Komatsu D21PL-7 vs. Komatsu D275A-2 Crawler dozers Comparison

Compare available technical data for Bulldozers. Find the right details to make your decision easier.

Comparison

Highlight differences

Komatsu D21 Crawler dozers

Komatsu D275A Crawler dozers

Dimensions

Blade height

Blade height 0.59 m

Blade height 1.91 cm

Ground clearance

Ground clearance 0.37 m

Ground clearance 0.52 m

Height - top of cab

Height - top of cab 2.5 m

Height - top of cab 3.96 m

Length with blade

Length with blade 3.47 m

Length with blade 9.08 m

Length without blade

Length without blade 2.65 m

Length without blade 5.46 m

Width over tracks

Width over tracks 2.19 m

Width over tracks 2.96 m

Years

Years 1972-1979

Years 2018-2024

Market Average

Market Average AED 120,000

Market Average AED 150,000

Price

Price AED 70,000

Price AED 120,000

General

Blade width

Blade width 2.5 m

Blade width 4.33 m

Displacement

Displacement 2,690.76 cu cm

Displacement 23,150.06 cm3

Drive type

Drive type Hydrostatic

Drive type Torqflow

Engine model

Engine model 4D95S

Engine model S6D170-4

Operating weight

Operating weight 4,080 kg

Operating weight 50,000 kg

Engine power

Engine power -

Engine power 409 hp

Blade capacity

Blade capacity -

Blade capacity 12.84 cu m

Max speed forward

Max speed forward -

Max speed forward 11.91 kph

Operating voltage

Operating voltage -

Operating voltage 24 V

Max torque

Max torque -

Max torque 3,200 Nm

Engine

Gross power

Gross power 29.83 kw

Gross power 305.74 kw

Number of cylinders

Number of cylinders 4

Number of cylinders 6

Power measured @

Power measured @ 2,450 rpm

Power measured @ 1,800 rpm

Aspiration

Aspiration -

Aspiration Turbocharged, emission certified diesel

Torque measured @

Torque measured @ -

Torque measured @ 2,000 rpm

Alternator supplied amperage

Alternator supplied amperage -

Alternator supplied amperage 50 Amh

Net power

Net power -

Net power 289 kw

Bore

Bore -

Bore 110 cm

Stroke

Stroke -

Stroke 90 cm

Transmission

Number of forward gears

Number of forward gears 2

Number of forward gears 3

Number of reverse gears

Number of reverse gears 2

Number of reverse gears 3

Max speed reverse

Max speed reverse -

Max speed reverse 14.97 kph

Undercarriage

Number of track rollers per side

Number of track rollers per side 6

Number of track rollers per side 8

Track gauge

Track gauge 1.49 m

Track gauge -

Track length

Track length 1.83 m

Track length -

Track pitch

Track pitch 13.72 cm

Track pitch 26.16 cm

Track width

Track width 70.1 cm

Track width 61.21 mm

Ground contact area

Ground contact area -

Ground contact area 106,909.44 cu cm

Number of shoes per side

Number of shoes per side -

Number of shoes per side 39

Ground pressure

Ground pressure -

Ground pressure 0.87 bar

Refill capacities

Final drives fluid cap

Final drives fluid cap -

Final drives fluid cap 43.15 liters

Engine oil cap

Engine oil cap -

Engine oil cap 51.1 liter

Hydraulic system

Pump flow cap

Pump flow cap -

Pump flow cap 255.11 lpm

Relief valve pressure

Relief valve pressure -

Relief valve pressure 205.94 bar

Pump type

Pump type -

Pump type Gear driven

Service refill capacities

Cooling fluid cap

Cooling fluid cap -

Cooling fluid cap 136.26 liters

Fuel cap

Fuel cap -

Fuel cap 840.27 liter

Performance

Looking at performance technical specs and key features the Komatsu D21PL-7 Crawler dozers excels in terms of engine power at and operating weight compared to other models like the Komatsu D275A-2 Crawler dozers.

User rating

Owners operators and fleet managers recommend the Komatsu D21PL-7 Crawler dozers for its high reliability and endurance in diverse applications. The same can be said about the Komatsu D275A-2 Crawler dozers.