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Komatsu HD785-8

Configuration: Komatsu HD785-8 off-highway truck, SAA12V140E-7 engine, 101.6 short ton payload, mechanical drive, 27.00 R49 tires

16 sourced values · Sources: Komatsu HD785-8 product page, specifications (US English). Retrieved 2026-10-25; Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25

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Dimension diagram

A B C D E F Side viewFront view Schematic, not to scale
AOverall lengthNot published
BOverall heightNot published
CWheelbaseNot published
DGround clearanceNot captured
EOverall widthNot published
FTrack gauge / treadNot captured

Weights

SpecValueSource
Max gross (laden) weight≈ 166,000 kg
Published: 365,967 lb
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Gross vehicle weight.
Empty (chassis + body) weight≈ 73,800 kg
Published: 162,701 lb
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25

Dimensions

SpecValueSource
Overall lengthNot publishedKomatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Not labeled in the cited OEM document (dimension drawing figures are unlabeled in the brochure text).
Overall widthNot publishedKomatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Not labeled in the cited OEM document (dimension drawing figures are unlabeled in the brochure text).
Overall heightNot publishedKomatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Not labeled in the cited OEM document (dimension drawing figures are unlabeled in the brochure text).
Overall height, body raised≈ 10,084 mm
Published: 397 in
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Height at full dump, printed 10080 mm / 33'1".
Loading height (empty)Not publishedKomatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Not labeled in the cited OEM document (dimension drawing figures are unlabeled in the brochure text).
WheelbaseNot publishedKomatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Not labeled in the cited OEM document (dimension drawing figures are unlabeled in the brochure text).
Turning radius≈ 10,109 mm
Published: 398 in
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Minimum turning radius, printed 33'2".
Turning / clearance circle diameterNot publishedKomatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Not published in the cited OEM document.

Undercarriage / tires

SpecValueSource
Tire size27.00 R49
Published: 27.00 R49
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25

Engine

SpecValueSource
Drive systemMechanical drive: Komatsu automatic power shift transmission, 7 forward speeds
Published: Mechanical drive: Komatsu automatic power shift transmission, 7 forward speeds
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Engine modelKomatsu SAA12V140E-7
Published: Komatsu SAA12V140E-7
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Gross power≈ 895 kW
Published: 1,200 hp
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Printed '1200 HP' at 1900 rpm.
Net power≈ 850 kW
Published: 1,140 hp
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Brochure 1140 HP / 849 kW; product page prints 1,179 HP / 879 kW (conflict).
Displacement≈ 30.5 L
Published: 1,860 in³
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Rated speed1,900 rpm
Published: 1,900 rpm
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Fuel tank capacity≈ 1,322 L
Published: 349.2 gal
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25

Performance

SpecValueSource
Rated payload≈ 92,170 kg
Published: 101.6 US ton
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Printed in short tons.
Body capacity (heaped)≈ 60 m³
Published: 78.5 yd³
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Heaped 2:1 (SAE).
Body capacity (struck)≈ 40 m³
Published: 52.3 yd³
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25
Max travel speed≈ 65 km/h
Published: 40.4 mph
Komatsu HD785-8 brochure (English), offhighwaytruck-hd785-8-brochure-english-en-hd785-8br01-0622-v5.pdf. Retrieved 2026-10-25

Similar models

BrandModelMax gross (laden) weight
Caterpillar775 (07)≈ 111,812 kg
Caterpillar785≈ 255,826 kg
Caterpillar773 (07)≈ 102,740 kg
KomatsuHD605-10≈ 114,400 kg
KomatsuHD465-10≈ 105,400 kg
HitachiEH3500AC-3322,000 kg

Compare side by side with Caterpillar 775 (07) and Caterpillar 785