- 39,441 lbs Operating Weight
- 168 @2200 rpm Horsepower
- 4.5 yd³ Blade Capacity
Introducing the Next Generation of Machine Control
Intelligent Machine Control machines have the following advantages over dozers with external grade control systems.
Automated operation from rough dozing to finish grade.
New dozing mode, load control performance features.
Standard factory installed integrated system.
- No Cables
No coiled cables between machine and blade.
- No Climbing
GNSS antenna and mast removed from blade.
- No Connections
No daily connections required between machine and blade.
Automated Blade Control, from Rough Dozing to Finish Grade. Straight to Grade.
- Blade moves to target surface until load reaches a preset level.
- The blade automatically raises to minimize track slip.
- Should the load decrease, blade will lower to re-load blade to an optimum level.
Cab Top GNSS Antenna
No blade mounted GNSS antenna(s), cables to worry about damaging with cab top GNSS antenna. Reduced risk of theft due to low visibility as viewed from ground level.
The D61i-23 incorporates new proprietary engine and hydrostatic transmission pump control technology to improve operational efficiency and reduce fuel consumption to levels lower than a conventional HST control system can obtain. This Komatsu exclusive feature reduces fuel consumption by up to 10% in P mode in demanding working conditions and up to 20% in E mode under lighter load conditions as compared to the prior model.
Powerful turns under various work conditions are achieved with the HST transmission, even under load. Counter-rotation is available for minimum turning radius, providing excellent maneuverability in tight spots.
Hydraulically-Driven Swing-up Fan
The D61i-23 utilizes a swing-up fan with a gas strut-assisted lift locking system to provide easy access to the (side-by-side) radiator, oil cooler, and charge air cooler. The swing-up feature makes it easier to access cooling cores. The hydraulic fan has a “cleaning” mode. The fan rotates in the reverse direction and helps to clear off objects in front of the cooling areas.
KDPF Regeneration Notification
The LCD color monitor panel provides the operator with the status of the KDPF regeneration without interfering with daily operation. When the machine initiates active regeneration, an icon will notify the operator.
One of the design goals behind the creation of the D61i-23 was to manufacture a more durable machine. This was achieved by reducing component complexity and using a strong modular design for increased serviceability and durability. Steel castings reduce the number of welds, improving C-frame rigidity and strength.
Parallel Link Undercarriage System PLUS
Komatsu's new Parallel Link Undercarriage System (PLUS) provides less downtime plus longer wear life with up to 40% lower undercarriage maintenance costs. Rotating bushings eliminate the cost and downtime for bushing turns, and strengthened rollers and links increase wear life up to two times. With PLUS, individual links can be replaced with common track tools.
Power Angle Tilt (PAT) Dozer With Adjustable Pitch
A Power Angle Tilt dozer blade with highly durable boxstructure frame is available for the EX and PX machines. The hydraulic blade tilt and angling functions and manually adjustable blade pitch expand versatility and productivity in a variety of applications. This PAT dozer assembly is tested to stringent test standards.
Selectable Working Mode
Working mode E is for general dozing applications with adequate speed and power while reducing fuel consumption and CO2. Working mode P is aimed at powerful operation and maximum production. The working mode is easily switched on the monitor panel, depending on the work at hand.
■ E mode (Economy mode)
With E mode, the engine outputs enough power for most general dozing applications without delivering unnecessary power. This mode allows for energy-saving operation and is suitable for work on ground where the machine may experience shoe slip or applications not requiring large power such as downhill dozing, leveling and light-load work.
■ P mode (Power mode)
With P mode, the engine outputs its full power, allowing the machine to perform large production, heavy-load, or uphill work.
Single Pedal (Decelerator/Brake Pedal) to be operated for Speed Control, during Operation
Machine operation becomes simple because brake function has been integrated into decelerator pedal. Machine moving speed including/excluding engine speed can be controllable by using only one pedal of decelerator/brake pedal. Operation of pedal function can be changed by the mode selector switch.
The pedal can decelerate engine RPMS and vehicle travel speed. Normally can be used for all applications.
The pedal can decelerate vehicle travel speed, keeping high engine revolution. This mode can be helpful to keep work equipment controllability and/or force, even during braking.
Stroke Sensing Hydraulic Cylinders
Robust stroke sensing hydraulic cylinders employ proven Komatsu sensor technologies for accurate finish grade performance. Stroke sensing angle cylinder allows machine control system to know the angle of the blade.
Variable and Customizable Quickshift Modes
The D61i-23 offers two gearshift modes: Variable and the new Customizable Quick shift. Variable shift mode provides 20 incremental speed settings for the operator, while the Customizable Quick shift provides 3 speed settings; all can be adjusted in the monitor to obtain the right speed for different operator preferences.
|Type||4-cycle, water-cooled, direct injection|
|Aspiration||Komatsu variable geometry Turbocharged, air-to-air aftercooled|
|Number of cylinders||6|
|Bore x stroke||4.21" x 4.88"||107 mm x 124 mm|
|Piston displacement||408 in³||6.69 ltr|
|Governor||All-speed and mid-range, electronic|
|SAE J1995 - Gross||170 HP||127 kW|
|(ISO 14396||169 HP||126 kW|
|ISO 9249 / SAE J1349 - Net||168 HP||125 kW|
|Rated rpm||2200 rpm|
|Fan drive type||Hydraulic|
|Method||Gear pump, force lubricationn|
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 teeth for easy displacement.
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||3,974 psi||280 kg/cm²
|Hydraulic cylinders:||Number of cylinders||Bore|
|Hydraulic oil capacity (refilling):|
|Power angle tilt dozer||26.7 U.S. gal||101 ltr|
|3-spool control valve for Power Angle Tilt dozer|
|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|
|Ripper lift||Raise, hold, and lower|
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 km/h 0-2.1 mph||0-4.1 km/h 0-2.5 mph|
|2nd||0-5.6 km/h 0-3.5 mph||0-6.5 km/h 0-4.0 mph|
|3rd||0-9.0 km/h 0-5.6 mph||0-9.0 km/h 0-5.6 mph|
|Travel speed (variable mode)||0-9.0 km/h 0-5.6 mph||0-9.0 km/h 0-5.6 mph|
|*Quick shift speeds are adjustable in the monitor.|
Operating Weight APROXIMATE
|Tractor weight:||Including ROPS cab, U frame for power angle tilt dozer, rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment.|
|D61EXi-23||39,264 lb||17810 kg|
|Operating weight:||Including Power Angle Tilt dozer, ROPS cab, operator, standard equipment, rated capacity of lubricant, hydraulic control unit, coolant, and full fuel tank.|
|D61EXi-23||39,441 lb||17890 kg|
Service Refill Capacities
|Coolant||11.9 U.S. gal||45 ltr|
|Fuel tank||98.3 U.S. gal||372 ltr|
|Engine oil||7.2 U.S. gal||27 ltr|
|Hydraulic tank||26.7 U.S. gal||101 ltr|
|Final drive (each side)||2.2 U.S. gal||8.1 ltr|
Palm Command Control System (PCCS) joystick control for all
directional movements. Pushing the joystick forward results in
forward machine travel, while pulling it rearward 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.
Hydrostatic Transmission (HST) provides smooth powerful turns. Fully electronic control enables smooth control that can be adjusted in the monitor. The PCCS utilizes shift buttons to increase and decrease speed.
|Minimum turning radius (as measured by track marks on the ground at pivot turn.)||83"||2.1 m|
|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"||57.5 mm|
|Shoe width (standard)||34"||860 mm|
|Ground contact area||8,451 in²||54520 cm²|
(with dozer, ROPS canopy):
|4.87 psi||33.6 kPa|
|Track gauge||7'0"||2130 mm|
|Length of track on ground||10'5"||3161 mm|
- 3D GNSS intelligent Machine Control
- 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
- Decelerator pedal (single pedal)
- Engine hood
- Engine intake centrifugal precleaner
- Engine, swing open side cover
- Engine shutdown secondary switch
- Front pull hook
- High mount foot rests
- Horn, warning
- Hydraulic driven radiator cooling fan with reverse clean mode
- Hydraulics for rear equipment
- KOMTRAX® Level 4
- Komatsu Diesel Particulate Filter (KDPF)
- Komatsu Variable Geometry Turbocharger (KVGT)
- Locks, filler caps and covers
- Muffler with curved exhaust pipe
- Radiator mask, heavy-duty, swing up
- Radiator reserve tank
- ROPS cab**
- Air conditioner
- Cab accessories
--12V power supply (2 ports)
--Rear view monitoring (1 camera)
--AM/FM Radio w/remote AUX plug (3.5 mm)
- Work lights
--3 front, cab mounted
--2 rear, cab mounted
- 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
- Track roller guards, center and end sections
- Track shoe assembly
- Heavy-Duty lubricated rotary bushing (PLUS) track
- 600 mm / 24" single grouser shoe (EX)
- 860 mm / 34" single grouser shoe (PX)
- Transmission with Variable and Customizable Quickshift
- Transmission, hydrostatic
- Underguards, heavy duty
- 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 (for D61EXi/PXi):
1757 kg / 3,874 lb
- Beam length
2170 mm / 7'1"
- Maximum lift above ground
560 mm / 1'10"
- Maximum digging depth
665 mm / 2'2"