Crawler bulldozer D39EXi-24

trackedoutdoorfor construction

Overview
The D39EXi-24 is a medium-class crawler dozer designed for fast, accurate grading and efficient site preparation. Equipped with Intelligent Machine Control (IMC) and a fuel-efficient Komatsu SAA4D95LE-7 engine (EPA Tier 4 Final / EU Stage 4), it delivers strong blade response, excellent visibility and operator comfort for long shifts.

Key benefits

• Shorten operator ramp-up time with automated assist functions
• Transition quickly from bulk excavation to finish grading
• Integrate 3D design data directly into machine workflows
• Maintain high productivity pass after pass

Features and benefits

• Learns as it works — Proactive dozing control records terrain and uses that data to plan subsequent passes for improved productivity.
• Lift layer control — Automatically spreads fill from existing terrain for consistent lift layers and better production rates.
• Tilt steering control — Automatically tilts the blade to help maintain a straight trajectory during rough dozing and reduce steering input.
• Quick surface creation — Create a temporary design surface with one button to start automated stripping or spreading before a finish model is available.
• Close the operator skill gap — Machine logic progressively learns terrain and operator input to reduce dependence on operator experience.
• Advanced machine control — Near-auto operation possible for auto stripping, rough dozing, spreading and advanced finish grading; some functions operate without a 3D model.
• Operator-adaptive automation — Automatic functions learn from operator blade inputs for smoother and more intuitive control.
• Precise finish grading — IMC anticipates grade transitions and adjusts blade angle for superior finish performance.

Resources

• Downloadable product brochure available (see product page).
• Competitive comparison tool and press release available in product resources.

Standard equipment (selection)

• Accumulator for Electric Proportional Control (EPC)
• Dry double-element air cleaner with warning lamp on monitor
• Air conditioner (A/C)
• Alternator 24 V / 85 A
• Back-up alarm
• Large-capacity batteries 24 V / 92 Ah
• Cab accessories: 12 V x2 power outlets, cup holder, rear view mirror, rear view monitor, Bluetooth/USB-compatible radio with remote AUX
• Crankcase guard and front underguard
• Decelerator/brake pedal (single pedal)
• Electronically controlled Hydrostatic Transmission (HST) with quick-shift and variable speed settings
• Electronic monitor panel with on-board diagnostics
• Engine hood and side panels
• Engine: Komatsu SAA4D95LE-7 (EPA Tier 4 Final / EU Stage 4 certified)
• Hydraulic fan with electronic control
• Fuel pre-filter and fuel filter
• Hydraulics for PAT dozer
• Large high-resolution LCD
• LED worklights
• Operator Identification System
• Palm Command Control System (PCCS) with EPC for blade and travel control
• Power turn with counter rotation
• ROPS cab to ISO/SAE standards; FOPS
• Air-suspension heated seat
• Self-adjusting rollers, sprockets bolt-on, triple labyrinth final drive

Notes
The machine includes Intelligent Machine Control features such as proactive dozing control, lift layer control, tilt steering control and quick surface creation to enable automated functions and improve grading productivity.

Technical specifications

• Model: D39EXi-24
• Engine model: Komatsu SAA4D95LE-7
• Engine type: 4-cycle, water-cooled, direct injection
• Aspiration: Variable flow turbocharged, air-to-air aftercooled
• Cylinders: 4
• Bore x stroke: 95 x 115 mm
• Displacement: 3.26 L
• Net power: 105 HP @ 2,200 rpm (ISO 9249 / SAE J1349)
• Gross power: 107 HP (SAE J1995)
• Rated speed: 2,200 rpm
• Operating weight: 10,409 kg (22,950 lbs)
• Tractor weight: 8,850 kg (19,510 lbs)
• Blade capacity: 2.40 m³ (3.14 yd³)
• Final drive: In-shoe axial-piston travel motors with two-stage planetary reduction
• Undercarriage: Rigid type; large-section monocoque track roller frame
• Shoe type (std): Single grouser; shoe width: 510 mm (20 in)
• Track rollers (each side): 6
• Shoes (each side): 39
• Grouser height: 47 mm (1.9 in)
• Track gauge: 1,620 mm (5 ft 4 in)
• Ground contact length: 2,345 mm (7 ft 8 in)
• Ground contact area: 23,919 cm² (25.7 ft²)
• Ground pressure (std shoe, ISO 16754): 0.37 kg/cm² (5.24 psi)
• Hydrostatic transmission: Dual-path HST; infinite speed changes; travel control lock lever and neutral switch
• Travel speed (variable) forward/reverse: 0 - 8.5 kph (0 - 5.3 mph)
• Fuel tank: 190 L (50.2 US gal); DEF tank: 10 L (2.6 US gal)
• Coolant: 34 L; Engine oil: 11 L
• Hydraulic tank: 64 L
• Steering: Palm Command Control System (PCCS) joystick; pivot turning radius ~2.2 m (87 in)
• Operator environment: ROPS cab to ISO/SAE standards; heated air-suspension seat; large LCD monitor; rear view monitor