Metric Imperial (US)
Product Image
Product Image
Product Image

Dozers

D71PX-24

Mid-size dozers

  • Horsepower (HP) 237 HP @ 2,200 rpm
  • Horsepower (kW) 177 kW @ 2 200 rpm
  • Operating weight (kg) 23 100 - 23 900
  • Operating weight (lbs) 50,927 - 52,690
  • Blade capacity (m^3) 4.7 - 5.1
  • Blade capacity (yd^3) 6.1 - 6.6

Purchase options

Request a quote Find a dealer

An all-around dozer that delivers

Versatile enough to accomplish rough dozing to grading, Komatsu’s largest hydrostatic transmission dozer H mode helps operators maintain ground speed while operating under heavy loads. Distinctive slant nose design offers operators exceptional visibility and precision on the job site.

  • Lower ground pressure than D71EX
  • 4% more efficient over D65PX VPAT
  • Fast travel and steering response from HST drive

Resources

Features and benefits

Outstanding visibility for your operators

Outstanding visibility for your operators

Outstanding visibility to the cutting edges and excellent balance and maneuverability with a super-slant nose cab-forward design.

Smooth shifting and control

Smooth shifting and control

Smooth, powerful turns with hydrostatic steering. Fully electronic control provides complete automatic shifting and allows for Quick-Shift or variable speed selection.

Choose the right mode for the job

Choose the right mode for the job

In P mode, the engine outputs its full power to help your operator perform heavy-load work. It automatically increases engine speed for maximum power when load increases. H mode increases engine high idle speed, suitable for power-intensive work.

Versatile and productive adjustable blade

Versatile and productive adjustable blade

Flexibility to adapt to various situations and the ability to be efficient and productive regardless of the terrain with a versatile 6-way PAT (power angle tilt) blade pitch system.

Easy-access maintenance features

Easy-access maintenance features

Easy access to the radiator, oil cooler and charge air cooler with swing-up assisted lift system. Hydraulic fan reverses for clearing objects restricting air flow. Rear-mounted single-plane cooling system swings up for fast service.

Long-lasting undercarriage

Long-lasting undercarriage

Designed to wear evenly so the machine provides close to 100% usage of undercarriage components, Komatsu PLUS undercarriage lowers undercarriage maintenance costs by up to 40% over a conventional undercarriage. Strengthened rollers and links increase wear life up to two times.

Ready for low ground pressure needs

Ready for low ground pressure needs

To provide your operation with even more versatility and adaptability, the D71 is available with an optional 36-inch wide shoe for low ground pressure applications.

Comfortable, ergonomic controls

Comfortable, ergonomic controls

Designed for your operator’s comfort and ease of use, the ergonomic, low-effort palm command control system (PCCS) joystick controls all directional movements, including machine travel speed and counter-rotation.

Bluetooth/USB-compatible radio

Bluetooth/USB-compatible radio

To help maximize operator comfort and connectivity, the D71 comes with standard Bluetooth AM/FM radio and additional AUX and USB connection capability.


Specifications

Metric Imperial (US)
Expand all

  • Suspension: Oscillating-type with equalizer bar and pivot shafts
  • Track roller frame: Monocoque, large section, durable construction
  • Rollers and idlers: Lubricated track rollers
  • Type of shoes (standard): Single grouser
  • Number of track rollers (each side): 8
  • Number of shoes (each side): 45
  • Lubricated tracks: Parallel Link Undercarriage System (PLUS) with lubricated rotating bushings for extended system wear life and lower maintenance costs. Track tension is adjusted easily with grease gun.
  • Grouser height (in): 2.6
  • Grouser height (mm): 65
  • Shoe width (standard)(mm): 760 - 915
  • Shoe width (standard)(in): 30 - 36
  • Ground contact area (cm^2): 49 780 - 59 930
  • Ground contact area (ft2): 53.6 - 64.5
  • Ground pressure (with standard shoe)(ISO 16754)(psi): 5.0 - 5.8
  • Ground pressure (with standard shoe)(ISO 16754)(kpa): 35 - 40
  • Track gauge (mm): 2 230 - 2 385
  • Track gauge (ft): 7 ft. 3 in - 7 ft. 10 in
  • Length of track on ground (mm): 3 275
  • Length of track on ground (ft): 10 ft. 8.9 in

  • Hydrostatic transmission features: Dual-path, hydrostatic transmission provides infinite speed changes up to 9.0 km/h 5.6 mph. The variable capacity travel motors allow the operator to select the optimum speed to match specific jobs. Travel control lock lever and neutral switch.

  • Reverse

    • 1st reverse (kph): 0 - 4.5
    • 1st reverse (mph): 0 - 2.8
    • 2.5th (kph): 0 - 9.3
    • 2.5th (mph): 0 - 5.8
    • 2nd reverse (mph): 0 - 4.7
    • 2nd reverse (kph): 0 - 7.5
    • 3rd reverse (kph): 0 - 11
    • 3rd reverse (mph): 0 - 6.8
    • Travel speed reverse (variable mode) (kph): 0,8 - 11
    • Travel speed reverse (variable mode) (mph): 0.5 - 6.8

  • Forward

    • 1st forward (kph): 0 - 3.8
    • 1st forward (mph): 0 - 2.4
    • 2.5th forward (mph): 0 - 5.2
    • 2.5th forward (kph): 0 - 8.4
    • 2nd forward (kph): 0 - 6.5
    • 2nd forward (mph): 0 - 4
    • 3rd forward (kph): 0 - 11
    • 3rd forward (mph): 0 - 6.8
    • Travel speed forward (variable mode) (kph): 0.8 - 11
    • Travel speed forward (variable mode) (mph): 0.5 - 6.8

  • Hydraulic system features: Closed-Center Load Sensing System (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.
  • Hydraulic control unit (ltr/min): All spool control valves externally mounted remote to the hydraulic tank. Piston-type hydraulic pump with capacity (discharge flow) of 235 L/min at rated engine rpm.
  • Hydraulic control unit (U.S. gal/min): All spool control valves externally mounted remote to the hydraulic tank. Piston-type hydraulic pump with capacity (discharge flow) of 62.3 US gpm at rated engine rpm.
  • Relief valve setting (psi): 4,177
  • Relief valve setting (kg/cm^2): 294
  • Relief valve setting (MPa): 28.8
  • Control valve: 3-spool control valve for power angle tilt dozer

  • Hydraulic oil capacity (refill)

    • Power angle tilt dozer (US gal): 40.7
    • Power angle tilt dozer (L): 154

  • Number of cylinders

    • Blade tilt /1 (in): 5.1
    • Blade tilt /1 (mm): 130
    • Blade lift / 2 (in): 4.7
    • Blade lift / 2 (mm): 120
    • Blade angle / 2 (in): 4.3
    • Blade angle / 2 (mm): 110

    • Positions

      • Blade lift: Raise, hold, lower, and float
      • Blade tilt: Right, hold, and left
      • Blade angle: Right, hold, and left
      • Ripper lift: Raise, hold and lower

  • Hydraulic cylinders

    • Hydraulic cylinders: Double-acting, piston type

  • Engine Model: Komatsu SAA6D114E-6*
  • Dozers type: 4-cycle, water-cooled, direct injection
  • Aspiration: Komatsu Variable Geometry Turbocharged, air-to-air aftercooled, cooled EGR
  • Number of cylinders: 6
  • Bore x stroke (in): 4.5 x 5.7
  • Bore x stroke (mm): 114 x 144.5
  • Piston displacement (L): 8.85
  • Piston displacement (in^3): 540
  • Governor: All-speed and mid-range, electronic
  • Footnote: *EPA Tier 4 Final emissions certified

  • Horsepower

    • SAEJ1995 - Gross (kW): 179
    • SAEJ1995 - Gross (HP): 240
    • ISO 9249 / SAE J1349 - Net (HP): 237
    • ISO 9249 / SAE J1349 - Gross (kW): 177
    • Rated RPM: 2,100
    • Fan drive type: Hydraulic
    • Hydraulic fan at maximum speed - net (kW): 159
    • Hydraulic fan at maximum speed - net (HP): 213

  • Lubrication system

    • Filter: Full-flow
    • Method: Gear pump, force lubrication

  • Fuel tank (US gal): 116
  • Fuel tank (L): 439
  • Diesel Exhaust Fluid (DEF) tank (L): 20
  • Diesel Exhaust Fluid (DEF) tank (US gal): 5.3
  • Coolant (US gal): 14.4
  • Coolant (L): 54.5
  • Engine oil (US gal): 8.1
  • Engine oil (L): 30.5
  • Final drive (L): 10
  • Final drive (US gal): 2.6
  • Hydraulic tank (L): 154
  • Hydraulic tank (US gal): 40.7

  • Operator weight (approximate): Operating weight: Including PAT dozer, ROPS (ISO 3471) cab, operator, standard equipment, rated capacity of lubricant, coolant and full fuel tank.

  • Tractor weight

    • Tractor weight (kg): 21 500 - 21 800
    • Tractor weight (lbs): 48,061 - 49,604
    • Tractor weight inclusions: Including ROPS (ISO 3471) cab, U frame for PAT dozer, rated capacity of lubricant, coolant, full fuel tank, operator and standard equipment.

  • Operating weight

    • Operating weight (lbs): 50,927 - 52,690
    • Operating weight (kg): 23 100 - 23 900

  • Steering system features: PCCS joystick control for all directional movements. Pushing the joystick forward results in forward machine travel, while pulling it backward reverses the machine. Simply tilt the joystick to the left or right to make a turn. Tilting the joystick fully to the left or right activates counter-rotation. HST eliminates steering clutches and brakes, providing smooth, powerful turns. Fully electronic control enables smooth operation. The PCCS utilizes shift buttons to increase and decrease speed.
  • Minimum turning radius (in): 122 - 130
  • Minimum turning radius (m): 3.1 - 3.3

  • Final drive features: In-shoe mounted axial piston type travel motors with integrated two-stage planetary gear reduction. Compact in-shoe mount can reduce risk of damage by debris. Bolt-on sprocket for easy displacement.
Metric Imperial (US)
  • Air cleaner, double element with dust indicator
  • Air suspension seat with operator presence sensing system
  • Alternator, 24 V/90 A
  • Backup alarm
  • Batteries, 2 x 12 V/140 Ah
  • Closed Engine hood
  • Color monitor, Liquid Crystal Display (LCD)
  • Decelerator/brake pedal (Single pedal)
  • Engine intake precleaner (Auto eject)
  • Expansion tank
  • Fuel prefilter with water separator
  • High mount foot rests
  • Hitch type drawbar
  • Hydraulically driven cooling fan with clean mode
  • Komatsu Diesel Particulate Filter (KDPF) with curved exhaust pipe
  • Locks, filler caps and covers
  • Radiator mask, swing up
  • Rear view monitor system
  • Starting motor, 11 kW/24 V
  • Steering system: HST system
  • Tie-offs
  • Track roller guard, center and end section
  • Track shoe assembly
    —Parallel Link Undercarriage System (PLUS) link
    24" single grouser shoe (EX)
    30" single grouser shoe (PX)
    36" single grouser shoe (PX wide)
  • Underguards:
    Oil pan and hydraulic pumps

    ROPS Cab*

  • Air conditioner (A/C)
  • AUX-injack
  • Cab accessories
    —12 V x 2 power supply
    —Cup holder
    —Rear view mirror
  • Front pull hook
  • LED lights
  • Multifunction Audio
  • Work lamps (Front 4, rear 2)

* Dozer assembly and rear mounted equipment are not included in base machine standard equipment
** Cab meets ROPS (ISO 3471) and FOPS (ISO 3449) Level 2 standards

  • Air cleaner, double element with dust indicator
  • Air suspension seat with operator presence sensing system
  • Alternator, 24 V/90 A
  • Backup alarm
  • Batteries, 2 x 12 V/140 Ah
  • Closed Engine hood
  • Color monitor, Liquid Crystal Display (LCD)
  • Decelerator/brake pedal (Single pedal)
  • Engine intake precleaner (Auto eject)
  • Expansion tank
  • Fuel prefilter with water separator
  • High mount foot rests
  • Hitch type drawbar
  • Hydraulically driven cooling fan with clean mode
  • Komatsu Diesel Particulate Filter (KDPF) with curved exhaust pipe
  • Locks, filler caps and covers
  • Radiator mask, swing up
  • Rear view monitor system
  • Starting motor, 11 kW/24 V
  • Steering system: HST system
  • Tie-offs
  • Track roller guard, center and end section
  • Track shoe assembly
    —Parallel Link Undercarriage System (PLUS) link
    610 mm single grouser shoe (EX)
    760 mm single grouser shoe (PX)
    915 mm single grouser shoe (PX wide)
  • Underguards:
    Oil pan and hydraulic pumps

    ROPS Cab*

  • Air conditioner (A/C)
  • AUX-injack
  • Cab accessories
    —12 V x 2 power supply
    —Cup holder
    —Rear view mirror
  • Front pull hook
  • LED lights
  • Multifunction Audio
  • Work lamps (Front 4, rear 2)

* Dozer assembly and rear mounted equipment are not included in base machine standard equipment
** Cab meets ROPS (ISO 3471) and FOPS (ISO 3449) Level 2 standards

Metric Imperial (US)
  • Hydraulics for ripper (EXI)
  • Long drawbar
  • Scoop holder
  • Tool kit
  • Track roller guard, full length
  • Hydraulics for ripper (EXI)
  • Long drawbar
  • Scoop holder
  • Tool kit
  • Track roller guard, full length

Technology that works as hard as you do

Select continent

Telematics

Telematics data can drive results for business operations, but only when you can collect and analyze it efficiently. Get the insights that can benefit your bottom line.

technology-image

Infographic

slant nose dozer, infographic, line of sight, low resolution for on-screen use, construction, layout, design, D71PX-24, D71PX D71PX-24 Slant Nose Dozer Infographic

Find what works for you

Used equipment Used equipment
Rental Rental
Dealer locator Dealer locator
Parts information Parts information