Komatsu D21A-3 Crawler dozers Specs & Dimensions

General

Blade capacity

Blade capacity 0.76 cu m

Blade capacity -

Blade capacity 0.76 cu m

Blade capacity 0.92 cu m

Blade capacity 19.11 cu m

Blade capacity -

Drive type

Drive type Hydrostatic

Drive type Komatsu HYDROSHIFT transmission

Drive type -

Drive type Hydrostatic

Drive type -

Drive type Komatsu HYDROSHIFT transmission

Drive type Hydrostatic

Engine model

Engine model 4D92-1

Engine model 4D92-2P

Engine model 4D95S

Engine model 4D94E

Engine model 4D94LE-2

Engine model 4D95S-W

Engine model 4D95S

Engine model 4D94E

Engine model -

Engine model 4D94LE-2

Engine model 4D95S-W

Engine model 4D95S

Engine model 4D94E

Max speed forward

Max speed forward 6.92 kph

Max speed forward 4.51 kph

Max speed forward -

Max speed forward 4.35 kph

Max speed forward -

Max speed forward 4.35 kph

Max speed forward -

Operating weight

Operating weight 3,430 kg

Operating weight 3,620 kg

Operating weight 3,600 kg

Operating weight 3,680 kg

Operating weight 3,941 kg

Operating weight 3,710 kg

Operating weight 3,640 kg

Operating weight 3,720 kg

Operating weight 3,161 kg

Operating weight 3,279 kg

Operating weight 4,241 kg

Operating weight 4,030 kg

Operating weight 4,080 kg

Operating weight 4,110 kg

Years

Years 1972-1979

Market Average

Market Average AED 120,000

Price

Price AED 70,000

Dimensions

Blade height

Blade height 0.57 m

Blade height 0.59 m

Blade height 0.69 m

Blade height -

Blade height 0.59 m

Blade height 0.57 m

Blade height 0.69 m

Blade height 0.59 m

Ground clearance

Ground clearance 0.34 m

Ground clearance 0.3 m

Ground clearance -

Ground clearance 0.37 m

Ground clearance 0.3 m

Ground clearance 0.4 m

Ground clearance -

Ground clearance 0.37 m

Height - top of cab

Height - top of cab 2.1 m

Height - top of cab 2.16 m

Height - top of cab 2.5 m

Height - top of cab 2.47 m

Height - top of cab 1.8 m

Height - top of cab 2.5 m

Height - top of cab 2.47 m

Height - top of cab -

Height - top of cab 2.19 m

Height - top of cab 2.47 m

Height - top of cab 2.53 m

Height - top of cab 2.5 m

Length with blade

Length with blade 3.47 m

Length with blade 3.41 m

Length with blade 3.38 m

Length with blade 3.26 m

Length with blade 3.41 m

Length with blade -

Length with blade 3.38 m

Length with blade 3.41 m

Length with blade 3.47 m

Length without blade

Length without blade 2.47 m

Length without blade 2.56 m

Length without blade -

Length without blade 2.56 m

Length without blade -

Length without blade 2.47 m

Length without blade -

Length without blade 2.56 m

Length without blade 2.65 m

Width over tracks

Width over tracks 1.55 m

Width over tracks 1.62 m

Width over tracks 1.34 m

Width over tracks -

Width over tracks 1.62 m

Width over tracks -

Width over tracks 1.83 m

Width over tracks 1.52 m

Width over tracks 2.01 m

Width over tracks 2.19 m

Operational specifications

Blade width

Blade width 2 m

Blade width -

Blade width 2 m

Service refill capacities

Cooling fluid cap

Cooling fluid cap 14 liter

Cooling fluid cap 13.25 liter

Cooling fluid cap -

Cooling fluid cap 9.84 liter

Cooling fluid cap 10.22 liter

Cooling fluid cap -

Cooling fluid cap 9.84 liter

Cooling fluid cap -

Fuel cap

Fuel cap 60.18 liter

Fuel cap -

Fuel cap 60.18 liter

Fuel cap -

Fuel cap 60.18 liter

Fuel cap -

Hydraulic fluid cap

Hydraulic fluid cap -

Hydraulic fluid cap 20.82 liter

Hydraulic fluid cap 21.2 liter

Hydraulic fluid cap -

Hydraulic fluid cap 20.82 liter

Hydraulic fluid cap -

Engine

Displacement

Displacement 2,605.55 cu cm

Displacement 2,941.48 cu cm

Displacement 2,690.76 cu cm

Displacement 2,775.97 cu cm

Displacement 3,048 cu cm

Displacement 2,690.76 cu cm

Displacement 2,775.97 cu cm

Displacement -

Displacement 3,048 cu cm

Displacement 2,690.76 cu cm

Displacement 2,775.97 cu cm

Gross power

Gross power 27.59 kw

Gross power 29.08 kw

Gross power 29.83 kw

Gross power 32.14 kw

Gross power 32.29 kw

Gross power 29.83 kw

Gross power 27.59 kw

Gross power 29.08 kw

Gross power 32.14 kw

Gross power 29.83 kw

Number of cylinders

Number of cylinders 4

Number of cylinders -

Number of cylinders 4

Number of cylinders -

Number of cylinders 4

Number of cylinders -

Power measured @

Power measured @ 2,450 rpm

Power measured @ -

Power measured @ 2,450 rpm

Power measured @ -

Power measured @ 2,450 rpm

Max torque

Max torque -

Max torque 147.1 Nm

Max torque -

Max torque 174.08 Nm

Max torque -

Aspiration

Aspiration -

Aspiration Naturally aspirated

Aspiration -

Aspiration Naturally aspirated

Aspiration -

Net power

Net power -

Net power 29.83 kw

Net power -

Net power 29.83 kw

Net power -

Torque measured @

Torque measured @ -

Torque measured @ 1,300 rpm

Torque measured @ -

Undercarriage

Ground pressure

Ground pressure 0.29 bar

Ground pressure 0.3 bar

Ground pressure -

Ground pressure 0.33 bar

Ground pressure 0.31 bar

Ground pressure -

Ground pressure 0.19 bar

Ground pressure 0.21 bar

Ground pressure -

Number of shoes per side

Number of shoes per side 37

Number of shoes per side -

Number of shoes per side 37

Number of shoes per side -

Number of shoes per side 37

Number of shoes per side 67

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

Track gauge

Track gauge 1.22 m

Track gauge 1.31 m

Track gauge -

Track gauge 1.31 m

Track gauge 1.34 m

Track gauge 1.31 m

Track gauge -

Track gauge 1.49 m

Track length

Track length 1.68 m

Track length 1.71 m

Track length -

Track length 1.71 m

Track length 1.68 m

Track length 1.71 m

Track length -

Track length 1.71 m

Track length 1.83 m

Track pitch

Track pitch 13.72 cm

Track pitch -

Track pitch 14.73 cm

Track pitch 7.11 cm

Track pitch -

Track pitch 14.73 cm

Track pitch 13.72 cm

Track width

Track width 30.23 cm

Track width 29.97 cm

Track width 30.23 cm

Track width 51.05 cm

Track width 50.8 cm

Track width 50.04 cm

Track width 70.1 cm

Ground contact area

Ground contact area -

Ground contact area 25,727.75 cu cm

Ground contact area -

Ground contact area 43,655.23 cu cm

Ground contact area -

Transmission

Max speed reverse

Max speed reverse 6.44 kph

Max speed reverse 5.47 kph

Max speed reverse -

Max speed reverse 5.63 kph

Max speed reverse -

Max speed reverse 5.63 kph

Max speed reverse -

Number of forward gears

Number of forward gears 3

Number of forward gears 2

Number of forward gears -

Number of forward gears 2

Number of reverse gears

Number of reverse gears 3

Number of reverse gears 2

Number of reverse gears -

Number of reverse gears 2

Hydraulic system

Pump flow cap

Pump flow cap -

Pump flow cap 53.37 lpm

Pump flow cap -

Relief valve pressure

Relief valve pressure -

Relief valve pressure 152.01 bar

Relief valve pressure -

Blades

Blade angle

Blade angle -

Blade angle 25 º

Blade angle -

Blade angle 25 º

Blade angle -

Refill capacities

Engine oil cap

Engine oil cap -

Engine oil cap 6.43 liter

Engine oil cap 6.81 liter

Engine oil cap -

Engine oil cap 6.43 liter

Engine oil cap -

Final drives fluid cap

Final drives fluid cap -

Final drives fluid cap 6.06 liter

Final drives fluid cap -

Final drives fluid cap 7.95 liter

Final drives fluid cap -

Komatsu D21 Crawler dozers tech specs

Komatsu D21 technical specifications

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