Machine models

Komatsu HD405-7 and HD605-7E0 specifications

Entries in this reference
Listing-entry count
2

Short answer

Komatsu HD405-7 and HD605-7E0: rigid rock trucks.

Selected configuration figures
Configuration	Documented field and quantity
HD405-7	Horse Power: SAE J1995 518 hp Overall Length 27.75 ft
HD605-7E0	Horse Power: SAE J1995 739 hp Overall Length 30.7 ft

HD405-7 and HD605-7E0 specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Komatsu	HD405-7 and HD605-7E0	2	HD405-7 and HD605-7E0

Dimensions and weight
Specification	HD405-7	HD605-7E0
Overall Length	27.75 ft	30.7 ft
Wheelbase	12.33 ft	14.11 ft
Turning Radius @ Centre Front Tyre	23.63 ft	27.89 ft

Specification	HD405-7
Overall Width	12 ft
Overall Height	12.64 ft

Specification	HD605-7E0
Height To Top Of Cab	14.44 ft
Width Over Tires	13.9 ft

Electrical System
Specification	HD405-7	HD605-7E0
Alternator	4V, 50 Ah	24V, 75 Ah
Batteries	2 x 12V, 170 Ah	2 x 12V, 200 Ah
Starter Motor	11 kW	24V, 7.5 kW

Specification	HD405-7
Electric Circuit Breaker	24 Volt

Body
Specification	HD405-7	HD605-7E0
Capacity Struck	26.2 yd3	37.9 yd3
Heaped (2:1, SAE)	35.7 yd3	52.3 yd3
Payload	5.241.0 metric tons 40 US tons	55 metric tons 61 US tons
Material	150 kg/mm2 227520 psi high-tensile-strength steel	160 kg/mm2 227,520 psi high tensile strength steel
Material Thickness-Bottom	1 in	1 in
Material Thickness-Front	0.7 in	0.7 in
Material Thickness-Sides	0.6 in	0.6 in
Target Area	5,590 mm x 3380 mm 18\\\'4\\\" x 11\\\'1\\\"	6,600 mm x 3870 mm 21\'8\" x 12\'8\"
Heating	Exhaust heating	Exhaust heating
Structure	V-shape body	V-shape body with V-bottom
Dumping Angle	48 degrees	48 degrees
Height At Full Dump	26 ft	28.1 ft

Engine
Specification	HD405-7	HD605-7E0
Lubrication System	Method- Gear pump, force-lubrication, Filter-Full-flow type	Method- Gear pump, force-lubrication, Filter-Full-flow type
Number Of Cylinders	6	6
Engine Model	SAA6D140E-5	SAA6D170E-5
Engine Type	Water-cooled, 4-cycle	Water-cooled, 4-cycle
Air Cleaner	Dry type with double elements and precleaner, plus dust indicator	Dry type with double elements and precleaner, plus dust indicator
Governor	Electronically controlled	Electronically controlled
Power Measured @	2,000 rpm	2,000 rpm
Max Torque	1,598 lb-ft	339 kg•m 2,452 lb ft
Displacement	930 cu in	1,413 cu in
Aspiration	Turbo-charged,air-to-air after-cooled,cooled EGR	Turbo-charged,air-to-air after-cooled,cooled EGR
Bore And Stroke	140 mm x 165 mm 5.5\" x 6.5\"	170 mm x 170 mm 6.69\" x 6.69\"
Horse Power: SAE J1995	518 hp	739 hp
Horse Power: ISO 9249 / SAE J1349	498 hp	715 hp
Fan Drive Type	Mechanical	Mechanical
Fuel System	Direct injection	Direct injection

Capacities
Specification	HD405-7	HD605-7E0
Fuel Tank	127.9 gal	206.1 gal
Final Drive	7.9 gal	11.1 gal
Hydraulic System	34.1 gal	32.2 gal
Engine Oil	13.2 gal	21.1 gal
Torque Converter, Transmission And Retarder Cooling	23.8 gal	56.8 gal
Differentials	11.9 gal	25.1 gal
Suspension	11.7 gal	14.7 gal

Power Train
Specification	HD405-7
Power Train Type	Transmission, full automatic, electric control with clutch modulation. - Differential, standard

Transmission and speeds
Specification	HD405-7	HD605-7E0
Max Speed	43.5 mph	43.5 mph
Torque Converter	3-elements, 1-stage, 2-phase	3-elements, 1-stage, 2-phase
Transmission	Full-automatic, planetary type	Full-automatic, planetary type
Speed Range	7 speeds forward and 1 reverse	7 speeds forward and 1 reverse
Lockup Clutch	Wet, single-disc clutch	Wet, single-disc clutch
Forward	Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gears	Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gears
Reverse	Torque converter drive	Torque converter drive
Shift Control	Electronic shift control with automatic clutch modulation in all gear	Electronic shift control with automatic clutch modulation in all gear

Weights
Specification	HD405-7	HD605-7E0
Gross Weight	165,520 lb	101,854 lb
Empty Weight	75,840 lb	242,905 lb
Weight Distribution Front - Empty	50.7 %	47 %
Weight Distribution Rear - Empty	49.3 %	53 %
Weight Distribution Front - Loaded	32.8 %	32 %
Weight Distribution Rear - Loaded	67.2 %	68 %

Specification	HD405-7
Loaded Weight	164,200 lb

Tires
Specification	HD405-7	HD605-7E0
Standard Tire	18.00 R33	24.00-R35

Axles
Specification	HD405-7	HD605-7E0
Final Drive	Planetary gear	Planetary gear
Differential	3.125	3.538
Planetary	4.737	4.737
Rear	Full-floating	Full-floating

Hydraulic System
Specification	HD405-7	HD605-7E0
Hoist Cylinder	Twin, 2-stage telescopic type	Twin, 2-stage telescopic type
Relief Pressure	20.6 MPa 210 kg/cm2 2,990 psi	20.6 MPa 210 kg/cm2 2,990 psi
Hoist Time	10 sec	11.5 sec

Brakes
Specification	HD405-7	HD605-7E0
Parking Brake	Spring applied, caliper disc type	Spring applied, multiple-disc type
Service Brake	Front- Fully hydraulic control, caliper disc type; Rear- Fully hydraulic, oil-cooled, multiple-disc type	Front- Fully hydraulic control, caliper disc type; Rear- Fully hydraulic, oil-cooled, multiple-disc type
Retarder	Oil-cooled, multiple-disc rear brakes act as 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	Manual pedal operation. When hydraulic pressure drops below the rated level, parking brake is automatically actuated
Brake Surface	Front- 968 cm2 150 in2 ; Rear - 50847 cm2 7,881 in2	Front- 1936 cm2 300 in2 ; Rear - 64230 cm2 9,956 in2

Variants — Source comparison annotation
Source guide	Differing-field count reported
HD405-7 and HD605-7E0	44

Reference directory classification
Equipment group	rigid rock truck

HD405-7 and HD605-7E0: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	rigid rock truck	Komatsu and the HD605 line that the HD605-7E0 belongs to (no title names the exact model). That is too few titles to say what owners mostly ask about, so the most recent are listed instead	2

Komatsu Hd605 7eo Blower Motor (Heavy Equipment Forums, 2018-02-01)
Komatsu Hd605 7 (Heavy Equipment Forums, 2009-02-16)

Used market for the HD405-7 and HD605-7E0 — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Komatsu rigid rock truck	10

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
HD405-7	8	2006 to 2014	$3,871	$98,265	$79,705	None shown
HD605-7E0	2	2008 to 2012	$111,588	$111,588	$111,588	None shown

HD405-7 and HD605-7E0: recall reference — Dated CPSC search
Search date	Database	Names queried	Search result
2026-09-24	U.S. Consumer Product Safety Commission	Komatsu together with the rigid rock truck HD405-7, HD605-7E0	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Komatsu HD405-7 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu HD605-7E0 — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Komatsu HD405-7 and HD605-7E0 — Heavy Equipment Forums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Komatsu HD405-7 — MachineryTrader. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Komatsu — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

Komatsu HD405-7 and HD605-7E0: Configuration records

HD405-7

Specification	Source figure
Dimensions and weight
Overall Length	27.75 ft
Overall Width	12 ft
Overall Height	12.64 ft
Wheelbase	12.33 ft
Turning Radius @ Centre Front Tyre	23.63 ft
Electrical System
Alternator	4V, 50 Ah
Batteries	2 x 12V, 170 Ah
Starter Motor	11 kW
Electric Circuit Breaker	24 Volt
Body
Capacity Struck	26.2 yd3
Heaped (2:1, SAE)	35.7 yd3
Payload	5.241.0 metric tons 40 US tons
Material	150 kg/mm2 227520 psi high-tensile-strength steel
Material Thickness-Bottom	1 in
Material Thickness-Front	0.7 in
Material Thickness-Sides	0.6 in
Target Area	5,590 mm x 3380 mm 18'4" x 11'1"
Heating	Exhaust heating
Structure	V-shape body
Dumping Angle	48 degrees
Height At Full Dump	26 ft
Engine
Lubrication System	Method- Gear pump, force-lubrication, Filter-Full-flow type
Number Of Cylinders	6
Engine Model	SAA6D140E-5
Engine Type	Water-cooled, 4-cycle
Air Cleaner	Dry type with double elements and precleaner, plus dust indicator
Governor	Electronically controlled
Power Measured @	2,000 rpm
Max Torque	1,598 lb-ft
Displacement	930 cu in
Aspiration	Turbo-charged,air-to-air after-cooled,cooled EGR
Bore And Stroke	140 mm x 165 mm 5.5" x 6.5"
Horse Power: SAE J1995	518 hp
Horse Power: ISO 9249 / SAE J1349	498 hp
Fan Drive Type	Mechanical
Fuel System	Direct injection
Capacities
Fuel Tank	127.9 gal
Engine Oil	13.2 gal
Torque Converter, Transmission And Retarder Cooling	23.8 gal
Differentials	11.9 gal
Suspension	11.7 gal
Power Train
Power Train Type	Transmission, full automatic, electric control with clutch modulation. - Differential, standard
Transmission and speeds
Max Speed	43.5 mph
Torque Converter	3-elements, 1-stage, 2-phase
Transmission	Full-automatic, planetary type
Speed Range	7 speeds forward and 1 reverse
Lockup Clutch	Wet, single-disc clutch
Forward	Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gears
Reverse	Torque converter drive
Shift Control	Electronic shift control with automatic clutch modulation in all gear
Weights
Gross Weight	165,520 lb
Empty Weight	75,840 lb
Loaded Weight	164,200 lb
Weight Distribution Front - Empty	50.7 %
Weight Distribution Rear - Empty	49.3 %
Weight Distribution Front - Loaded	32.8 %
Weight Distribution Rear - Loaded	67.2 %
Tires
Standard Tire	18.00 R33
Axles
Differential	3.125
Planetary	4.737
Rear	Full-floating
Hydraulic System
Hoist Cylinder	Twin, 2-stage telescopic type
Relief Pressure	20.6 MPa 210 kg/cm2 2,990 psi
Hoist Time	10 sec
Brakes
Parking Brake	Spring applied, caliper disc type
Service Brake	Front- Fully hydraulic control, caliper disc type; Rear- Fully hydraulic, oil-cooled, 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- 968 cm2 150 in2 ; Rear - 50847 cm2 7,881 in2
Additional specifications
Final Drive	7.9 gal
Hydraulic System	34.1 gal

Source

HD605-7E0

Specification	Source figure
Dimensions and weight
Overall Length	30.7 ft
Wheelbase	14.11 ft
Turning Radius @ Centre Front Tyre	27.89 ft
Height To Top Of Cab	14.44 ft
Width Over Tires	13.9 ft
Electrical System
Alternator	24V, 75 Ah
Batteries	2 x 12V, 200 Ah
Starter Motor	24V, 7.5 kW
Body
Capacity Struck	37.9 yd3
Heaped (2:1, SAE)	52.3 yd3
Payload	55 metric tons 61 US tons
Material	160 kg/mm2 227,520 psi high tensile strength steel
Material Thickness-Bottom	1 in
Material Thickness-Front	0.7 in
Material Thickness-Sides	0.6 in
Target Area	6,600 mm x 3870 mm 21'8" x 12'8"
Heating	Exhaust heating
Structure	V-shape body with V-bottom
Dumping Angle	48 degrees
Height At Full Dump	28.1 ft
Engine
Lubrication System	Method- Gear pump, force-lubrication, Filter-Full-flow type
Number Of Cylinders	6
Engine Model	SAA6D170E-5
Engine Type	Water-cooled, 4-cycle
Air Cleaner	Dry type with double elements and precleaner, plus dust indicator
Governor	Electronically controlled
Power Measured @	2,000 rpm
Max Torque	339 kg•m 2,452 lb ft
Displacement	1,413 cu in
Aspiration	Turbo-charged,air-to-air after-cooled,cooled EGR
Bore And Stroke	170 mm x 170 mm 6.69" x 6.69"
Horse Power: SAE J1995	739 hp
Horse Power: ISO 9249 / SAE J1349	715 hp
Fan Drive Type	Mechanical
Fuel System	Direct injection
Capacities
Fuel Tank	206.1 gal
Engine Oil	21.1 gal
Torque Converter, Transmission And Retarder Cooling	56.8 gal
Differentials	25.1 gal
Suspension	14.7 gal
Transmission and speeds
Max Speed	43.5 mph
Torque Converter	3-elements, 1-stage, 2-phase
Transmission	Full-automatic, planetary type
Speed Range	7 speeds forward and 1 reverse
Lockup Clutch	Wet, single-disc clutch
Forward	Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gears
Reverse	Torque converter drive
Shift Control	Electronic shift control with automatic clutch modulation in all gear
Weights
Gross Weight	101,854 lb
Empty Weight	242,905 lb
Weight Distribution Front - Empty	47 %
Weight Distribution Rear - Empty	53 %
Weight Distribution Front - Loaded	32 %
Weight Distribution Rear - Loaded	68 %
Tires
Standard Tire	24.00-R35
Axles
Differential	3.538
Planetary	4.737
Rear	Full-floating
Hydraulic System
Hoist Cylinder	Twin, 2-stage telescopic type
Relief Pressure	20.6 MPa 210 kg/cm2 2,990 psi
Hoist Time	11.5 sec
Brakes
Parking Brake	Spring applied, multiple-disc type
Service Brake	Front- Fully hydraulic control, caliper disc type; Rear- Fully hydraulic, oil-cooled, 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- 1936 cm2 300 in2 ; Rear - 64230 cm2 9,956 in2
Additional specifications
Final Drive	11.1 gal
Hydraulic System	32.2 gal

Source

More in Komatsu: HD605-5, HD325-7–HD1500-7, HD680–HD1200M-1.

Komatsu HD405-7 and HD605-7E0 specifications

Sources for this page

Komatsu HD405-7 and HD605-7E0: Configuration records