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Mid-size dozer

D61EXi-24

  • Horsepower 125 kW @ 2 200 rpm 168 HP @ 2,200 rpm
  • Operating weight 18 640 kg 41,094 lbs.
  • Blade capacity 3.37 m³ 4.41 yd³

A workhorse for your fleet

Every dozer fleet is built on the workhorses … versatile, powerful machines you rely on day after day, year after year. This dozer was designed from the ground up to fill that role. The Tier 4 Final engine and electronically controlled hydrostatic transmission keep fuel use remarkably low without sacrificing power. A standard parallel link undercarriage system features rotary bushings engineered to extend wear life and lower repair/maintenance costs. In addition to economy and power modes, a high engine rpm H mode helps operators maintain ground speed while operating under heavy loads.

  • Get new operators up to speed quickly
  • Go from mass ex to finished grading faster than ever
  • Fully integrate 3D design data into your machines
  • Empower operators to work efficiently, pass after pass

Features and benefits

Learns as it works

With proactive dozing control, even your less experienced operators can automatically cut/strip from existing terrain. The dozer measures the terrain it tracks over and uses that data to plan the next pass. Can improve productivity by up to 60% versus previous generation.

Spreads fill material automatically

Lift layer control automatically lets your operators spread fill from existing terrain with the press of a button. The dozer measures the terrain it tracks over and uses the data it gathers to plan the next pass. Attain up to double your production and achieve consistent layers for compaction quality.

Levels material even during rough dozing

Tilt steering control automatically tilts the blade to maintain straight travel during rough dozing. Reduces operator steering input by up to 80%.

Quick surface creation

Operators can create a temporary design surface with the press of a button. Combined with other iMC 2.0 functions, your crew can begin stripping or spreading using automated input while waiting for the finish grade model.

Close the operator skill gap

Machine logic allows the dozer to continuously learn the terrain and make calculated decisions for the next pass. Intelligent Machine Control helps lessen the skill gap between new and experienced operators.

Advanced machine control

In select situations — auto stripping, rough dozing, spreading, advanced finish grading — operators can opt for nearly 100% machine control auto usage. They can even apply automatic control without having a 3D model.

A machine that learns from the operator

Automatic functions give the dozer the ability to learn from operator's blade input, resulting in more adaptability, easier operation and less reliance on operator input.

Outstanding blade response for finish grading

To deliver unparalleled grading performance, iMC enables the dozer to look ahead at grade transitions and alter the blade angle accordingly.

Specifications for D61EXi-24

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US system Metric
Engine
Model Komatsu SAA6D107E-3*
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 107 x 124 mm
Piston displacement 6.69 L
Governor All-speed and mid-range, electronic
Horsepower:  
SAE J1995 - Gross 127 kW
ISO 9249 / SAE J1349 - Net 125 kW
Hydraulic fan at maximum speed 113 kW
Rated rpm 2 200 rpm
Fan drive type Hydraulic
Lubrication system:  
Method Gear pump, force lubrication
Filter Full-flow
*EPA Tier 4 Final emissions certified  
Model Komatsu SAA6D107E-3*
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 4.21 x 4.88 in
Piston displacement 408 in³
Governor All-speed and mid-range, electronic
Horsepower:  
SAE J1995 - Gross 170 HP
ISO 9249 / SAE J1349 - Net 168 HP
Hydraulic fan at maximum speed 152 HP
Rated rpm 2,200 rpm
Fan drive type Hydraulic
Lubrication system:  
Method Gear pump, force lubrication
Filter Full-flow
*EPA Tier 4 Final emissions certified  
Hydrostatic transmission

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.

Travel speed (quick shift mode)* Forward Reverse
1st 0-3.4 kph 0-4.1 kph
2nd 0-5.6 kph 0-6.5 kph
3rd 0-9.0 kph 0-9.0 kph
Travel speed (variable mode) 0-9.0 kph 0-9.0 kph

*Quick shift speeds are adjustable in the monitor.

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.

Travel speed (quick shift mode)* Forward Reverse
1st 0-2.1 mph 0-2.5 mph
2nd 0-3.5 mph 0-4.0 mph
3rd 0-5.6 mph 0-5.6 mph
Travel speed (variable mode) 0-5.6 mph 0-5.6 mph

*Quick shift speeds are adjustable in the monitor.

Final drive

In-shoe mounted axial piston type travel motors with integrated two-stage planetary gear reduction. Compact in-shoe mount reduces risk of damaged by debris. Bolt-on sprocket for easy displacement.

In-shoe mounted axial piston type travel motors with integrated two-stage planetary gear reduction. Compact in-shoe mount reduces risk of damaged by debris. Bolt-on sprocket for easy displacement.

Steering system

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 control. The PCCS utilizes shift buttons to increase and decrease speed.

Minimum turning radius 2.1 m

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 control. The PCCS utilizes shift buttons to increase and decrease speed.

Minimum turning radius 83 in
Undercarriage

Suspension: Oscillating-type with equalizer bar and pivot shafts

Track roller frame: Monocoque, large section, durable construction

Rollers and idlers: Lubricated track rollers

Lubricated tracks
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.

Number of track rollers (each side) 8
Type of shoes (standard) Single grouser
Number of shoes (each side) 46
Grouser height 57.5 mm
Shoe width (standard) 600 mm
Ground contact area 37 980 cm²
Ground pressure
(with dozer, ROPS canopy):
43.37 kPa
0.44 kgf/cm²
Track gauge 1 900 mm
Length of track on ground 3 165 mm

Suspension: Oscillating-type with equalizer bar and pivot shafts

Track roller frame: Monocoque, large section, durable construction

Rollers and idlers: Lubricated track rollers

Lubricated tracks
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.

Number of track rollers (each side) 8
Type of shoes (standard) Single grouser
Number of shoes (each side) 46
Grouser height 2.3 in
Shoe width (standard) 24 in
Ground contact area 5,887 in²
Ground pressure
(with dozer, ROPS canopy):
6.29 psi
Track gauge 6 ft. 3 in
Length of track on ground 10 ft. 5 in
Service refill capacities
Coolant 45 L
Fuel tank 372 L
Engine oil 27 L
Hydraulic tank 101 L
Final drive (each side) 8.1 L
DEF tank 20.6 L
Coolant 11.9 US gal
Fuel tank 98.3 US gal
Engine oil 7.2 US gal
Hydraulic tank 26.7 US gal
Final drive (each side) 2.2 US gal
DEF tank 5.4 US gal
Operating weight (approximate)
Tractor weight:
Including ROPS (ISO 3471) cab, C frame for PAT dozer, rated capacity of lubricant, coolant, full fuel tank, operator and standard equipment.
17 530 kg
Operating weight:
Including PAT dozer, ROPS (ISO 3471) cab, operator, standard equipment, rated capacity of lubricant, coolant and full fuel tank.
18 520 kg
Tractor weight:
Including ROPS (ISO 3471) cab, C frame for PAT dozer, rated capacity of lubricant, coolant, full fuel tank, operator and standard equipment.
38,911 lbs.
Operating weight:
Including PAT dozer, ROPS (ISO 3471) cab, operator, standard equipment, rated capacity of lubricant, coolant and full fuel tank.
41,094 lbs.
Hydraulic system

Closed-center Load Sensing System (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.

Hydraulic control unit:
All spool control valves externally mounted remote to the hydraulic tank. Piston-type hydraulic pump with capacity (discharge flow) of 171 ltr/min / 45 U.S. gal/min at rated engine rpm.

Relief valve setting 280 kg/cm² 27.4MPa
Hydraulic cylinders Double-acting, piston type
Hydraulic cylinders / Number of cylinders Bore
Blade lift / 2 100 mm
Blade tilt / 1 120 mm
Blade angle / 2 110 mm
Hydraulic oil capacity (refilling):  
Power angle tilt dozer 101 L
Control valves:  
3-spool control valve for Power Angle Tilt dozer  
Positions:  
    Blade lift Raise, hold, lower, and float
    Blade tilt Right, hold, and left
    Blade angle Right, hold, and left
Additional control valve required for ripper  
Positions:  
    Ripper lift Raise, hold, and lower

Closed-center Load Sensing System (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.

Hydraulic control unit:
All spool control valves externally mounted remote to the hydraulic tank. Piston-type hydraulic pump with capacity (discharge flow) of 171 L/min / 45 US gpm at rated engine rpm.

Relief valve setting 3,974 psi
Hydraulic cylinders Double-acting, piston type
Hydraulic cylinders / Number of cylinders Bore
Blade lift / 2 4 in
Blade tilt / 1 5 in
Blade angle / 2 4 in
Hydraulic oil capacity (refilling):  
Power angle tilt dozer 26.7 US gal
Control valves:  
3-spool control valve for Power Angle Tilt dozer  
Positions:  
    Blade lift Raise, hold, lower, and float
    Blade tilt Right, hold, and left
    Blade angle Right, hold, and left
Additional control valve required for ripper  
Positions:  
    Ripper lift Raise, hold, and lower
  • Air cleaner, double element with dust indicator
  • Alternator, 90 ampere/24V
  • Backup alarm
  • Batteries, 200 Ah/2 x 12V
  • Battery disconnect switch
  • Blade lift cylinders
  • Color monitor, LCD
  • Curved exhaust pipe
  • Decelerator pedal (single pedal)
  • Engine hood
  • Engine intake centrifugal precleaner
  • Engine, swing open side cover
  • Engine shutdown secondary switch
  • Fluid sampling ports
  • Front pull hook
  • High mount foot rests
  • Horn, warning
  • Hydraulic driven radiator cooling fan with reverse clean mode
  • Hydraulics for rear equipment
  • intelligent Machine Control 2.0
  • KOMTRAX 
  • Komatsu Diesel Particulate Filter (KDPF)
  • Locks, filler caps and covers
  • Radiator mask, heavy-duty, swing up
  • Radiator reserve tank
  • Remote mounted equalizer bar greasing
  • ROPS cab**
    • Air conditioner
    • Cab accessories
      • 12V power supply (2 ports)
      • Cup holder
      • Rearview mirror
      • Rear view monitoring (1 camera)
      • Bluetooth/USB compatible radio with remote AUX plug (3.5 mm)
      • 76 dBA
    • LED worklights
  • Seat, air suspension, fabric, heated low back, headrest
  • Seat belt, 76 mm 3", retractable
  • Seat belt indicator
  • Sealed electrical connectors
  • Side-by-side rear mounted cooling package
  • Starting motor, 5.5 kW/24V
  • Steering system, hydrostatic
  • Tie off points standard (ISO 14567)
  • Track roller guards, center and end sections
  • Track shoe assembly
    – Heavy-Duty lubricated rotary bushing (PLUS) track
    • 610 mm single grouser shoe (EX)
    • 860 mm single grouser shoe (PX)
  • Transmission with variable and customizable quickshift
  • Transmission, hydrostatic
  • Underguards, heavy duty
    • Engine
    • Transmission
  • Variable Geometry Turbocharger (VGT)
  • Water separator

* Dozer assembly and rear mounted equipment are not included in base machine standard equipment

** Cab meets ROPS and FOPS Level 2 standards

  • Air cleaner, double element with dust indicator
  • Alternator, 90 ampere/24V
  • Backup alarm
  • Batteries, 200 Ah/2 x 12V
  • Battery disconnect switch
  • Blade lift cylinders
  • Color monitor, LCD
  • Curved exhaust pipe
  • Decelerator pedal (single pedal)
  • Engine hood
  • Engine intake centrifugal precleaner
  • Engine, swing open side cover
  • Engine shutdown secondary switch
  • Fluid sampling ports
  • Front pull hook
  • High mount foot rests
  • Horn, warning
  • Hydraulic driven radiator cooling fan with reverse clean mode
  • Hydraulics for rear equipment
  • intelligent Machine Control 2.0
  • KOMTRAX 
  • Komatsu Diesel Particulate Filter (KDPF)
  • Locks, filler caps and covers
  • Radiator mask, heavy-duty, swing up
  • Radiator reserve tank
  • Remote mounted equalizer bar greasing
  • ROPS cab**
    • Air conditioner
    • Cab accessories
      • 12V power supply (2 ports)
      • Cup holder
      • Rearview mirror
      • Rear view monitoring (1 camera)
      • Bluetooth/USB compatible radio with remote AUX plug (3.5 mm)
      • 76 dBA
    • LED worklights
  • Seat, air suspension, fabric, heated low back, headrest
  • Seat belt, 76 mm 3", retractable
  • Seat belt indicator
  • Sealed electrical connectors
  • Side-by-side rear mounted cooling package
  • Starting motor, 5.5 kW/24V
  • Steering system, hydrostatic
  • Tie off points standard (ISO 14567)
  • Track roller guards, center and end sections
  • Track shoe assembly
    – Heavy-Duty lubricated rotary bushing (PLUS) track
    • 24" single grouser shoe (EX)
    • 34" single grouser shoe (PX)
  • Transmission with variable and customizable quickshift
  • Transmission, hydrostatic
  • Underguards, heavy duty
    • Engine
    • Transmission
  • Variable Geometry Turbocharger (VGT)
  • Water separator

* Dozer assembly and rear mounted equipment are not included in base machine standard equipment

** Cab meets ROPS and FOPS Level 2 standards

  • Dozer assembly
  • Drawbar, long type
  • Track roller guard, full length

Multi-shank ripper

  • Weight: 1757 kg
  • Beam length: 2170 mm
  • Maximum lift above ground: 560 mm
  • Maximum digging depth: 665 mm
  • Dozer assembly
  • Drawbar, long type
  • Track roller guard, full length

Multi-shank ripper

  • Weight: 3,874 lb
  • Beam length: 7'1"
  • Maximum lift above ground: 1'8"
  • Maximum digging depth: 2'2"
Support you can count on

Technology that works as hard as you do

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