Cat DP30NT Specifications
The Caterpillar DP30NT is a 3.0-ton (3,000 kg / 6,614
lb) diesel pneumatic-tire forklift engineered for heavy-duty indoor-outdoor
industrial applications requiring consistent torque, smooth hydraulic
performance, rugged structural integrity, and long-duration reliability.
As a core model in Caterpillar’s NT-Series
diesel lineup, the DP30NT is optimized for construction-material yards,
metal fabrication facilities, distribution centers, concrete operations,
manufacturing sites, timber yards, and general outdoor logistics.
Power is supplied by the Mitsubishi S4S 3.3-liter industrial diesel
engine—an exceptionally durable, fuel-efficient, naturally aspirated
four-cylinder powerplant recognized worldwide for low fuel consumption,
strong mid-range torque, long service intervals, and extremely high
durability.
The DP30NT integrates a reinforced welded-steel
chassis, high-rigidity mast, industrial powershift transmission, full
hydrostatic steering, effective vibration isolation, and a
maintenance-friendly component layout.
Mitsubishi S4S -
Technical Specifications:
- Engine type: inline 4-cylinder, 4-stroke diesel
- Displacement: approx. 3.331 L (3,331 cc)
- Bore x stroke: 94 x 120 mm
- Rated output: approx. 36-44 kW (48-59 hp) @ 2,300-2,500 rpm
- Peak torque: approx. 180-210 Nm @ 1,600-1,800 rpm
- Combustion: indirect injection (prechamber)
- Fuel system: mechanical in-line injection pump
- Aspiration: naturally aspirated
- Idle: approx. 750 ± 50 rpm
- Emissions level: varies by market
- Performance notes: excellent longevity, easy cold start, low vibration.
Lubrication System:
- Type: full-pressure wet-sump
- Oil pump: internal gear-type
- Oil capacity: approx. 6.8-7.5 L
- Normal operating pressure: 250-400 kPa
- Recommended oil: SAE 10W-30 or 15W-40 (API CF/CG/CH)
- Filter: spin-on full-flow
Cooling System:
- Type: liquid-cooled
- Capacity: approx. 8-10 L
- Thermostat: opens approx. 82°C; fully open approx. 95°C
- Fan: engine-driven mechanical fan
- Pump: belt-driven centrifugal
- Radiator: heavy-duty industrial fin-tube
- Pressure: approx. 88-108 kPa.
Transmission:
- Type: heavy-duty industrial powershift
- Speeds: 1-2 forward / 1-2 reverse
- Direction control: electric-over-hydraulic
- Travel speed (unladen): approx. 18-20 km/h
- Travel speed (laden): approx. 16-18 km/h
- Fluid capacity: approx. 8-12 L
- Fluid type: Dexron III ATF
- Cooling: oil-to-air heat exchanger
Front Drive Axle:
- Rigid heavy-duty axle
- Bevel-gear differential
- Oil capacity: 4-5.5 L
- Lubricant: SAE 80W-90
Rear Steer Axle:
- Oscillating center-pivot design
- Oscillation: ±8-10 degrees
- Capacity: 1-1.5 L
Brakes:
- Service: hydraulic drum brakes
- Parking: mechanical drum
- Optional: wet-disc brakes.
- Voltage: 12 V
- Battery: 70-110 Ah
- Alternator: 40-60 A
- Starter: 2.5-3.0 kW
- Harness: protected, sealed connectors
- Indicators: oil pressure, coolant temp, battery, glow plug, hour meter,
parking brake.
Drive:
- Front-wheel drive
- Rear-wheel steering
Tires:
- Front: approximately 28x9-15 or 7.00-12
- Rear: 6.00-9 or 6.50-10
- Optional: solid pneumatic, non-marking types
Chassis Construction:
- Heavy welded steel frame
- Integrated counterweight
- Reinforced overhead guard
- Anti-slip steps
- Rubber-mounted powertrain
- Protected hydraulic and electrical routing
Steering:
- Steering type: fully hydrostatic
- Pump flow: approx. 6-12 L/min
- Cylinder: double-acting
- Turning radius: approx. 2.3-2.5 m.
- Pump: engine-driven gear pump
- Flow: approx. 50-70 L/min
- Pressure: approx. 17-19 MPa
- Reservoir: approx. 30-37 L
- Oil: ISO VG 32/46
- Lift cylinders: dual, double-acting
- Tilt cylinders: dual, cushioning
- Valve: proportional spool
Supported Attachments:
- Side-shift
- Fork-positioner
- Rotator
- Bale/drum clamp
- Push-pull.
| Service Refill Capacities |
- Engine oil: 6.8-7.5 L
- Cooling system: 8-10 L
- Transmission: 8-12 L
- Drive axle: 4-5.5 L
- Steer axle: 1-1.5 L
- Hydraulic tank: 30-37 L
- Simplex mast: 2.5-3.5 m
- Duplex mast: 3.0-4.5 m
- Triplex mast: 4.5-6.0 m
- Free lift: 80-1,000 mm
- Fork sizes: 1,070 or 1,220 mm standard; 914-1,829 mm optional
- Class: ITA Class II/III.
- Rated capacity: 3,000 kg
- Load center: 500 mm
- Capacity reduces with: mast height, long forks, attachments, uneven terrain.
- Lift speed (unladen): 0.45-0.60 m/s
- Lift speed (laden): 0.28-0.45 m/s
- Lowering speed: 110-160 ft/min
- Gradeability (laden): 12-20%
- Drawbar pull: approx. 14,000-18,000 N.
- Length to fork face: 2.6-2.8 m
- Width: 1.15-1.25 m
- Overhead guard height: 2.1-2.2 m
- Wheelbase: 1.6-1.7 m
- Ground clearance: 120-150 mm
- Turning radius: 2.3-2.5 m
- Aisle width (1000x1200 pallet): 3.6-3.8 m
- Max fork height: 2.5-6.0 m
- Free lift: up to 1,000 mm
- Operating weight: approx. 4,100-4,700 kg
- Counterweight mass: approx. 1,900-2,300 kg.
250 Hours:
- Engine oil/filter
- Lubricate mast/axle
- Clean radiator
500 Hours:
- Transmission service
- Axle inspection
- Hydraulic strainer cleaning
1,000 Hours:
- Hydraulic oil/filters
- Coolant replacement
- Hose/cylinder inspection
2,000 Hours:
- Full driveline/steering inspection
- Mast inspection.
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