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Mid-size dozer

D65EX-18

  • Horsepower 162 kW @ 1 950 rpm 217 HP @ 1,950 rpm
  • Operating weight 20 697 - 22 133 kg 45,628 - 48,796 lbs.
  • Blade capacity 5.6 m³ 7.3 yd³

Torque converter dozers for your heavy jobs

Need an all-around workhorse designed for years of high productivity? The D65EX-18 is tough to beat. A large capacity outside push frame semi-U blade helps make it the backbone of your dozer fleet and includes extended wear life undercarriage 24” PLUS (Parallel Link Undercarriage System) rotating bushing tracks.

  • Engineered for powerful dozing
  • Excellent blade capacity
  • Quiet cab with smooth ride and great visibility
  • Automated blade control with iMC

Features and benefits

Custom build the dozer you need

All the dozers in the D65/85/155 family offer you outstanding power, economy and reliability. Customize yours with the blade (straight, Semi-U, Sigmadozer and Full U (D155 only)), track shoe width and horsepower combo best suited to your particular application.

Helps minimize fuel use

An advanced Tier 4 engine offers you a potent combo of power and fuel efficiency. An auto idle shutdown, adjustable from 5-60 minutes, also helps cut fuel use and emissions.

Controls help fight operator fatigue

Operators will enjoy the palm command electronic control joysticks that fit the natural relaxed shape of their hands. Auto-shift or manual-shift modes are easily selected with one push of a button for precision with less fatigue over the course of a shift.

Smooth, powerful handling

Your operators can execute smooth powerful turns with the hydrostatic steering system. It transmits engine power to both tracks without power interruption and minimizes turning radius with counter-rotation while in neutral.

Long-lasting undercarriage

Get the most from your dozer. The Parallel Link Undercarriage System (PLUS) with rotating bushings delivers up to twice the life of our conventional undercarriage with no pin and bushing turn required. Parts wear evenly and last longer before needing replacement.

Work with fuel-efficient power

Seek maximum work efficiency with a lock-up torque converter. It determines the appropriate gear based on load and conditions. The lockup mechanism then automatically transfers engine power directly to the transmission, helping boost drive train efficiency.

intelligent Machine Control (iMC)

With automatic dozing, rough cut to finish grade, iMC-equipped machines make every pass count. Dozers “learn” operator blade input. In select situations, operators can opt for near-100% auto control. And, iMC helps new operators get up to speed quickly.

Help operators stay focused

Your operators perform best when they’re comfortable. That’s why they’ll love the air suspension seat with lumbar support and tilt. It’s easy for them to adjust to suit their needs, and electric heat helps them stay comfortable in the cold.

Specifications for D65EX-18

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US system Metric
Engine
Model Komatsu SAA6D114E-6*
Type 4-cycle, water-cooled, direct injection
Aspiration Komatsu variable geometry turbocharged, air-to-air aftercooled
Number of cylinders 6
Bore x stroke 114 x 144.5 mm
Piston displacement 8.85 L
Governor All-speed and mid-range, electronic
Horsepower:
SAE J1995 - Gross 164 kW
ISO 9249 / SAE J1349 - Net 162 kW
Rated rpm 1 950 rpm
Fan drive type Hydraulic
Lubrication system:
Method Gear pump, force lubrication
Filter Full-flow
*EPA Tier 4 Final emissions certified
Model Komatsu SAA6D114E-6*
Type 4-cycle, water-cooled, direct injection
Aspiration Komatsu variable geometry turbocharged, air-to-air aftercooled
Number of cylinders 6
Bore x stroke 4.49 x 5.69 in
Piston displacement 540 in³
Governor All-speed and mid-range, electronic
Horsepower:
SAE J1995 - Gross 220 HP
ISO 9249 / SAE J1349 - Net 217 HP
Rated rpm 1,950 rpm
Fan drive type Hydraulic
Lubrication system:
Method Gear pump, force lubrication
Filter Full-flow
*EPA Tier 4 Final emissions certified
Final Drive

Double-reduction final drive of spur and planetary gear sets to increase tractive effort and reduce gear tooth stresses for long final drive life. Segmented sprocket teeth are bolt-on for easy replacement.

Double-reduction final drive of spur and planetary gear sets to increase tractive effort and reduce gear tooth stresses for long final drive life. Segmented sprocket teeth are bolt-on for easy replacement.

Hydraulic System

Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.

Hydraulic control units:
All spool valves externally mounted beside the hydraulic tank. Piston type hydraulic pump with capacity (discharge flow) of 248 L/min 65.5 US gpm at rated engine rpm.

Relief valve setting 27.9 MPa / 285 kg/cm²
Control valves:
Spool control valves for SIGMADOZER® or straight tilt dozer
Positions:
Blade lift Raise, hold, lower, and float
Blade tilt Right, hold, and left
Rear attachment Raise, hold, and lower

Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.

Hydraulic control units:
All spool valves externally mounted beside the hydraulic tank. Piston type hydraulic pump with capacity (discharge flow) of 65.5 US gpm at rated engine rpm.

Relief valve setting 4,050 psi
Control valves:
Spool control valves for SIGMADOZER® or straight tilt dozer
Positions:
Blade lift Raise, hold, lower, and float
Blade tilt Right, hold, and left
Rear attachment Raise, hold, and lower
Service Refill Capacities
Fuel tank 415 L
DEF tank 23.5 L
Coolant 49 L
Engine 30.5 L
Torque converter, transmission, bevel gear, and steering system 48 L
Final drive (each side):
D65EX-18 non PAT 16.5 L
D65EX-18 with PAT 22 L
D65PX-18 22 L
D65WX-18 22 L
Fuel tank 109.6 US gal
DEF tank 6.2 US gal
Coolant 12.9 US gal
Engine 8.1 US gal
Torque converter, transmission, bevel gear, and steering system 12.7 US gal
Final drive (each side):
D65EX-18 non PAT 4.4 US gal
D65EX-18 with PAT 5.8 US gal
D65PX-18 5.8 US gal
D65WX-18 5.8 US gal
Steering System

Palm Command Control System (PCCS) lever controls for all directional movements. Pushing the PCCS lever forward results in forward machine travel, while pulling it rearward reverses the machine. Simply tilt the PCCS lever to left to make a left turn. Tilt it to the right for a right turn.

Hydrostatic Steering System (HSS) is powered by steering planetary units and a hydraulic pump and motor. Counterrotation turns are also available. Wet, multiple-disc, pedalcontrolled service brakes are spring-actuated and hydraulically released. Gear shift lock lever also applies parking brake.

Minimum turning radius:
D65EX-18 1.9 m
D65EX-18 with PAT 2.0 m
D65PX-18 2.2 m
D65WX-18 2.1 m

Palm Command Control System (PCCS) lever controls for all directional movements. Pushing the PCCS lever forward results in forward machine travel, while pulling it rearward reverses the machine. Simply tilt the PCCS lever to left to make a left turn. Tilt it to the right for a right turn.

Hydrostatic Steering System (HSS) is powered by steering planetary units and a hydraulic pump and motor. Counterrotation turns are also available. Wet, multiple-disc, pedalcontrolled service brakes are spring-actuated and hydraulically released. Gear shift lock lever also applies parking brake.

Minimum turning radius:
D65EX-18 6 ft. 3 in
D65EX-18 with PAT 6 ft. 7 in
D65PX-18 7 ft. 3 in
D65WX-18 6 ft. 11 in
TORQFLOW Transmission

Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 2-phase, torque converter with lockup clutch, and a planetary gear, multiple-disc clutch transmission which is electronically controlled, hydraulically actuated and force-lubricated for optimum heat dissipation. Shift lock lever and neutral safety switch.

Travel speed Forward Reverse
1st 3.7 kph 4.5 kph
2nd 5.6 kph 6.7 kph
3rdL 7.3 kph 8.7 kph
3rd 11.3 kph 13.6 kph

Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 2-phase, torque converter with lockup clutch, and a planetary gear, multiple-disc clutch transmission which is electronically controlled, hydraulically actuated and force-lubricated for optimum heat dissipation. Shift lock lever and neutral safety switch.

Travel speed Forward Reverse
1st 2.3 mph 2.8 mph
2nd 3.5 mph 4.2 mph
3rdL 4.5 mph 5.4 mph
3rd 7.0 mph 8.5 mph
Undercarriage
Suspension Oscillating equalizer bar and pivot shaft
Track roller frame Monocoque, large section, durable construction
Rollers and idlers Lubricated
Track shoes Parallel Link Undercarriage System (PLUS) with lubricated rotating bushings for extended system wear life and lower maintenance costs. Track tension is easily adjusted with grease gun.
Suspension Oscillating equalizer bar and pivot shaft
Track roller frame Monocoque, large section, durable construction
Rollers and idlers Lubricated
Track shoes Parallel Link Undercarriage System (PLUS) with lubricated rotating bushings for extended system wear life and lower maintenance costs. Track tension is easily adjusted with grease gun.
  • Air cleaner, double element with dust indicator
  • Alternator, 90 ampere/24V
  • Auto idle shutdown function
  • Backup alarm
  • Batteries, 200 Ah/2 x 12V
  • Battery disconnect switch
  • Blade lift cylinders
  • Color monitor, LCD 
  • Decelerator pedal
  • Engine hood
  • Engine intake centrifugal precleaner
  • Engine, gull-wing side covers
  • Engine shutdown secondary switch
  • Fenders
  • Front pull hook
  • High mount foot rests
  • Horn, warning
  • Hydraulic driven radiator cooling fan with reverse clean mode
  • Hydraulics for rear equipment
  • KOMTRAX® Level 5
  • Komatsu Diesel Particulate Filter (KDPF)
  • Komatsu Variable Geometry Turbocharger (KVGT)
  • Locks, filler caps and covers
  • Muffler with curved exhaust pipe
  • Oil pressure check ports for power train
  • Operator ID function
  • PM service connector
  • Radiator mask, heavy-duty, hinged, perorated
  • Radiator reserve tank
  • Rear cover
  • ROPS cab**
  • 75 dB operator ear noise level
  • Air conditioner
  •  Cab accessories
    --12V power supply (2 ports)
    --Cup holder
    --Rearview mirror
    --Rear view monitoring (1 camera)
    --AM/FM Radio w/remote AUX plug (3.5 mm)
  • Shovel holder
  • Work lights
    --2 front, hood mounted
    --2 front, cab mounted
    --1 rear, left fender mounted
    --2 rear, cab mounted
  • Seat, air suspension, fabric, heated low back, rotates 12.5° to right, headrest
  • Seat belt, 76 mm, retractable
  • Seat belt indicator
  • Sealed electrical connectors
  • Secondary engine shutoff switch
  • Starting motor, 11.0 kW
  • Steering system: Hydrostatic Steering System (HSS)
  • Torque converter with auto lock-up
  • Track roller guards, center and end sections
  • Track shoe assembly
  • Heavy-Duty lubricated rotary bushing (PLUS) track
  • 610 mm single grouser shoe (EX with outside mount blade) 
  • 760 mm single grouser shoe (WX with outside mount blade)
  • 915 mm single grouser shoe (PX with outside mount blade)
  • Transmission with auto/manual shift modes
  • Underguards, heavy duty
  • Hinged belly pan
  • Transmission
  • Water separator
  • Wide core cooling package 

* Dozer assembly and rear mounted equipment are not included in base machine standard equipment
** Cab meets OSHA/MSHA ROPS and FOPS Level 2 standards

  • Air cleaner, double element with dust indicator
  • Alternator, 90 ampere/24V
  • Auto idle shutdown function
  • Backup alarm
  • Batteries, 200 Ah/2 x 12V
  • Battery disconnect switch
  • Blade lift cylinders
  • Color monitor, LCD 
  • Decelerator pedal
  • Engine hood
  • Engine intake centrifugal precleaner
  • Engine, gull-wing side covers
  • Engine shutdown secondary switch
  • Fenders
  • Front pull hook
  • High mount foot rests
  • Horn, warning
  • Hydraulic driven radiator cooling fan with reverse clean mode
  • Hydraulics for rear equipment
  • KOMTRAX® Level 5
  • Komatsu Diesel Particulate Filter (KDPF)
  • Komatsu Variable Geometry Turbocharger (KVGT)
  • Locks, filler caps and covers
  • Muffler with curved exhaust pipe
  • Oil pressure check ports for power train
  • Operator ID function
  • PM service connector
  • Radiator mask, heavy-duty, hinged, perorated
  • Radiator reserve tank
  • Rear cover
  • ROPS cab**
  • 75 dB operator ear noise level
  • Air conditioner
  •  Cab accessories
    --12V power supply (2 ports)
    --Cup holder
    --Rearview mirror
    --Rear view monitoring (1 camera)
    --AM/FM Radio w/remote AUX plug (3.5 mm)
  • Shovel holder
  • Work lights
    --2 front, hood mounted
    --2 front, cab mounted
    --1 rear, left fender mounted
    --2 rear, cab mounted
  • Seat, air suspension, fabric, heated low back, rotates 12.5° to right, headrest
  • Seat belt, 3", retractable
  • Seat belt indicator
  • Sealed electrical connectors
  • Secondary engine shutoff switch
  • Starting motor, 24V
  • Steering system: Hydrostatic Steering System (HSS)
  • Torque converter with auto lock-up
  • Track roller guards, center and end sections
  • Track shoe assembly
  • Heavy-Duty lubricated rotary bushing (PLUS) track
  • 24" single grouser shoe (EX with outside mount blade) 
  • 30" single grouser shoe (WX with outside mount blade)
  • 36" single grouser shoe (PX with outside mount blade)
  • Transmission with auto/manual shift modes
  • Underguards, heavy duty
  • Hinged belly pan
  • Transmission
  • Water separator
  • Wide core cooling package 

* Dozer assembly and rear mounted equipment are not included in base machine standard equipment
** Cab meets OSHA/MSHA ROPS and FOPS Level 2 standards

  • Dozer assembly
  • Drawbar, long type
  • Hitch
  • Rear counterweight 850 kg
  • Straight tilt frame for use with allied blades
  • Topcon® Plug-N-Play bolt-on finishing kit
  • Track roller guard, full length
  • 560 mm single grouser HD (EX)
  • 760 mm extreme service shoes
  • 915 mm extreme service shoes

Multi-shank ripper (for D65EX/WX)

  • Weight
    1920 kg 
  • Beam length
    2170 mm 
  • Maximum lift above ground
    640 mm
  • Maximum digging depth
    590 mm 
  • Dozer assembly
  • Drawbar, long type
  • Hitch
  • Rear counterweight 1,870 lb
  • Straight tilt frame for use with allied blades
  • Topcon® Plug-N-Play bolt-on finishing kit
  • Track roller guard, full length
  • 22" single grouser HD (EX)
  • 30" extreme service shoes
  • 36" extreme service shoes

Multi-shank ripper (for D65EX/WX)

  • Weight
    4,230 lb
  • Beam length
    7'1"
  • Maximum lift above ground
    2'1"
  • Maximum digging depth
    1'11"
Support you can count on

Technology that works as hard as you do

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Komtrax for construction equipment is Komatsu’s state of the art remote monitoring system, helping you keep track of where your machines are and how much they are working. The system seamlessly gathers important data that can help you coach operators to improve efficiencies and productivity.

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