Komatsu
Komatsu D40 Crawler dozers tech specs
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Video[1]
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Interior [2]
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Exterior [4]
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Attachments [2]
1979-1985
3 m Blade width
Direct drive Drive type
210.07 liter Fuel cap
9,320 kg Operating weight
2.07 m Track length
40.13 cm Track width
A mid-size crawler dozer built for grading, land clearing, and small earthmoving projects, the Komatsu D40 delivers dependable pushing capability through a direct-drive drivetrain and stable tracked undercarriage. With about 9,320 kg operating weight and a 3 m blade width, it suits site preparation, farm development, and road grading tasks where simple mechanical construction and reliable traction are more important than modern electronics.
Operating weight 9,320 kg
Blade width 3 m
Drive type Direct drive
Fuel tank capacity 210.07 liters
Track length 2.07 m
Track width 40.13 cm
Crawler undercarriage for strong traction on loose ground
Makana rating
Owner rating
Market average
AED 150,000Starting from
AED 100,000Komatsu D40 technical specifications
Highlight differences
Blade height
Blade height 0.75 m
Blade height 0.75 m
Blade height 0.91 m
Blade height 0.9 m
Blade height 0.89 m
Blade height 0.89 m
Blade height 0.91 m
Blade height 0.59 m
Blade height 0.58 m
Blade height 0.58 m
Ground clearance
Ground clearance 0.37 m
Ground clearance 0.37 m
Ground clearance 0.37 m
Ground clearance 0.46 m
Ground clearance 0.46 m
Ground clearance 0.46 m
Ground clearance 0.46 m
Ground clearance 0.46 m
Ground clearance 0.46 m
Ground clearance 0.46 m
Height - top of cab
Height - top of cab 2.62 m
Height - top of cab 2.8 m
Height - top of cab 2.8 m
Height - top of cab 2.62 m
Height - top of cab 2.83 m
Height - top of cab 2.83 m
Height - top of cab 2.83 m
Height - top of cab 2.62 m
Height - top of cab 2.83 m
Height - top of cab 2.83 m
Length with blade
Length with blade 4.27 m
Length with blade 4.27 m
Length with blade 4.48 m
Length with blade 4.69 m
Length with blade 4.6 m
Length with blade 4.6 m
Length with blade 4.75 m
Length with blade 4.69 m
Length with blade 4.63 m
Length with blade 4.63 m
Length without blade
Length without blade 3.29 m
Length without blade 3.41 m
Length without blade 3.41 m
Length without blade 3.6 m
Length without blade 3.6 m
Length without blade 3.6 m
Length without blade 3.6 m
Length without blade -
Length without blade 3.6 m
Length without blade 3.6 m
Width over tracks
Width over tracks 1.95 m
Width over tracks 1.95 m
Width over tracks 2.16 m
Width over tracks 2.5 m
Width over tracks 2.5 m
Width over tracks 2.5 m
Width over tracks 2.71 m
Width over tracks 3.51 m
Width over tracks 3.51 m
Width over tracks 3.51 m
Years
Years 1979-1985
Years 1979-1985
Years 1979-1985
Years 1979-1985
Years 1979-1985
Years 1979-1985
Years 1979-1985
Years 1979-1985
Years 1979-1985
Years 1979-1985
Market Average
Market Average AED 150,000
Market Average AED 150,000
Market Average AED 150,000
Market Average AED 150,000
Market Average AED 150,000
Market Average AED 150,000
Market Average AED 150,000
Market Average AED 150,000
Market Average AED 150,000
Market Average AED 150,000
Price
Price AED 100,000
Price AED 100,000
Price AED 100,000
Price AED 100,000
Price AED 100,000
Price AED 100,000
Price AED 100,000
Price AED 100,000
Price AED 100,000
Price AED 100,000
Blade width
Blade width 3 m
Blade width 3 m
Blade width 2 m
Blade width 3 m
Blade width 3 m
Blade width 3 m
Blade width 3 m
Blade width 4 m
Blade width 4 m
Blade width 4 m
Cooling fluid cap
Cooling fluid cap 34.07 liter
Cooling fluid cap 33.31 liter
Cooling fluid cap -
Cooling fluid cap -
Cooling fluid cap -
Cooling fluid cap -
Cooling fluid cap -
Cooling fluid cap -
Cooling fluid cap -
Cooling fluid cap -
Fuel cap
Fuel cap 210.07 liter
Fuel cap 245.27 liter
Fuel cap -
Fuel cap -
Fuel cap -
Fuel cap -
Fuel cap -
Fuel cap -
Fuel cap -
Fuel cap -
Displacement
Displacement 3,980.43 cu cm
Displacement 6,490.93 cu cm
Displacement 6,500.76 cu cm
Displacement 4,331.11 cu cm
Displacement 6,490.93 cu cm
Displacement 6,490.93 cu cm
Displacement 6,490.93 cu cm
Displacement 4,331.11 cu cm
Displacement 6,490.93 cu cm
Displacement 6,490.93 cu cm
Gross power
Gross power 59.66 kw
Gross power 69.35 kw
Gross power 70.84 kw
Gross power 59.66 kw
Gross power 69.35 kw
Gross power 70.84 kw
Gross power 70.84 kw
Gross power 59.66 kw
Gross power 69.35 kw
Gross power 70.84 kw
Number of cylinders
Number of cylinders 4
Number of cylinders 6
Number of cylinders 6
Number of cylinders 4
Number of cylinders 6
Number of cylinders 6
Number of cylinders 6
Number of cylinders 4
Number of cylinders 6
Number of cylinders 6
Power measured @
Power measured @ 2,400 rpm
Power measured @ 2,350 rpm
Power measured @ 2,350 rpm
Power measured @ 2,400 rpm
Power measured @ 2,350 rpm
Power measured @ 2,350 rpm
Power measured @ 2,350 rpm
Power measured @ 2,400 rpm
Power measured @ 2,350 rpm
Power measured @ 2,350 rpm
Drive type
Drive type Direct drive
Drive type Direct drive
Drive type Direct drive
Drive type Direct drive
Drive type Direct drive
Drive type Direct drive
Drive type Direct drive
Drive type Direct drive
Drive type Direct drive
Drive type Direct drive
Engine model
Engine model S4D105
Engine model 6D105-1
Engine model 6D105-1
Engine model S4D105-3
Engine model 6D105-1
Engine model 6D105-1
Engine model 6D105-1
Engine model S4D105-3
Engine model 6D105-1
Engine model 6D105-1
Max speed forward
Max speed forward 9.66 kph
Max speed forward 8.85 kph
Max speed forward -
Max speed forward -
Max speed forward -
Max speed forward -
Max speed forward -
Max speed forward -
Max speed forward -
Max speed forward -
Operating weight
Operating weight 9,320 kg
Operating weight 9,800 kg
Operating weight 10,600 kg
Operating weight 10,300 kg
Operating weight 10,620 kg
Operating weight 11,080 kg
Operating weight 11,300 kg
Operating weight 10,800 kg
Operating weight 11,400 kg
Operating weight 11,640 kg
Blade capacity
Blade capacity -
Blade capacity -
Blade capacity -
Blade capacity 2.45 cu m
Blade capacity 2.45 cu m
Blade capacity -
Blade capacity -
Blade capacity -
Blade capacity -
Blade capacity -
Ground pressure
Ground pressure 0.5 bar
Ground pressure 0.5 bar
Ground pressure -
Ground pressure 0.24 bar
Ground pressure 0.24 bar
Ground pressure -
Ground pressure -
Ground pressure -
Ground pressure -
Ground pressure -
Number of shoes per side
Number of shoes per side 37
Number of shoes per side 37
Number of shoes per side 39
Number of shoes per side 72
Number of shoes per side 43
Number of shoes per side 43
Number of shoes per side 43
Number of shoes per side 43
Number of shoes per side 43
Number of shoes per side 43
Number of track rollers per side
Number of track rollers per side 5
Number of track rollers per side 5
Number of track rollers per side 6
Number of track rollers per side 6
Number of track rollers per side 6
Number of track rollers per side 7
Number of track rollers per side 7
Number of track rollers per side 6
Number of track rollers per side 6
Number of track rollers per side 7
Track gauge
Track gauge 1.55 m
Track gauge 1.55 m
Track gauge 1.77 m
Track gauge 1.77 m
Track gauge 1.77 m
Track gauge 1.77 m
Track gauge 1.98 m
Track gauge 2.29 m
Track gauge 2.29 m
Track gauge 2.29 m
Track length
Track length 2.07 m
Track length 2.07 m
Track length 2.26 m
Track length 2.59 m
Track length 2.59 m
Track length 2.59 m
Track length 2.65 m
Track length 2.59 m
Track length 2.59 m
Track length 2.59 m
Track pitch
Track pitch 17.53 cm
Track pitch 17.53 cm
Track pitch 17.53 cm
Track pitch 17.53 cm
Track pitch 17.53 cm
Track pitch 17.53 cm
Track pitch 17.53 cm
Track pitch 17.53 cm
Track pitch 17.53 cm
Track pitch 17.53 cm
Track width
Track width 40.13 cm
Track width 40.13 cm
Track width 40.13 cm
Track width 72.14 cm
Track width 72.14 cm
Track width 72.14 cm
Track width 72.14 cm
Track width 72.14 cm
Track width 72.14 cm
Track width 72.14 cm
Max speed reverse
Max speed reverse 7.72 kph
Max speed reverse 8.05 kph
Max speed reverse -
Max speed reverse -
Max speed reverse -
Max speed reverse -
Max speed reverse -
Max speed reverse -
Max speed reverse -
Max speed reverse -
Number of forward gears
Number of forward gears 4
Number of forward gears 5
Number of forward gears 5
Number of forward gears 4
Number of forward gears 5
Number of forward gears 5
Number of forward gears 5
Number of forward gears 4
Number of forward gears 5
Number of forward gears 5
Number of reverse gears
Number of reverse gears 3
Number of reverse gears 4
Number of reverse gears 4
Number of reverse gears 3
Number of reverse gears 4
Number of reverse gears 4
Number of reverse gears 4
Number of reverse gears 3
Number of reverse gears 4
Number of reverse gears 4
Download datasheets
Komatsu D40 expert review
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Overview
The Komatsu D40 (1979–1985) is a mid-size crawler dozer designed for grading and land clearing work. With an operating weight of 9,320 kg, a 3 m blade width, and a durable crawler chassis, it delivers dependable pushing performance for site preparation and earthmoving tasks.
Expert rating: 3 stars
Pros
Simple direct-drive transmission and wide blade for effective grading work.
Cons
Older mechanical design with limited comfort and efficiency compared with modern dozers.
Performance & Efficiency
The crawler undercarriage ensures stable traction for pushing soil and grading uneven terrain, while the direct-drive drivetrain provides reliable mechanical power transfer.
In Comparison
Komatsu D37: Smaller dozer suited for lighter grading tasks.
Komatsu D39: More modern crawler dozer with improved efficiency.
Komatsu D40: Durable classic design focused on simple mechanical reliability.
Final Verdict
Rated 3 stars, the Komatsu D40 remains a dependable crawler dozer within the AED 100,000–150,000 price range.
Komatsu D40 owner rating
Komatsu D40 Crawler dozers [1979-1985]
1979-1985
Overall rating
Based on 3 ratings
4.0
performance
3.7
comfort
4.0
fuel efficiency
3.7
safety
4.3
features
4.0
5 stars
0 %
4 stars
100 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Pros
Wide 3 m blade helps move soil efficiently during grading and land clearing.
Cons
Older direct-drive system requires more operator skill compared with modern hydrostatic dozers.
performance
3.0
comfort
4.0
fuel efficiency
4.0
safety
5.0
features
4.0
Komatsu D40 similar models
Highlight differences
Blade height
Blade height 0.75 m
Blade height 0.94 m
Blade height -
Ground clearance
Ground clearance 0.37 m
Ground clearance 0.34 m
Ground clearance -
Height - top of cab
Height - top of cab 2.62 m
Height - top of cab 2.74 m
Height - top of cab 1.95 m
Length with blade
Length with blade 4.27 m
Length with blade 3.96 m
Length with blade 3.35 m
Length without blade
Length without blade 3.29 m
Length without blade -
Length without blade -
Width over tracks
Width over tracks 1.95 m
Width over tracks 1.86 m
Width over tracks 2.04 m
Years
Years 1979-1985
Years 2003-2017
Years 2013-2020
Market Average
Market Average AED 150,000
Market Average AED 230,000
Market Average AED 200,000
Price
Price AED 100,000
Price AED 140,000
Price AED 160,000
Blade width
Blade width 3 m
Blade width 2 m
Blade width -
Cooling fluid cap
Cooling fluid cap 34.07 liter
Cooling fluid cap -
Cooling fluid cap -
Fuel cap
Fuel cap 210.07 liter
Fuel cap -
Fuel cap 38.61 liter
Displacement
Displacement 3,980.43 cu cm
Displacement 4,891.55 cu cm
Displacement 3,916.52 cu cm
Gross power
Gross power 59.66 kw
Gross power 60.4 kw
Gross power -
Number of cylinders
Number of cylinders 4
Number of cylinders 6
Number of cylinders -
Power measured @
Power measured @ 2,400 rpm
Power measured @ 2,500 rpm
Power measured @ -
Drive type
Drive type Direct drive
Drive type DPS
Drive type -
Engine model
Engine model S4D105
Engine model 6D95L-1
Engine model S4D102
Max speed forward
Max speed forward 9.66 kph
Max speed forward -
Max speed forward 9.66 kph
Operating weight
Operating weight 9,320 kg
Operating weight 6,510 kg
Operating weight 7,110 kg
Ground pressure
Ground pressure 0.5 bar
Ground pressure -
Ground pressure -
Number of shoes per side
Number of shoes per side 37
Number of shoes per side 41
Number of shoes per side -
Number of track rollers per side
Number of track rollers per side 5
Number of track rollers per side 6
Number of track rollers per side -
Track gauge
Track gauge 1.55 m
Track gauge 1.46 m
Track gauge 1.58 m
Track length
Track length 2.07 m
Track length 2.19 m
Track length 2.19 m
Track pitch
Track pitch 17.53 cm
Track pitch 15.49 cm
Track pitch -
Track width
Track width 40.13 cm
Track width 40.13 cm
Track width 45.72 cm
Max speed reverse
Max speed reverse 7.72 kph
Max speed reverse -
Max speed reverse 11.43 kph
Number of forward gears
Number of forward gears 4
Number of forward gears 3
Number of forward gears 3
Number of reverse gears
Number of reverse gears 3
Number of reverse gears 3
Number of reverse gears 3
Komatsu D40 gallery
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