Features
High productivity
The result of total performance: High performance, minimum downtime, and easy operation
Dependable and high-performance components
• Komatsu diesel engine delivers high-output and direct injection system provides high fuel efficiency
• Full-automatic TORQFLOW transmission:
A microcomputer built into the shift controller automatically selects the optimum gear position according to travel speed, load and road conditions assuring effort-free operation.
• High-performance, durable brakes: Sealed, oilcooled, multiple-disc brakes on rear wheels are designed for extended operation. The largecapacity rear wheel brakes also act as retarders as a precaution against engine overrunning when descending steep inclines.
• High maneuverability: The MacPherson strut type front suspension system has a special A-frame between each wheel and the main frame. The wider space created between the front wheels and the main frame increases the turning angle of the wheels. The larger this turning angle, the smaller the turning radius of the truck.
• Extra sturdiness: Box-section, ladder type frame construction of high-tensile-strength steel plate and cast steel offer unfaltering durability for long service.
• Rigorous dump body design : The dump body is made of 130 kg/mm2 (184,900 PSI) high-tensilestrength steel for excellent rigidity and reduced maintenance costs. The V-shape design also increases structural strength. The side and bottom plates of the dump section are reinforced with ribs for added strength.
• Instrument panel monitor:
The functions of "User code display" to show machine troubles and remedy for them and "Service code display" to show the self-diagnosis result are added to the electronic display panel for easier control and higher availability of the machine.
• Maintenance monitor : The maintenance control function automatically checks key components before the truck is started. For even simpler and foolproof maintenance, filter and oil replacement times are suggested. Thus, failures are detected before they become critical. [Except HD255]
Easy maintenance
Greasing points have been centralized.
Fuel and engine oil filters are also located together on the right-hand remote mount for easy, remote inspection from the ground.
Specifications
1. Japan source
* Weight includes lubricants, coolant, full fuel tank and standard body.
** Max. gross vehicle weight, including optional equipment, lubricants, coolant, full fuel tank and payload, with large tires installed, shall not be exceeded .
Dimensions
* Includes canopy spill guard.
** USA source
Use of Performance Curve
How to use the travel performance curve
For assessing a vehicle's grade-ability, travel speed, rim pull, etc. First, draw a vertical line according to the vehicle's weight (A) and mark the point (B) corresponding to total resistance (the sum of rolling resistance and grade resistance). Next, draw a horizontal line from (B), then mark (C) where the line intersects the rim pull curve and read (E) for the rim pull. For travel speed (D), draw a vertical line downward from (C).
For instance, when traveling an 8% gradient and encountering a 5% rolling resistance, a vehicle with a 32 ton (35-U.S. ton) payload should have a rim pull of 8 tons (17,640 lb) and travel at a speed of 15 km/h (9.3 MPH) in forward 2nd gear.
How to use the brake performance curve
These curves are provided for establishing the maximum speed and gearshift position for safe descent of a road with a given gradient at a given distance. For example, let us assume the total resistance is –15% (gradient resistance –16% plus rolling resistance +1%) on the 1500m (4,920 ft) graph.
First, draw a vertical line from the total vehicle weight (A) so that it crosses the slanted line of –15% total resistance (B). From (B), draw a horizontal line to the left and it will cross the stair curve at (C). Finally, draw a vertical line from (C) and read (D) the maximum speed for driving safely down the slope. In this case, a vehicle with a 32-ton payload should travel at approximately 22km/h (13.7MPH) with the F3
gear.
HD255-5
Performance Curve
Travel Performance Curve
Brake performance
HD325-6
Performance Curves
Travel Performance Curve
Brake performance
HD325-6 4WD
Performance Curves
Travel Performance Curve
Brake performance
HD405-6
Performance Curves
Travel Performance Curve
Brake performance
HD465-7
Performance Curves
Travel Performance Curve
Brake performance
HD605-7
Performance Curves
Travel Performance Curve
Brake performance
HD785-5
Performance Curves
Travel Performance Curve
Brake performance
HD985-5
Performance Curves
Travel Performance Curve
Brake performance
HD1200-1
Performance Curves
Travel Performance Curve
Brake performance
HD1200-1D
Performance Curves
Travel Performance Curve
Brake performance
HD1500-5
Performance Curves
Travel Performance Curve
Brake performance
630E
Performance Curves
Travel Performance Curve
Brake performance
730E
Performance Curves
Travel Performance Curve
Brake performance
830E
Performance Curves
Travel Performance Curve
Brake performance
930E-2
Performance Curves
Travel Performance Curve
Brake performance
Attachments and Options
Tire Selection
TIRE SELECTION
Tire availability
Komatsu Dump Trucks employ the tubeless tire only.
Every tire size is classified into E3 or E4 codes.
Either E3 or E4 code had CR, GP or HR characteristics to meet specific operating conditions.
The relation between the tire characteristics and operating conditions is shown in the table.
NOTE:
*When installing radial tires, please use the special rim for radial tire.
Tire characteristics and operating conditions
TMPH RATING
Where the ambient temperature in an operating environment is high or where a long haul or high-speed drive is required, the standard tires are sometimes unsuitable because of their small TMPH. Under the above operating conditions, it is recommended that the optimum tires be determined after obtaining TMPH by applying the formulas stated in the section 15 and referring to the following table.
NOTE:
The TMPH rating is based on U.S. ton (not on metric ton)
A TMPH = A TKPH ÷ 1.46
Table 1-1 TKPH for main types of bias tire
NOTE:
1. The TKPH in the table is the value at 38°C an ambient temperature. (The value as of February, 2000.) When the distance for the round trip exceeds 5 km, the tire life is governed by the travel conditions, so check with the tire maker for details of the TKPH when selecting the tires.
2. The value for TKPH is reviewed from time to time by the tire maker, so consult the maker for the latest values.
3. For details of the TKPH value and tire specifications for conditions not given in this table, please consult the tire maker.
Body selection
1. Body selection
When it comes to selecting the body, it is necessary to consider the specific work application, size of rocks, specific gravity of material and loading machines etc. Select the optimum body according to the chart shown below. If similar dump trucks are working at a specific job sites, please refer to the body types used when making selection.
1) Liner-less body
• Liner-less body is suitable for job sites where loading of sandy or rough soil.
• Liner is not installed.
2) Rock body
• Rock body is suitable for job sites requiring the handling of rocks such as macadam, in limestone mines and for civil engineering etc.
• Total face of inner body is lined with steel liners.
3) Rubber liner body
• Rubber liner body is suitable for job sites where large diameter rocks such as ripraps are loaded.
• Rubber liners are installed on the bottom face of the body and steel liners are installed on the other faces.
Production
TRAVEL TIME (One way)
Estimated Production (Metric ton per hour)
* Actual production = (Estimated production) × (Job efficiency)
Job efficiency (E)
Estimated Production (U.S ton per hour)
