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Komatsu D31E-20 Crawler dozers research

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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

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Download datasheets

Komatsu D31E-20 vs Komatsu D31EX-21

Komatsu D31E-20 Crawler dozers

Komatsu D31EX-21 Crawler dozers

General
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
Operational specifications
Drive type
Komatsu HYDROSHIFT transmission
Dual-path, hydrostatic transmission
Engine
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
Refill capacities
Final drives fluid cap
9.84 liters
3.41 liters
Engine oil cap
14 liters
12.49 liters
Undercarriage
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
Hydraulic system
Relief valve pressure
172 bar
206.15 bar
Pump type
Gear driven
-
Service refill capacities
Cooling fluid cap
22.33 liters
26.87 liters
Fuel cap
115.06 liters
165.03 liters
Hydraulic fluid cap
-
46.93 liters
Transmission
Max speed reverse
7.24 kph
8.53 kph
Number of reverse gears
3
3
Number of forward gears
3
3
Dimensions
Length with blade
-
4.02 m
Ground clearance
-
0.4 m
Width over tracks
-
1.86 m
Blades
Blade angle
-
25 degrees

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