Komatsu Trucks HD325-7

HD325-7 Off-Highway Truck

The HD325-7 is a 40 ton capacity workhorse. Very maneuverable, the MacPherson front suspension give the HD325-7 a turning radius tighter than other trucks in its class. With two working modes the operator can most effectively take advantage of the fully automatic seven speed transmission with lock-up feature. A hydropneumatic suspension gives the operator a comfortable ride while maintaining more material in the bed for more production.

Engine
Model		KOMATSU SAA6D140E-5
Type		Water-cooled, 4-cycle
Aspiration		Turbo-charged, air-to-air after-cooled, cooled EGR
Number of cylinders		6
Bore x stroke	5.5" x 6.5"	140 mm x 165 mm
Piston displacement	930 in³	15.24 ltr
Horsepower:
SAEJ1995 - Gross	518 HP	386 kW
ISO 9249 / SAEJ1349 - Net	498 HP	371 kW
Rated rpm		2,000 rpm
Fan drive type		Mechanical
Maximum torque	1,600 lbÃ¢â‚¬Â¢ft	221 kg-m
Fuel system		Direct injection
Governor		Electronically controlled
Lubrication system :		Full-flow type
Method		Gear pump, force-lubrication
Filter		Full-flow type
Air cleaner		Dry type with double elements and precleaner, plus dust indicator
EPA Tier 3 and EU Stage 3A emission certified.

Transmission
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-disk 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 gears
Maximum travel speed	43.5 mph	70 km/h

Axles
Rear axle	Full-floating
Final drive	Planetary gear
Ratios:
Differential	3.125
Planetary	4.737

Suspension System
Type		Fully hydraulic power steering with two double-acting cylinder
Supplementary steering		Manual control (meets ISO 5010, SAE J1511 and SAE J53)
Auxiliary steering		SAE automatic
Minimum turning radius	23'7''	7.2 m
Maximum steering angle		43°

Cab
Dimensions comply with ISO 3471 and SAE J1040-1988c ROPS (Roll-Over Protective Structure) standards.

Main Frame
Type	Box-sectioned structure

Brakes
Brakes meet ISO 3450 and SAE 1473 standards
Service brakes:
Front		Full-hydraulic control, caliper disc type
Rear		full-hydraulic, 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	50 in ²	968 cm²
Rear	7,881 in ²	50847 cm²

Body
Capacity:
Struck	23.5 yd³	18 m³
Heaped (2:1 ,SAE)	31.4 yd³	24 m³
Payload, maximum	40 U.S. tons	36.5 metric tons
rated	35 U.S. tons	32 metric tons
Material : (high-tensile-strength steel)	184,860 ps	130 kg/mm²
Structure		V-shape body
Material thickness:
Bottom
Struck	0.75"	19 mm
Front	0.47"	12 mm
Sides	0.35"	9 mm
Target area (inside length x width)	18'1" x 11'1"	5500 mm x 3380 mm
Dumping angle		48°
Height at full dump	26'0"	7925 mm
Heating		Exhaust heating

HyDRaulic System
Hoist cylinder		Twin, 2-stage telescopic type
Relief pressure	2,990 psi	210 kg/cm²
Hoist time		10 sec

Weight
Empty weight	69,700 lb	31600 kg
Gross vehicle weight with 32 metric ton (35 U.S.ton) payload	140,390 lb	63680 kg
Max. gross vehicle weight:
Standard tire	152,740 lb	69280 kg
Not to exceed max. gross vehicle weight, including options, fuel
Weight distribution:
Empty: Front axle		51.7%
Rear axle		48.3%
Loaded: Front axle		33%
Rear axle		67%

tires
Standard Tires		18.00-33-32PR

Service Refill Capacities
Fuel tank	127.9 U.S. Gal	484 ltr.
Engine oil	13.2 U.S. Gal	50ltr
Torque converter, transmission and retarder cooling	23.8 U.S. Gal	90 ltr
Differential	11.9 U.S. Gal	45 ltr
Final drive (left and right)	7.9 U.S.	30 ltr
Hydraulic system	34.1 U.S. gal	129 ltr
Suspension (total)	11.7 U.S. gal	44.2 ltr