Designed for efficient and highly productive cycle times, the HD325-8 will become your workhorse on the job. Built with MacPherson-strut-type front suspension, this machine delivers a tight turning radius and offers excellent maneuverability and operator comfort.
*Compared to HD325-7
Model | Komatsu SAA6D140E-7* |
Type | Water-cooled, 4-cycle |
Aspiration | Variable geometry, turbo-charged, air-to-air after-cooled, cooled Exhaust Gas Recirculation (EGR) |
Number of cylinders | 6 |
Bore x stroke | 140 x 165 mm |
Piston displacement | 15.24 L |
Horsepower: | |
SAE J1995 | 386 kW |
ISO 9249 /SAE J1349 | 383 kW |
Rated rpm | 2 000 rpm |
Fan drive type | Hydraulic |
Maximum torque | 221 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, plus dust indicator |
*EPA Tier 4 Final emissions certified
Model | Komatsu SAA6D140E-7* |
Type | Water-cooled, 4-cycle |
Aspiration | Variable geometry, turbo-charged, air-to-air after-cooled, cooled Exhaust Gas Recirculation (EGR) |
Number of cylinders | 6 |
Bore x stroke | 5.5 x 6.5 in |
Piston displacement | 930 in³ |
Horsepower: | |
SAE J1995 | 518 HP |
ISO 9249 /SAE J1349 | 514 HP |
Rated rpm | 2,000 rpm |
Fan drive type | Hydraulic |
Maximum torque | 1,600 lbs.-ft. |
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, plus dust indicator |
*EPA Tier 4 Final emissions certified
Torque converter | Three-elements, one-stage, two-phase |
Transmission | Full-automatic, planetary type |
Speed range | Seven speeds forward and one 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 | 68 kph |
Torque converter | Three-elements, one-stage, two-phase |
Transmission | Full-automatic, planetary type |
Speed range | Seven speeds forward and one 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 | 42.3 mph |
Rear axle | Full-floating |
Final drive | Planetary gear |
Ratios: | |
Differential | 3.125 |
Planetary | 4.737 |
Rear axle | Full-floating |
Final drive | Planetary gear |
Ratios: | |
Differential | 3.125 |
Planetary | 4.737 |
Independent, hydropneumatic suspension cylinder with fixed throttle to dampen vibration
Effective cylinder stroke (front suspension) | 250 mm |
Rear axle oscillation: | |
Oil stopper | 6.8° |
Mechanical stopper | 8.1° |
Independent, hydropneumatic suspension cylinder with fixed throttle to dampen vibration
Effective cylinder stroke (front suspension) | 9.8 in |
Rear axle oscillation: | |
Oil stopper | 6.8° |
Mechanical stopper | 8.1° |
Type | Fully hydraulic power steering with two double-acting cylinder |
Supplementary steering | Automatic/manual control (meets ISO 5010, SAE J1511 and SAE J53) |
Minimum turning radius | 7.2 m |
Maximum steering angle | 43° |
Type | Fully hydraulic power steering with two double-acting cylinder |
Supplementary steering | Automatic/manual control (meets ISO 5010, SAE J1511 and SAE J53) |
Minimum turning radius | 23 ft. 7 in |
Maximum steering angle | 43° |
Dimensions comply with ISO 3471 and SAE J1040-1988c ROPS (Roll-Over Protective Structure) standards.
Dimensions comply with ISO 3471 and SAE J1040-1988c ROPS (Roll-Over Protective Structure) standards.
Brakes meet ISO 3450 and SAE 1473 standards
Service brakes: | |
Front | Dry type, single disc type full hydraulic |
Rear | Wet type, multiple disc type, full hydraulic |
Parking brake | Dry type, single disc type, spring operated, hydraulic releasing type |
Retarder | Oil-cooled, multiple-disc type |
Secondary brake | Manual pedal operation When hydraulic pressure drops below the rated level, parking brake is automatically actuated |
Brake surface: | |
Front | 968 cm2 |
Rear | 50 847 cm2 |
Brakes meet ISO 3450 and SAE 1473 standards
Service brakes: | |
Front | Dry type, single disc type full hydraulic |
Rear | Wet type, multiple disc type, full hydraulic |
Parking brake | Dry type, single disc type, spring operated, hydraulic releasing type |
Retarder | Oil-cooled, multiple-disc type |
Secondary brake | Manual pedal operation When hydraulic pressure drops below the rated level, parking brake is automatically actuated |
Brake surface: | |
Front | 150 in2 |
Rear | 7,881 in2 |
Type
Box-sectioned structure
Type
Box-sectioned structure
Capacity: | |
Struck | 16.9m3 |
Heaped (2:1 ,SAE) | 24 m3 |
Payload, maximum | 36.5 metric tons |
Material (high-tensile-strength steel) | 130 kg/mm2 |
Structure | V-shape body |
Material thickness: | |
Bottom | 16 mm |
Front | 12 mm |
Sides | 9 mm |
Target area (inside length x width) | 5 515 x 3 380 mm |
Dumping angle | 48° |
Height at full dump | 8 030 mm |
Heating | Exhaust heating |
Capacity: | |
Struck | 22.1 yd3 |
Heaped (2:1 ,SAE) | 31.4 yd3 |
Payload, maximum | 40.3 US tons |
Material (high-tensile-strength steel) | 184,860 psi |
Structure | V-shape body |
Material thickness: | |
Bottom | 0.63 in |
Front | 0.47 in |
Sides | 0.35 in |
Target area (inside length x width) | 18 ft. 1 in x 11 ft. 1 in |
Dumping angle | 48° |
Height at full dump | 26 ft. 4 in |
Heating | Exhaust heating |
Hoist cylinder | Twin, 2-stage telescopic type |
Relief pressure | 20.6 MPa 210 kg/cm2 |
Hoist time | 10 s |
Hoist cylinder | Twin, 2-stage telescopic type |
Relief pressure | 2,990 psi |
Hoist time | 10 s |
Empty weight | 34 180 kg |
Max. gross vehicle weight: | |
Standard tire | 70 760 kg |
Not to exceed max. gross vehicle weight, including options, fuel | |
Weight distribution: | |
Empty: Front axle | 56.5% |
Rear axle | 43.5% |
Loaded: Front axle | 33.7% |
Rear axle | 66.3% |
Empty weight | 75,354 lbs. |
Max. gross vehicle weight: | |
Standard tire | 155,999 lbs. |
Not to exceed max. gross vehicle weight, including options, fuel | |
Weight distribution: | |
Empty: Front axle | 56.5% |
Rear axle | 43.5% |
Loaded: Front axle | 33.7% |
Rear axle | 66.3% |
Standard tire: 18.00 R33
Standard tire: 18.00 R33
Fuel tank | 456 L |
DEF tank | 34.7 L |
Engine oil | 50 L |
Torque converter, transmission and retarder cooling | 112 L |
Differential | 45 L |
Final drive (left and right) | 30 L |
Hydraulic system | 120 L |
Suspension (total) | 44.2 L |
Fuel tank | 120.5 US gal |
DEF tank | 9.2 US gal |
Engine oil | 13.2 US gal |
Torque converter, transmission and retarder cooling | 29.6 US gal |
Differential | 11.9 US gal |
Final drive (left and right) | 7.9 US gal |
Hydraulic system | 31.7 US gal |
Suspension (total) | 11.7 US gal |