CEN00015-02 HD255-5 RIGID DUMP TRUCK

HORSEPOWER
GROSS 241 kW 323 HP
NET 235 kW 316 HP
MAX. GROSS VEHICLE WEIGHT
47525 kg 104,770 lb
HD255-5
HD
WA
250
255
OFF-HIGHWAY TRUCK
Photos may include optional equipment.
HD255-5
O F F - H I G H WAY T R U C K
PRODUCTIVITY FEATURES
Powerful KOMATSU SAA6D125E-3 Engine
This engine delivers quicker acceleration and higher travel
speed with the highest output per weight. EPA Tier 2 and
EU Stage 2 emissions
certified engine includes
advanced technology
Common-Rail fuel injection (CRI) system, air-toair aftercooler and efficient turbocharger. High
torque at low speed,
impressive acceleration,
and low fuel consumption
ensure maximum productivity.
6-Speed, Fully Automatic K-ATOMiCS
Transmission with Shift-Limiter Function
The K-ATOMiCS (Komatsu Advanced Transmission with Optimum Modulation Control System) automatically selects optimum gear according to vehicle speed, engine speed and
shift position you’ve chosen. The standard equipment shiftlimiter function allows first gear to be maintained when
descending steep grades.
Oil-Cooled Multiple-Disc Retarder and Exhaust
Brake
The large capacity continuously oilcooled wet multiple disc retarder
and the exhaust brake are standard equipment and enable
safe and continuous downhill
drive travel.
OFF-HIGHWAY TRUCK
HD255-5
OPERATOR ENVIRONMENT
Wide, Spacious Cab with Excellent Visibility
Suspension Seat
The integrated cab ROPS structure conforms to ISO 3471
and SAE J1040 standards. The operator compartment
makes it very easy and comfortable for the operator to use all
the controls. The wide windshield
and large rearview mirrors provide superior visibility and safe
operation.
The standard equipment fabric covered suspension seat is
adjustable to operator’s weight. The suspension seat dampens vibrations transmitted from the chassis and reduces
operator fatigue as well as holding the operator securely to
assure confident operation.
High Strength Quarry Body
for Easy Loading Operation
ROPS
The robust body is constructed of thick wear-resistant steel
having 500 Brinell hardness. The V-shape, flat-bottom design
also increases structural strength, and provides excellent
load stability.
Outstanding Small Turning Radius
The front suspension has a special A-frame between each
wheel and the main frame. The
wider space created between
A-frame
the front wheels and the
main frame increases the
turning angle of the wheels.
7.0m 23'0"
The larger this turning
angle, the smaller the turning radius of the truck
allowing the truck to be
positioned quickly and easily.
Automatic Supplementary Steering and Secondary
Brakes
Photo may include optional equipment.
‹
⁄
¤
Automatic supplementary steering and secondary brakes are
standard equipment.
If an abnormality occurs in the steering hydraulic circuits or
engine stops suddenly, this supplementary steering system
works automatically and enables continued steering operation.
Steering: ISO 5010, SAE J1511, SAE J53
Brakes: ISO 3450, SAE J1473
Hydropneumatic Suspension for All Terrains
The hydropneumatic
suspension assures
comfortable ride even
over rough terrain and
ensures maximum productivity and operator
confidence.
⁄ Large-sized rear view mirror
¤ Rubber mudguard
‹ Rubber mudguard
(at right platform)
2
3
HD255-5
O F F - H I G H WAY T R U C K
OFF-HIGHWAY TRUCK
EXCELLENT RELIABILITY AND DURABILITY
EASY MAINTENANCE
Komatsu Components
High-Rigidity Frames
Extended Oil Change Intervals
Komatsu manufactures engine, torque converter, transmission, hydraulic units, and electrical devices on this dump truck.
Komatsu dump trucks are manufactured with an integrated
production system under a strict quality control system.
Cast-steel components are used in the main frame for highstress areas where loads and shocks are most concentrated.
It provides a superior reliability and durability.
In order to minimize operating costs, oil change intervals
have been extended.
Engine oil change intervals: 250 hours / 500 hours
Wet Multiple-Disc Brakes
High Strength Body
The side plates of the body are reinforced with cross ribs to
increase the rigidity. The ribs of the bottom plate also greatly
increase the rigidity. Furthermore, the body is made of new
steel Komatsu developed in cooperation with a Japanese
steel manufacturer having the best steel manufacturing technologies in the world. This ultra
hard wear-resisting steel has
hardness 25% higher than the
14mm 0.55"
16mm 0.63"
conventional steel and about
25mm 0.98"
2.5 times higher than the common lining steel.
Sealed DT Connectors
Main harnesses and controller connectors are
equipped with sealed DT
connectors providing high
reliability, water resistance
and dust resistance.
The wet multiple-disc brakes on rear wheels make maintenance and adjustment unnecessary.
Cast steel
HD255-5
Centralized Arrangement
of Filters and Greasing
Points
The engine oil filter and fuel filter are centralized on the left
side of the machine so that
they can be serviced easily.
Flange Type Rim
The greasing points are also
centralized at two locations.
The flange type rims provide easy removal/installation of the
tires.
These filter and greasing maintenances can be done on the
ground.
Flat Face-to-Face O-Ring Seals
Flat face-to-face O-ring seals
are used to securely seal
hydraulic hose and fuel line
hose connections and to prevent oil or fuel leakage.
Nipple
VALUE-ENHANCING OPTIONS
Hose
O-ring
Auto Retard Speed Control (ARSC)
Desiccant Type Air Dryer
ARSC allows the operator to simply set the downhill travel
speed and go down slopes at a constant speed. As a result,
the operator can concentrate on steering. The speed can be
set at increments of 1 km/h 0.6 MPH per click (±5 km/h 3.1
MPH of maximum speed adjustment) to match the optimum
speed for the slope. Also, since the retarder cooling oil temperature is always monitored, the speed is automatically
lowered.
Desiccant type air dryer is available as
an option. It removes moisture and oil
in the compressed air provided from the
air compressor. Therefore, reliability
and durability of the air circuit is
improved.
Settable range: 7 km/h 4.3 MPH to 45 km/h 28.0 MPH
Display of set travel speed
Front Brake Ratio Valve
The front brake ratio valve lowers the air pressure at the beginning of braking operations to limit the efficiency of the
front brake to reduce heating and wear of the brake pad. If
the brake pedal is pressed more than half, however, the air
pressure isn’t lowered, and the front brake works as
designed.
Automatic Greasing System
ARSC set lever
UP
CANCEL
This releases operators and mechanics from burdensome
greasing work on the ground. Maintenance time is shortened, and productivity is enhanced.
SET
DOWN
Go down slope at
constant speed
4
5
O F F - H I G H WAY T R U C K
SPECIFICATIONS
AXLES
Rear axle type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-floating
Final drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Planetary gear
Ratios:
Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.900
Planetary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.941
SUSPENSION SYSTEM
Independent hydropneumatic suspension cylinder with fixed throttle to
dampen vibration.
STEERING SYSTEM
Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . Fully hydraulic power steering
with two double-acting cylinders
Supplementary steering . . . . . . . Automatic control with manual switch
(meets ISO 5010, SAE J1511 and SAE J53)
Minimum turning radius . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0 m 23'0"
CAB
Dimensions comply with ISO 3471 and SAE J1040-1988c ROPS
(Roll-Over Protective Structure) standards.
MAIN FRAME
6
Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Box-sectioned structure
Capacity:
Struck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.2 m3 17.3 yd3
Heaped (2:1, SAE) . . . . . . . . . . . . . . . . . . . . . . . 17.7 m3 23.2 yd3
Payload . . . . . . . . . . . . . . . . . . . . . . . 25 metric tons 27.6 U.S. tons
Material . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 kg/mm2 227,500 psi
high tensile strength steel
Structure. . . . . . . . . . . . . . . . . . . . . . . V-shape body with flat-bottom
Material thickness:
Bottom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 mm 0.98"
Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 mm 0.63"
Sides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 mm 0.55"
Target area
(inside length x width) . . . . . . . 4570 mm x 2995 mm 15'0" x 9'10"
Dumping angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49°
Height at full dump . . . . . . . . . . . . . . . . . . . . . . . . . . 7075 mm 23'3"
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exhaust heating
HYDRAULIC SYSTEM
Hoist cylinder. . . . . . . . . . . . . . . . . . . Single, 3-stage telescopic type
Relief pressure . . . . . . . . . . . . . . . . 20.6 MPa 210 kg/cm2 2,990 psi
Hoist time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 sec
WEIGHT (APPROXIMATE)
Empty weight . . . . . . . . . . . . . . . . . . . . . . . . . . . 22450 kg 49,490 lb
Max. gross vehicle weight:
Standard tire . . . . . . . . . . . . . . . . . . . . . . . . 47525 kg 104,770 lb
Optional tire . . . . . . . . . . . . . . . . . . . . . . . . . 48035 kg 105,900 lb
Not to exceed max. gross vehicle weight, including options, fuel
and payload.
Weight distribution:
Empty: Front axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48%
Rear axles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52%
Loaded: Front axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32%
Rear axles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68%
TIRES
Standard tire. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.00-25-28PR(E3)
2225 mm 7'4"
2995 mm 9'10"
3200 mm 10'6"
.0 0
280 mm
11"
2700 mm 8'10"
3200 mm 10'6"
495 mm
1'7"
- 2 5 -2 8
1650 mm
5'5"
7075 mm 23'3"
515 mm
1'8"
.0
0
P
49
- 2 5 -2 8 P
3600 mm 11'10"
7390 mm 24'3"
2140 mm 7'0"
STANDARD EQUIPMENT FOR BASE MACHINE
ENGINE:
● Alternator 50A/24V
● Batteries 2 x 12V 150AH
● Komatsu SAA6D125E-3
● Starting motor, 7.5kW
● Engine auto preheater
CAB:
● Floor mat
● Foot rest
● Reclining suspension seat
● Retractable operator seat belt,
50mm 2" wide
● ROPS cab
● Sun-visor
● Tiltable and telescopic steering
wheel
● Tinted glass
● Windshield washer and wiper
GUARD AND COVERS:
● Engine under guard
● Exhaust thermal-guard
● Fire protective covers
● Mudguards
● Transmission under-guard
SAFETY:
● Automatic supplementary
steering
● Back up alarm
●
●
●
●
●
●
●
Exhaust retarder
Handrails for platform
Horn, electric
Ladders, left and right
Rear view mirrors
Secondary brake
Under view mirror
LIGHTING SYSTEM:
● Back-up light
● Headlights
● Indicator, stop and tail lights
BODY:
● Body, 17.7m3 23.2 yd3 (Heaped
2:1 SAE), with exhaust heating
● Cab guard, left side
TIRES:
● 16.00-25-28PR
OTHER:
● Caliper disc brake (Front)
● Centralized greasing
● Fully automatic transmission with
all speeds electronic modulation
● Hydropneumatic suspension
(Front and Rear)
● Lock ejector
● Oil-cooled multiple disc brake
(Rear)
OPTIONAL EQUIPMENT
CAB:
● Air conditioner
● Cigarette lighter and ashtray
● Intermittent windshield wiper
● Passenger seat (Fabric)
● Radio, AM / AM&FM
● Seatbelt (Two point anchor /
78mm 3.1")
SERVICE REFILL CAPACITIES
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374 ltr. 98.8 U.S. Gal
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ltr. 10.0 U.S. Gal
Torque converter, transmission and
retarder cooling . . . . . . . . . . . . . . . . . . . . . . . 70 ltr. 18.5 U.S. Gal
Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 ltr. 4.8 U.S. Gal
Final drives (total) . . . . . . . . . . . . . . . . . . . . . . . . 14 ltr. 3.7 U.S. Gal
Hydraulic system . . . . . . . . . . . . . . . . . . . . . . . . 80 ltr. 21.1 U.S. Gal
Suspension (total) . . . . . . . . . . . . . . . . . . . . . . . . 30 ltr. 7.9 U.S. Gal
61
9'8"
BODY
6770 mm 22'3"
4570 mm
15'0"
16
Torque converter . . . . . . . . . . . . . . . . . 3-elements, 1-stage, 2-phase
Transmission. . . . . . . . . . . . . . . . . . . . Full-automatic, planetary type
Speed range . . . . . . . . . . . . . . . . . . 6 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 gears
Maximum travel speed . . . . . . . . . . . . . . . . . . 47.0 km/h 29.2 mph
70
00
23 mm
'0"
16
TRANSMISSION
Brakes meet ISO 3450 and SAE J1473 standards.
Service brakes:
Front. . . . . . . . . . . . . . . . . . . . Air-over-hydraulic, caliper disc type
Rear . . . . . . . . . . . Air-over-hydraulic, oil-cooled multiple-disc type
Parking brake . . . . . . . . . . . . Spring applied, internal-expanding brake
Retarder . . . . . . . . . . . . . . . . . . . . . . . . . Air-over-hydraulic, oil-cooled,
multiple-disc rear brakes act as retarder.
Plus exhaust retarder.
Secondary brake . . . . A relay valve automatically actuates the service
brakes when air pressure drops below
the rated level. Manual operation is also possible.
525 mm
1'9" 2940 mm
EPA Tier 2 and EU Stage 2 emissions certified.
BRAKES
R
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D125E-3
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water-cooled, 4-cycle
Aspiration. . . . . . . . . . . . . . Turbo-charged and air-to-air after-cooled
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 mm 4.92"
Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mm 5.91"
Piston displacement. . . . . . . . . . . . . . . . . . . . . . . . . 11.04 ltr 674 in3
Horsepower
ISO 9249 / SAE J1349. . . . . . . . . . . . . . . . Gross 241 kW 323 HP
Net 235 kW 316 HP
Rated rpm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2100 rpm
Maximum torque . . . . . 1375 N•m 140 kg•m 1,013 lb•ft at 1,400 rpm
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
DIMENSIONS
R
ENGINE
HD255-5
OFF-HIGHWAY TRUCK
3590 mm 11'9"
3375 mm 11'1"
HD255-5
BODY:
● Without body heating
(with muffler)
● Body liner
GUARD AND COVERS:
● Body spill guard (150 / 250 mm
5.9" / 9.8")
● Engine side cover
● Platform guard (Right hand side)
● Radiator shutter (Canvas type)
● Vandalism protection
TIRES:
● 16.00 R25 Radial tire
LIGHTING SYSTEM:
● Fog lamp
● Hazard lamp
● Side work lamps
● Yellow beacon
MAINTENANCE:
● Air dryer, desiccant type
● Auto greasing system
● Jack, 30ton 33 U.S. tons
● Large capacity batteries (Wet type)
SAFETY:
● Dump caution buzzer
● Fire extinguisher
● Front brake ratio valve
● PM-clinic
GAUGE
( MEASUREMENT EQUIPMENT):
● Revo-tacho-graph
● Tacho-graph
OTHER:
● ARSC (Auto retard speed control)
● Poor fuel arrangement
● Tire chains
Standard equipment may vary for each country, and this specification sheet may contain attachments and optional equipment
that are not available in your area. Please consult your Komatsu distributor for detailed information.
7
kN
ton
USton
TRAVEL PERFORMANCE
500
50
400
40
GROSS WEIGHT
25
35
45
55
40
50
65
US ton
50
20
40
30
20
300
30
200
20
100
90
80
70
10
9
8
7
60
6
50
5
40
4
30
3
20
2
EMPTY
60
ton
LOADED
45.0
40.0
35.0
30.0
TOTAL RESISTANCE (GRADE+ROLLING) (%)
To determine travel performance: Read from
gross weight down to the percent of total
resistance. From this weight-resistance point,
read horizontally to the curve with the
highest obtainable speed range, then down
to maximum speed. Usable rimpull depends
upon traction available and weight on drive
wheels.
30
RIMPULL
25.0
10
9
8
7
6
20.0
15.0
14.0
13.0
12.0
11.0
10.0
9.0
8.0
7.0
6.0
5
4
3
5.0
4.0
2
3.0
10
1
1
0.9
0.8
0.7
2.0
0.6
10
20
30
10
15
40
20
50
25
60
30
35
km/ h
70
40
MPH
TRAVEL SPEED
BRAKE PERFORMANCE
Grade distance: Continuous Descent
FVHM0522
Grade distance: 450 m (1480 ft)
GROSS WEIGHT
0
0
10
20
10
20
30
30
40
40
50
50
EMPTY
60
60
70
70
80
GROSS WEIGHT
80
90
90
100
ton
0
100
110 US ton
0
-25
-20
F1
-15
F2
F3
-10
F4
F5
-5
F6
10
0
20
20
10
20
30
10
40
50
20
30
30
60
30
70
40
80
90
50
100
60
20
10
20
30
30
40
40
50
50
EMPTY
60
60
70
70
80
80
90
90
100
ton
0
100
110 US ton
0
-25
-20
F2
-15
F3
F4
-10
F5
F6
-5
10
20
10
10
20
30
20
40
50
30
60
70
40
TRAVEL SPEED
www.Komatsu.com
CEN00015-02
30
30
40
40
80
50
90
100
60
50
50
EMPTY
F1
0
20
LOADED
-30
0
10
60
60
70
70
80
-15
F3
F4
F5
0
MPH
0
10
20
30
10
90
0
100
110 US ton
0
-15
F4
-10
F6
-5
20
30
20
40
50
30
60
70
40
TRAVEL SPEED
50
60
30
10
20
10
20
30
30
40
40
70
40
80
50
90
100
60
50
50
EMPTY
F3
10
40
20
80
90
50
100
60
km/h
MPH
Grade distance: 1500 m (4920 ft)
ton
F2
10
-10
F6
-5
100
-20
0
100
110 US ton
-20
90
-25
0
ton
90
100
GROSS WEIGHT
80
F1
MPH
90
TRAVEL SPEED
-30
km/h
80
F2
LOADED
F5
80
-25
TOTAL RESISTANCE (GRADE+ROLLING) (%)
0
10
70
70
F1
GROSS WEIGHT
TOTAL RESISTANCE (GRADE+ROLLING) (%)
0
60
60
-30
km/h
Grade distance: 900 m (2950 ft)
GROSS WEIGHT
50
50
LOADED
TRAVEL SPEED
Grade distance: 600 m (1970 ft)
40
40
EMPTY
-30
0
10
LOADED
TOTAL RESISTANCE (GRADE+ROLLING) (%)
To determine brake performance: These
curves are provided to establish the
maximum speed and gearshift position
for safer descents on roads with a given
distance. Read from gross weight down
to the percent of total resistance. From
this weight-resistance point, read
horizontally to the curve with the highest
obtainable speed range, then down to
maximum descent speed the brakes can
safely handle without exceeding cooling
capacity.
TOTAL RESISTANCE (GRADE+ROLLING) (%)
0
0
60
60
70
70
80
80
90
100
110 US ton
LOADED
-30
-25
F1
-20
F2
-15
F3
-10
F4
F5
km/h
0
MPH
0
10
20
10
ton
90
100
30
20
F6
40
-5
50
30
60
70
40
80
50
90
100
60
TOTAL RESISTANCE (GRADE+ROLLING) (%)
0.5
km/h
MPH
TRAVEL SPEED
Printed in Japan 201308 IP.As
Materials and specifications are subject to change without notice.
is a trademark of Komatsu Ltd. Japan.