Hyster S120FT Specifications
The Hyster S120FT is a high-capacity, cushion-tire,
internal-combustion forklift belonging to the modern Hyster Fortis series - well
known for combining rugged industrial design with enhanced ergonomics, durable
powertrain engineering, and reduced maintenance requirements.
With a nominal lift capacity of 12,000 lb
(5,443 kg), the S120FT is built for demanding indoor heavy-duty
operations such as steel fabrication plants, industrial warehouses,
large manufacturing lines, paper mills, beverage distribution, and heavy
component transport. Its compact yet powerful structure, combined with
its cushion tires, makes it suitable for smooth indoor flooring where
precise maneuverability and tight turning radii are essential.
The S120FT is engineered to offer consistent hydraulic performance,
smooth electronic engine control, excellent visibility through the mast,
reduced vibration, and simplified service access. The truck is
especially valued in multi-shift environments due to its robust cooling
performance, dependable drivetrain, long component lifecycles, and
operational efficiency.
With strong load handling at full height,
superior durability, and advanced Fortis-series operator features, the
S120FT delivers an excellent balance of power, reliability, and ease of
maintenance.
Standard engine
configurations include:
- Hyster / GCT (Nissan) 4.0-L LPG industrial engine
- GM 4.3-L V6 LPG/gasoline engine (earlier variants)
Engine Characteristics:
- Displacement: approx. 3.9-4.3 L
- Rated power: approx. 85-100 hp (63-75 kW)
- Peak torque: approx. 160-210 lb-ft (217-285 Nm)
- Idle speed: approx. 650-750 rpm
- Maximum governed speed: approx. 2,500-2,700 rpm
- Fuel types: LPG or gasoline
- Ignition: distributorless electronic ignition
Lubrication System:
- Lubrication type: full-pressure wet-sump
- Oil capacity: approx. 6.0-7.0 L (6.3-7.4 qt)
- Normal oil pressure: 25-35 psi (172-241 kPa) at idle
- High-speed oil pressure: 60-70 psi (414-483 kPa)
- Recommended oils: SAE 10W-30 or 15W-40
- Filter: spin-on full-flow type
Cooling System:
- Coolant capacity: approx. 12-14 L (12.7-14.8 qt)
- Thermostat opening: approx. 82°C (180°F)
- Cooling system pressure: approx. 13-15 psi (90-103 kPa)
- Cooling components: belt-driven centrifugal water pump, mechanical fan,
cross-flow radiator
The S120FT uses a heavy-duty industrial powershift
transmission.
Transmission:
- Type: 1- or 2-speed hydraulic powershift
- Forward speed (unladen): approx. 10-12 mph (16-19 km/h)
- Reverse speed: approx. 9-11 mph (15-18 km/h)
- Transmission fluid capacity: approx. 12-16 L (12.7-17 qt)
- Recommended fluid: ATF Dexron III or approved industrial ATF
The truck uses a planetary reduction drive axle engineered for high-torque,
heavy-load work.
Drive Axle:
- Lubrication capacity: approx. 8-10 L (8.4-10.5 qt)
- Lubricant: SAE 80W-90 or 85W-140 gear oil
Brakes:
- Service brakes: hydraulic wet-disc brakes (low-maintenance)
- Parking brake: mechanical or hydraulic spring-applied brake
The S120FT has a reliable, industrial-grade 12-volt
electrical system.
- Operating voltage: 12 V
- Battery capacity: approx. 100-140 Ah
- Alternator output: approx. 70-90 A
- Starter motor rating: approx. 2.5-3.5 kW
- ECM: manages ignition, fuel, and emission control
Drive Configuration:
- Drive wheels: front
- Steering wheels: rear
- Drive mode: 2WD
Tire Options (Cushion):
- Front: approx. 22x9x16
- Rear: approx. 18x6x12
Non-marking variants may be installed for clean floor operations.
The S120FT uses a hydrostatic rear-wheel steering system.
Steering:
- Steering type: hydraulic orbitrol
- Pump flow: approx. 10-15 L/min (2.6-4.0 gpm)
- Steering axle: oscillating center-pivot
- Turning radius: approx. 2.9-3.1 m (114-122 in)
Hydraulics control lift, tilt, and auxiliary functions.
- Maximum system pressure: approx. 2,500-3,000 psi (172-207 bar)
- Pump type: engine-driven gear pump
- Pump flow: approx. 45-65 L/min (12-17 gpm)
- Hydraulic reservoir: approx. 40-45 L (42-48 qt)
- Hydraulic fluid: ISO VG 32 or VG 46
| Service Refill Capacities |
- Engine oil: approx. 6.0-7.0 L (6.3-7.4 qt)
- Cooling system: approx. 12-14 L (12.7-14.8 qt)
- Transmission fluid: approx. 12-16 L (12.7-17 qt)
- Drive axle oil: approx. 8-10 L (8.4-10.5 qt)
- Hydraulic system: approx. 40-45 L (42-48 qt)
Mast Types:
- Simplex (2-stage)
- Duplex (2-stage with free lift)
- Triplex (3-stage full free lift)
Mast Heights:
- Simplex: approx. 3.0-3.6 m (118-142 in)
- Duplex: approx. 3.6-4.2 m (142-165 in)
- Triplex: approx. 4.5-6.0 m (178-236 in)
Free Lift:
- approx. 0.9-1.5 m (35-59 in)
Fork Specifications:
- Standard fork length: 1,067-1,219 mm (42-48 in)
- Optional: up to 1,829 mm (72 in)
- Fork width: 125-150 mm (5-6 in)
- Thickness: 45-60 mm (1.75-2.4 in)
Rated capacity: 12,000 lb (5,443 kg) at 24-in (610-mm)
load center
De-rating occurs with:
- Higher lift height
- Long forks
- Attachments
- High load centers
- Lift speed (unladen): approx. 0.45-0.55 m/s (90-110
ft/min)
- Lift speed (laden): approx. 0.35-0.45 m/s (70-90 ft/min)
- Lowering (unladen): approx. 100-130 ft/min
- Lowering (laden): approx. 110-150 ft/min
- Gradeability (unladen): approx. 22-28%
- Gradeability (laden): approx. 12-16%
- Drawbar pull: approx. 8,000-11,000 N (1,800-2,470 lbf)
- Overall length to fork face: approx. 3.4-3.6 m
(134-142 in)
- Overall width: approx. 1.45-1.55 m (57-61 in)
- Overhead guard height: approx. 2.2-2.3 m (87-91 in)
- Wheelbase: approx. 2.1-2.2 m (83-87 in)
- Ground clearance: approx. 120-150 mm (4.7-5.9 in)
- Turning radius: approx. 2.9-3.1 m (114-122 in)
- Aisle width (1000x1200 pallet): approx. 4.6-4.9 m (181-193 in)
- Max fork height: 3.0-6.0 m depending on mast
- Free lift: approx. 0.9-1.5 m
- Fork lengths: 42-72 in
- Operating weight: 13,000-15,000 lb (5,897-6,804 kg)
- Counterweight mass: approx. 3,500-4,000 lb (1,587-1,814 kg)
250-Hour Service:
- Replace engine oil and filter
- Clean radiator fins
- Lubricate mast pivots
- Inspect steering components
500-Hour Service:
- Replace transmission filter
- Inspect hydraulic filter
- Check driveline bolts
- Inspect axle seals
1,000-Hour Service:
- Replace transmission fluid
- Replace axle oil
- Inspect hoses and hydraulic connections
2,000-Hour Service:
- Replace hydraulic fluid
- Replace coolant
- Perform complete mast and carriage inspection
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