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Komatsu HD680 to HD1200M-1 specifications

Entries in this reference
Listing-entry count
4
Short answer

Komatsu HD680 to HD1200M-1: rigid rock trucks.

Selected configuration figures
ConfigurationDocumented field and quantity
HD680
Gross Power
775 hp
Overall Length
32.12 ft
HD780
Gross Power
800 hp
Overall Length
32.76 ft
HD1200-1
Gross Power
1,200 hp
Overall Length
35.62 ft
HD1200M-1
Gross Power
1,200 hp
Overall Length
35.72 ft
HD680 to HD1200M-1 specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
KomatsuHD680 to HD1200M-14HD680, HD780, HD1200-1, and HD1200M-1
Dimensions and weight
SpecificationHD680HD780HD1200-1HD1200M-1
Overall Length32.12 ft32.76 ft35.62 ft35.72 ft
Overall Width15.34 ft18.71 ft21.49 ft19.31 ft
Overall Height14.08 ft15.98 ft16.97 ft16.05 ft
Wheelbase15.59 ft15.59 ft17.72 ft17.72 ft
Ground Clearance1.86 ft2.56 ft2.35 ft2.5 ft
Dump Height28.61 ft29.53 ft34.26 ft34.59 ft
Dump Ground Clearance1.78 ft2.96 ft5.42 ft5.42 ft
Dump
SpecificationHD680HD780HD1200-1HD1200M-1
Dump Angle65 degrees64 degrees47.5 degrees47.5 degrees
SpecificationHD680HD1200-1HD1200M-1
Load Capacity - Heaped57.55 yd391.56 yd391.56 yd3
Rated Payload149,914 lb240,000 lb240,000 lb
SpecificationHD680HD1200-1
Load Capacity - Struck41.86 yd360.3 yd3
Engine
SpecificationHD680HD780HD1200-1HD1200M-1
Engine ModelHD680VTA-1710KTA-2300CKTA-2300-C1200
Gross Power775 hp800 hp1,200 hp1,200 hp
Displacement1,710 cu in1,709 cu in2,300 cu in2,300 cu in
SpecificationHD780HD1200-1HD1200M-1
Net Power782 hp1,160 hp1,160 hp
Aspirationturbochargedturbochargedturbocharged
Operational
SpecificationHD680HD780HD1200-1HD1200M-1
Tire Size24.00-35-42PR24.00-49-42PR30.00-51-46PR30.00-51-49PR
SpecificationHD780HD1200-1HD1200M-1
Fuel Capacity264.2 gal502 gal502 gal
Cooling System Fluid Capacity60.8 gal66.1 gal153.3 gal
Engine Oil Capacity23.8 gal38.4 gal38.4 gal
SpecificationHD1200M-1
Diff And Final Drive Fluid Capacity126.9 gal
Hydraulic System Fluid Capacity105.7 gal
Transmission and speeds
SpecificationHD680HD780HD1200M-1
Transmission TypeTorque converter and TORQFLOWTORQFLOW planetary gearKomatsu TORQFLOW planetary gear
Number Of Gears - Forward668
Number Of Gears - Reverse111
SpecificationHD680HD780HD1200-1HD1200M-1
Max Speed40.4 mph40.4 mph35.8 mph37.3 mph
Weights
SpecificationHD680HD1200-1HD1200M-1
Empty Weight102,515 lb189,157 lb178,575 lb
Loaded Weight252,551 lb453,833 lb443,129 lb
Weight Distribution Front - Loaded32 %32 %32 %
Weight Distribution Rear - Loaded68 %68 %68 %
SpecificationHD1200-1HD1200M-1
Weight Distribution Front - Empty43.1 %48 %
Weight Distribution Rear - Empty56.9 %52 %
Variants — Source comparison annotation
Source guideDiffering-field count reported
HD680 to HD1200M-132
Ratios
FigureHD680HD1200-1HD1200M-1
Engine horsepower per 1,000 lb of weight7.66.16.5
Rated payload per cubic yard of heaped body2,605 lb2,621 lb2,621 lb
FigureHD780HD1200-1HD1200M-1
Fuel tank per engine horsepower0.34 gal0.43 gal0.43 gal

HD680 to HD1200M-1: forum references

Related discussion: “Komatsu 325 Haul Truck Trouble Code Question”: HD180-4 to HD405-6.

HD680 to HD1200M-1: dated market and recall observations — Dated listing search
DateListing indexEquipment classNames queriedResult
2026-09-24MachineryTrader (machinerytrader.com)rigid rock truckHD680, HD780, HD1200-1No matching offers in this snapshot
Dated CPSC search
DateDatabaseNames queriedResult
2026-09-24U.S. Consumer Product Safety CommissionKomatsu; HD680, HD780, HD1200-1No matching recall in the stated search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
  • Reference site: Komatsu HD680 — RitchieSpecs. Observed 2026-09-24.
Reference site
  • Reference site: Komatsu HD780 — RitchieSpecs. Observed 2026-09-24.
Reference site
Reference site
Federal agency data

Komatsu HD680 to HD1200M-1: Configuration records

HD680
SpecificationSource figure
Dimensions and weight
Overall Length32.12 ft
Overall Width15.34 ft
Overall Height14.08 ft
Wheelbase15.59 ft
Ground Clearance1.86 ft
Dump Height28.61 ft
Dump Ground Clearance1.78 ft
Dump
Rated Payload149,914 lb
Load Capacity - Heaped57.55 yd3
Load Capacity - Struck41.86 yd3
Dump Angle65 degrees
Engine
Engine ModelHD680
Gross Power775 hp
Displacement1,710 cu in
Operational
Tire Size24.00-35-42PR
Transmission and speeds
Transmission TypeTorque converter and TORQFLOW
Number Of Gears - Forward6
Number Of Gears - Reverse1
Max Speed40.4 mph
Weights
Empty Weight102,515 lb
Loaded Weight252,551 lb
Weight Distribution Front - Loaded32 %
Weight Distribution Rear - Loaded68 %

Source

HD780
SpecificationSource figure
Dimensions and weight
Overall Length32.76 ft
Overall Width18.71 ft
Overall Height15.98 ft
Wheelbase15.59 ft
Ground Clearance2.56 ft
Dump Height29.53 ft
Dump Ground Clearance2.96 ft
Dump
Dump Angle64 degrees
Engine
Engine ModelVTA-1710
Gross Power800 hp
Net Power782 hp
Aspirationturbocharged
Displacement1,709 cu in
Operational
Fuel Capacity264.2 gal
Cooling System Fluid Capacity60.8 gal
Engine Oil Capacity23.8 gal
Tire Size24.00-49-42PR
Transmission and speeds
Transmission TypeTORQFLOW planetary gear
Number Of Gears - Forward6
Number Of Gears - Reverse1
Max Speed40.4 mph

Source

HD1200-1
SpecificationSource figure
Dimensions and weight
Overall Length35.62 ft
Overall Width21.49 ft
Overall Height16.97 ft
Wheelbase17.72 ft
Ground Clearance2.35 ft
Dump Height34.26 ft
Dump Ground Clearance5.42 ft
Dump
Rated Payload240,000 lb
Load Capacity - Heaped91.56 yd3
Load Capacity - Struck60.3 yd3
Dump Angle47.5 degrees
Engine
Engine ModelKTA-2300C
Gross Power1,200 hp
Net Power1,160 hp
Aspirationturbocharged
Displacement2,300 cu in
Operational
Fuel Capacity502 gal
Cooling System Fluid Capacity66.1 gal
Engine Oil Capacity38.4 gal
Tire Size30.00-51-46PR
Transmission and speeds
Max Speed35.8 mph
Weights
Empty Weight189,157 lb
Loaded Weight453,833 lb
Weight Distribution Front - Empty43.1 %
Weight Distribution Rear - Empty56.9 %
Weight Distribution Front - Loaded32 %
Weight Distribution Rear - Loaded68 %

Source

HD1200M-1
SpecificationSource figure
Dimensions and weight
Overall Length35.72 ft
Overall Width19.31 ft
Overall Height16.05 ft
Wheelbase17.72 ft
Ground Clearance2.5 ft
Dump Height34.59 ft
Dump Ground Clearance5.42 ft
Dump
Rated Payload240,000 lb
Load Capacity - Heaped91.56 yd3
Dump Angle47.5 degrees
Engine
Engine ModelKTA-2300-C1200
Gross Power1,200 hp
Net Power1,160 hp
Aspirationturbocharged
Displacement2,300 cu in
Operational
Fuel Capacity502 gal
Cooling System Fluid Capacity153.3 gal
Engine Oil Capacity38.4 gal
Diff And Final Drive Fluid Capacity126.9 gal
Hydraulic System Fluid Capacity105.7 gal
Tire Size30.00-51-49PR
Transmission and speeds
Transmission TypeKomatsu TORQFLOW planetary gear
Number Of Gears - Forward8
Number Of Gears - Reverse1
Max Speed37.3 mph
Weights
Empty Weight178,575 lb
Loaded Weight443,129 lb
Weight Distribution Front - Empty48 %
Weight Distribution Rear - Empty52 %
Weight Distribution Front - Loaded32 %
Weight Distribution Rear - Loaded68 %

Source

Compare Komatsu HD680, HD780, HD1200-1, HD1200M-1
Dimensions and weight
SpecificationHD680HD780HD1200-1HD1200M-1
Overall Length32.12 ft32.76 ft35.62 ft35.72 ft
Overall Width15.34 ft18.71 ft21.49 ft19.31 ft
Overall Height14.08 ft15.98 ft16.97 ft16.05 ft
Wheelbase15.59 ft15.59 ft17.72 ft17.72 ft
Ground Clearance1.86 ft2.56 ft2.35 ft2.5 ft
Dump Height28.61 ft29.53 ft34.26 ft34.59 ft
Dump Ground Clearance1.78 ft2.96 ft5.42 ft5.42 ft
Dump
SpecificationHD680HD780HD1200-1HD1200M-1
Dump Angle65 degrees64 degrees47.5 degrees47.5 degrees
Engine
SpecificationHD680HD780HD1200-1HD1200M-1
Engine ModelHD680VTA-1710KTA-2300CKTA-2300-C1200
Gross Power775 hp800 hp1,200 hp1,200 hp
Displacement1,710 cu in1,709 cu in2,300 cu in2,300 cu in
Operational
SpecificationHD680HD780HD1200-1HD1200M-1
Tire Size24.00-35-42PR24.00-49-42PR30.00-51-46PR30.00-51-49PR
Transmission and speeds
SpecificationHD680HD780HD1200-1HD1200M-1
Max Speed40.4 mph40.4 mph35.8 mph37.3 mph

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