Komatsu D31E-20 Crawler dozers research
2025
Komatsu D31E-20 Crawler dozers Technical specifications
General
Engine model
S4D102E
Operating weight
6,290 kg
Max speed forward
6.6 kph
Operational specifications
Drive type
Komatsu HYDROSHIFT transmission
Engine
Displacement
3921 cu cm
Aspiration
Turbocharged
Number of cylinders
4
Net power
52.2 kw
Refill capacities
Final drives fluid cap
9.84 liters
Engine oil cap
14 liters
Undercarriage
Ground contact area
31522.23 cm3
Number of shoes per side
37
Ground pressure
0.41 bar
Number of track rollers per side
5
Track width
33.02 cm
Track gauge
1.46 m
Hydraulic system
Relief valve pressure
172 bar
Pump type
Gear driven
Service refill capacities
Cooling fluid cap
22.33 liters
Fuel cap
115.06 liters
Transmission
Max speed reverse
7.24 kph
Number of reverse gears
3
Number of forward gears
3
Download datasheets
Komatsu D31E-20 vs Komatsu D31EX-21
Komatsu D31E-20 Crawler dozers
Komatsu D31EX-21 Crawler dozers
Engine model
S4D102E
SAA4D102E-2
Operating weight
6,290 kg
7,130 kg
Max speed forward
6.6 kph
8.53 kph
Market Average
-
-
price
-
-
Years
2025
2025
Drive type
Komatsu HYDROSHIFT transmission
Dual-path, hydrostatic transmission
Displacement
3,921 cu cm
3,932 cu cm
Aspiration
Turbocharged
turbocharged and air-to-air aftercooled
Number of cylinders
4
-
Net power
52.2 kw
55.93 kw
Final drives fluid cap
9.84 liters
3.41 liters
Engine oil cap
14 liters
12.49 liters
Ground contact area
31,522.23 cm3
40,902.2 cm3
Number of shoes per side
37
38
Ground pressure
0.41 bar
0.43 bar
Number of track rollers per side
5
5
Track width
33.02 cm
40.64 cm
Track gauge
1.46 m
1.46 m
Track pitch
-
14.48 cm
Tracks length
-
2 m
Relief valve pressure
172 bar
206.15 bar
Pump type
Gear driven
-
Cooling fluid cap
22.33 liters
26.87 liters
Fuel cap
115.06 liters
165.03 liters
Hydraulic fluid cap
-
46.93 liters
Max speed reverse
7.24 kph
8.53 kph
Number of reverse gears
3
3
Number of forward gears
3
3
Length with blade
-
4.02 m
Ground clearance
-
0.4 m
Width over tracks
-
1.86 m
Blade angle
-
25 degrees
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