uneven flooring
Lift speed (unladen): 0.40-0.55 m/s
Lift speed (laden): 0.25-0.38 m/s
Lowering speed: 100-150 ft/min
Drawbar pull: 8,000-10,000 N (1,800-2,250 lbf)
Gradeability (unladen): 18-24%
Gradeability (laden): 10-16%
Overall length to fork face: 2.25-2.40 m (89-95 in)
Overall width: 1.05-1.12 m (41-44 in)
Overhead guard height: 2.00-2.10 m (79-83 in)
Wheelbase: 1.40-1.50 m (55-59 in)
Carriage width: 900-1,000 mm (35-39 in)
Ground clearance (under mast): 95-110 mm (3.7-4.3 in)
Ground clearance (under chassis): 105-120 mm (4.1-4.7 in)
Turning radius: 2.0-2.2 m
Aisle width (pallet 1000x1200): 3.10-3.35 m
Max fork height: 2.5-5.0 m
Free lift: 70-600 mm
Supported fork lengths: 36-72 in
Operating weight: 3,000-3,450 kg (6,600-7,600 lb)
Counterweight: 1,300-1,550 kg (2,870-3,415 lb)
250-hour service:
- replace engine oil and filter
- clean radiator
- lubricate mast/steer axle
- inspect air filter
500-hour service:
- replace Transmission oil
- inspect axle seals
- clean suction strainer
1,000-hour service:
- replace hydraulic oil and filters
- replace coolant
- inspect hoses, cylinders, electrical harness
2,000-hour service:
- full driveline inspection
- steering alignment
- mast and carriage structure inspection
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