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Published dimensions and weight

Komatsu D21A-7

The Komatsu D21A-7 pairs the 4D95S engine (40 hp) with an operating weight near 3.6 t.

01Published dimensions and weight
Dimensions reference
Crawler Tractor category illustration
Measurement reference — not to scale
01Dimensions referenceLength × width × height
02Operating Weight7936.7 lb3600 kg
03Selected published values22
Published highlights
  • Length W/ Blade: 11.16 ft / 3400 mm
  • Width Over Tracks: 5.29 ft / 1610 mm
  • Height To Top Of Cab: 8.13 ft / 2475 mm
  • Length Of Track On Ground: 5.53 ft / 1685 mm
Typical use

Crawler tractors are commonly used for pushing, grading and clearing material where tracked traction is useful. Published rows for Komatsu D21A-7 include published operating weight of 7936.7 lb / 3600 kg, published engine power of 40 hp / 29.9 kw, the published “Length W/ Blade” field of 11.16 ft / 3400 mm. These values describe the published configuration; verify the specific machine's configuration, attachments and records.

Buyer review notes
  • Compare the published “Length W/ Blade” field (11.16 ft / 3400 mm) with the specific machine's configuration and records; options and condition can differ.
  • Compare the published “Width Over Tracks” field (5.29 ft / 1610 mm) with the specific machine's configuration and records; options and condition can differ.
  • Compare the published “Height To Top Of Cab” field (8.13 ft / 2475 mm) with the specific machine's configuration and records; options and condition can differ.
02Specifications

Published values, clearly grouped.

Published specifications and measurements are organized by section for quick reference.

01

Dimensions

Length W/ Blade11.16 ft3400 mm
Width Over Tracks5.29 ft1610 mm
Height To Top Of Cab8.13 ft2475 mm
Length Of Track On Ground5.53 ft1685 mm
Ground Clearance0.97 ft295 mm
Length W/O Blade8.4 ft2560 mm
02

Undercarriage

Track Gauge4.3 ft1310 mm
Standard Shoe Size11.82 in300 mm
Number Of Track Rollers Per Side55
Track Pitch5.32 in135 mm
03

Engine

Number Of Cylinders44
Engine Make22382238
Engine Model4D95S4D95S
Gross Power40 hp29.9 kw
Power Measured @2450 rpm2450 rpm
Displacement164.2 cu in2.7 L
04

Operational

Operating Weight7936.7 lb3600 kg
05

Transmission

Transmission TypeHSHS
Number Of Forward Gears22
Number Of Reverse Gears22
06

Standard Blade

Width7.2 ft2170 mm
Height23.3 in590 mm
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Manufacturer-published specifications.

Other Komatsu models