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Komatsu D37EX-24 SMALL DOZERS

Komatsu D37EX-24 SMALL DOZERS

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Last Updated : 2019-04-19
BladeCapacityMax 2.49
BladeCapacityMin 2.49
Horsepower 89 @2200 rpm
OperatingWeightMax 19842
OperatingWeightMin 19842
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Komatsus New Emission Regulations-compliant Engine

New regulations effective in 2014 require the reduction of NOx emissions. In addition to refining the U.S. EPA Tier 4 Interim technologies, Komatsu developed a new Selective Catalytic Reduction (SCR) device in-house.

Auto Idle Shutdown Function

Komatsu auto idle shutdown automatically shuts the engine down after idling for a set period of time to reduce unnecessary fuel consumption and exhaust emissions. The amount of time before the engine is shutdown can be easily programmed from 5 to 60 minutes.

HST with Electronic Control

The D37EX/PX-24 is equipped with Komatsu-designed HST that allows for Quick-Shift or variable speed selection. The HST consists of dual-path closed-circuits, with two variable displacement piston pumps and two variable displacement travel motors. Hydrostatic steering eliminates steering clutches and brakes, providing smooth, powerful turns. Fully electronic control provides complete automatic shifting and enables smooth control. Engine speed is controlled using an electronic fuel control dial.

Selectable Working Mode

P mode is the mode designed for powerful operation and maximum production. E mode is designed for general dozing applications, providing adequate speed and power, while saving energy. For fuel reduction and energy savings, the monitor panel allows the operator to easily switch between working modes, depending on working conditions.

Unrivaled Blade Visibility

The D37EX/PX-24 incorporates Komatsu's super-slant nose design. Komatsu's innovative design provides excellent blade visibility for improved machine control and increased efficiency and productivity.

Palm Command Control System (PCCS) Levers

Komatsu’s ergonomically designed PCCS handles create an operating environment with complete operator control.

Single Pedal (Decelerator/Brake Pedal) to be operated for Speed Control, during Operation

Machine operation is simple because brake function has been integrated into the decelerator pedal. Machine travel speed can be controlled using one pedal. The pedal function can be changed by a mode selector switch.

Large Multi-Lingual High Resolution LCD Monitor

A large, user-friendly color monitor provides easy-tounderstand information for the operator. Excellent screen visibility is achieved with a high resolution LCD monitor that is easy to read at various angles and lighting conditions. Simple and easy-to-operate switches and function keys facilitate multi-function operations. The monitor displays data in 26 languages.

Energy Saving Operation

Ecology guidance

In order to support efficient operation, the following four messages are displayed for fuel saving operation. These can be displayed by the operator, if desired.

  1. Avoid Excessive Engine Idling
  2. Use Economy Mode to Save Fuel
  3. Avoid Hydraulic Relief Pressure
  4. Avoid Over Load

Ecology gauge

To help the operator to perform in an environmentally friendly way and minimize energy consumption, an easy-to-read “Ecology gauge” is displayed on the left of the multi-monitor screen.

Fuel consumption display

Average fuel consumption during the day is displayed and updated every 10 seconds.

Additional Operator Convenience Equipment

Rear view monitor system

On the large LCD color monitor, the operator can view, through one camera, areas directly behind the machine. This camera can be synchronized with reverse operation.

Secondary engine shutdown switch

A new secondary switch has been added at the side of the front console to shut down the engine in an emergency.

PAT Dozer with Adjustable Pitch

A power angle power tilt dozer blade with adjustable blade pitch system is available on the D37EX/PX-24. The hydraulic blade tilt and angling function expands versatility and productivity in a variety of applications and manually adjustable blade pitch.

Rear, hydraulically-driven, swing-up fan

The D37EX/PX-24 utilizes a swing-up fan with a gas strut-assisted lift system to provide easy access to the (side-by-side) radiator, oil cooler and charge air cooler. The hydraulic fan has a cleaning mode which enables the fan to rotate in the reverse direction to help clear off objects that are restricting air flow.

Modular design

One of the design goals behind the creation of the D37EX/PX-24 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 rigidity and strength.

Parallel Link Undercarriage System (PLUS)

Komatsu's PLUS rotating bush design provides less downtime, longer wear, and 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.

Easy Maintenance

Planned maintenance and daily checks are the only way to ensure long service life from equipment. That’s why Komatsu designed the D37EX/PX-24 with conveniently located maintenance points to make necessary inspections and maintenance quick and easy.

Robust Guarding And Attachments

Komatsu offers a full guarding package to help protect your machine and operator in severe applications.

Engine

Model
Komatsu SAA4D95LE-7*
Type
4-cycle, watercooled, direct injection
Aspiration
Variable flow, turbocharged, air-to-air aftercooled
Number of cylinders
4
Bore x stroke 95 mm x 115 mm 3.75" x 4.52"
Piston displacement 3.26 ltr 199 in³
Governor
All-speed, electronic
Horsepower:

SAE J1995 - Gross 67 kW 91 HP
ISO 9249 / SAE J1349 - Net 66 kW 89 HP
Rated rpm
2200 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 5.3 km/h / 8.5 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
0–3.4 km/h
0–2.5 mph
0–4.1 km/h
2nd 0–3.5 mph
0–5.6 km/h
0–4.0 mph
0–6.5 km/h
3rd 0–5.3 mph
0–8.5 km/h
0–5.3 mph
0–8.5 km/h
Travel speed
(variable mode)
Forward Reverse

0–5.3 mph
0–8.5 km/h
0–5.3 mph
0–8.5 km/h

*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 damage by debris. Bolt-on sprocket ring with triple labyrinth seal design.

Steering System

Palm Command Control System (PCCS) joystick control for all directional movements. Pushing the joystick forward results in forward machine travel, while pulling it back 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* 2.1 m
83"

*As measured by track marks on the ground at pivot turn.

Undercarriage

Suspension
Rigid track frame
Track roller frame
Monocoque, large section, durable construction
Rollers and idlers
Lubricated track rollers
Sealed and lubricated track
Track tension is easily adjusted with grease gun.
Number of track rollers (each side)
6
Number of carrier rollers (each side)
1
Type of shoes (standard)
Single grouser
Number of shoes (each side)
41
Grouser height 47 mm 1.9"
Shoe width (standard) 460 mm 18"
Ground contact area 20516 cm² 3,180 in²
Ground pressure
(with standard shoe)
(ISO 16754)
38.3kPa
0.39 kgf/cm²
5.56 psi
Track gauge 1570 mm 5'2"
Length of track on ground 2230 mm 7'4"

Service Refill Capacities

Coolant 34 ltr 9.0 U.S. gal
Fuel tank 190 ltr 50.2 U.S. gal
Engine oil 11 ltr 2.9 U.S. gal
Hydraulic tank 64 ltr 17 U.S. gal
Final drive (each side) 3.5 ltr 0.9 U.S. gal
Diesel Exhaust Fluid (DEF) tank 10 ltr 2.6 U.S. gal

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.
7940 kg 17,505 lb
Operating weight:
Operating weight: Including power angle tilt dozer,
ROPS cab, operator, standard equipment, rated
capacity of lubricant, coolant, and full fuel tank.
9000 kg 19,842 lb

Hydraulic System

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

Model
Komatsu SAA4D95LE-7*
Type
4-cycle, watercooled, direct injection
Aspiration
Variable flow, turbocharged, air-to-air aftercooled
Number of cylinders
4
Bore x stroke 95 mm x 115 mm 3.75" x 4.52"
Piston displacement 3.26 ltr 199 in³
Governor
All-speed, electronic
Horsepower:

SAE J1995 - Gross 67 kW 91 HP
ISO 9249 / SAE J1349 - Net 66 kW 89 HP
Rated rpm
2200 rpm
Fan drive type
Hydraulic
Lubrication system:

Method
Gear pump, force lubrication
Filter
Full-flow
*EPA Tier 4 Final emissions certified


Travel speed
(quick shift mode)*
Forward Reverse
1st 0–2.1 mph
0–3.4 km/h
0–2.5 mph
0–4.1 km/h
2nd 0–3.5 mph
0–5.6 km/h
0–4.0 mph
0–6.5 km/h
3rd 0–5.3 mph
0–8.5 km/h
0–5.3 mph
0–8.5 km/h
Travel speed
(variable mode)
Forward Reverse

0–5.3 mph
0–8.5 km/h
0–5.3 mph
0–8.5 km/h

Minimum turning radius* 2.1 m
83"

Suspension
Rigid track frame
Track roller frame
Monocoque, large section, durable construction
Rollers and idlers
Lubricated track rollers
Sealed and lubricated track
Track tension is easily adjusted with grease gun.
Number of track rollers (each side)
6
Number of carrier rollers (each side)
1
Type of shoes (standard)
Single grouser
Number of shoes (each side)
41
Grouser height 47 mm 1.9"
Shoe width (standard) 460 mm 18"
Ground contact area 20516 cm² 3,180 in²
Ground pressure
(with standard shoe)
(ISO 16754)
38.3kPa
0.39 kgf/cm²
5.56 psi
Track gauge 1570 mm 5'2"
Length of track on ground 2230 mm 7'4"

Coolant 34 ltr 9.0 U.S. gal
Fuel tank 190 ltr 50.2 U.S. gal
Engine oil 11 ltr 2.9 U.S. gal
Hydraulic tank 64 ltr 17 U.S. gal
Final drive (each side) 3.5 ltr 0.9 U.S. gal
Diesel Exhaust Fluid (DEF) tank 10 ltr 2.6 U.S. gal

Tractor weight:
Including ROPS cab, U frame for power angle
tilt dozer, rated capacity of lubricant, coolant,
full fuel tank, operator, and standard equipment.
7940 kg 17,505 lb
Operating weight:
Operating weight: Including power angle tilt dozer,
ROPS cab, operator, standard equipment, rated
capacity of lubricant, coolant, and full fuel tank.
9000 kg 19,842 lb

Relief valve setting 27.4 MPa / 280 kg/cm² 3,974 psi
Hydraulic cylinders
Double-acting, piston type
Number of cylinders: Bore Bore
Blade lift / 2 75 mm 3.0"
Blade tilt / 1 90 mm 3.5"
Blade angle / 2 80 mm 3.1"
Hydraulic oil capacity (refill):

Power angle tilt dozer 64 ltr 17 U.S. 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

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