Komatsu HD605-7

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The HD605-7 is a 70 ton capacity truck that has proven its worth in mines around the world. The HD605-7 has a top loaded speed of 43.5 mph and great climbing power to get out of the pit quickly, dump and cycle back for high production. The oil-cooled wet multi-disc retarder gives the operator great controllability on downhill slopes. A frame designed like Komatsu’s largest mining trucks handles the stress and strains of mining to provide long productive and trouble free life.


Model   Komatsu SAA6D170E-5
Type   Water-cooled, 4-cycle
Aspiration   Turbo-charged, air-to-air after-cooled, cooled EGR
Number of cylinders   6
Bore x stroke 6.69" x 6.69" 170 mm x 170 mm
Piston displacement 1,413 in³ 23.15 ltr
SAE J1995 / Gross 739 HP 551 kW
ISO9249/SAE J1349 / Net 715 HP 533 kW
Rated rpm   2000 rpm
Maximum torque 2,452 lb. ft 339 kg•m
Fuel system   Direct injection
Governor   Electronically controlled
Lubrication system:    
Method   Gear pump, force lubrication
Filter   Full-flow type
Air cleaner   Dry type with double elements and precleaner (cyclonpack type), plus dust indicator
Torque converter   3-elements, 1-stage, 2-phase
Transmission   Full-automatic, planetary type
Speed range   7 speeds forward and 1 reverse
Lockup clutch   Wet, multiple-disc clutch
Forward   Torque converter drive in first gear, direct drive in first lockup and all higher gears
Reverse   Torque converter drive
Shift control   Electronic shift control with automatic clutch modulation in all gears
Maximum travel speed 43.5 mph 70.0 km/h
Final drive type Planetary gear  
Rear Axle Full-floating  
Differential 3.538  
Planetary 4.737  
Suspension System    
Independent, hydropneumatic suspension cylinder with fixed throttle to dampen vibration    
Effective cylinder stroke (front suspension) 11.9" 303 mm
Rear axle oscillation:    
Oil stopper   6.8°
Mechanical stopper   7.7°
Steering System    
Type   Full-hydraulic power steering with two double-acting cylinders.
Supplementary steering   Manually controlled
(meets ISO 5010, SAE J1511 and SAE J53)    
Minimum turning radius 27'11" 8.5 m
Maximum steering angle (outside tire)   39°
Dimensions comply with ISO 3471 and SAE J1040-1988c ROPS (Roll-Over Protective Structure) standards.    
Main Frame    
Type Box-sectioned construction  
Brakes meet ISO 3450 and SAE 1473 standards.    
Service brakes:    
Front   Full-hydraulic control, caliper disc type
Rear   Full-hydraulic control, oil-cooled multiple-disc type
Parking brake   Spring applied, multiple-disc type
Retarder   Oil-cooled, multiple-disc rear brakes act as retarder
Secondary brake   Manual pedal operation.
When hydraulic pressure drops below the rated level, parking brake is automatically actuated    
Brake surface:    
Front 300 in² 1936 cm²
Rear 9,956 in² 64230 cm²
Struck 37.9 yd³ 29.0 m³
Heaped (2:1, SAE) 52.3 yd³ 40.0 m³
Payload 69.4 U.S. tons 63.0 metric tons
high tensile strength steel 227,500 psi 160 kg/mm²
Structure   V-shape body with V-bottom
Material thickness:    
Bottom 0.98" 25 mm
Front 0.63" 16 mm
Sides 0.55" 14 mm
Target area    
(inside length x width) 21'8" x 12'8" 6600 mm x 3870 mm
Dumping angle   48°
Height at full dump 28'10" 8800 mm
Heating   Exhaust heating
Hydraulic System    
Hoist cylinder   Twin, 2-stage telescopic type
Relief pressure 2,990 psi 210 kg/cm² 
20.6 MPa    
Hoist time   11.5 sec
Weight (approximate)    
Empty weight (quarry body) 95,020 lb 46200 kg
Max. gross vehicle weight::    
Standard tire 242,900 lb 110180 kg
Not to exceed max. gross vehicle weight, including options, fuel    
Weight distribution:    
Front axle   47.00%
Rear axle   53.00%
Front axle   32%
Rear axle   68%
Standard 24.00 R35  
Service Refill Capacities    
Fuel tank 206.1 U.S. Gal 780 ltr
Engine oil 21.1 U.S. Gal 80 ltr
Torque converter, transmission and retarder cooling 56.8 U.S. Gal 215 ltr
Differentials 25.1 U.S. Gal 95 ltr
Final drives (total) 11.1 U.S. Gal 42 ltr
Hydraulic system 32.2 U.S. Gal 122 ltr
Suspension (total) 14.7 U.S. Gal 55.6 ltr