Rippers (optional)
●
The variable giant ripper features a long sprocket center-to-ripper point distance, making
ripping operation easy and effective while maintaining high penetration force.
●
The variable giant ripper is a parallelogram single shank ripper ideal for ripping tough
material. The ripping angle is variable, and the depth is adjustable in three stages by a
hydraulically controlled pin puller.
●
The multi-shank ripper is a hydraulically controlled parallelogram ripper with three shanks.
Large blade
Capacities of 18.5 m
3
24.2 yd
3
(Semi-U dozer) and 22.0 m
3
28.8 yd
3
(U dozer) yield outstanding production. High-
tensile-strength steel comprising the front and sides of the
blade increase durability. The shape of the blade features
high load hauling efficiency. The end bit with improved cutting
performance is standard equipment.
Dual tilt dozer (optional)
The dual tilt dozer increases productivity while reducing
operator effort.
●
Optimum blade cutting angle for all types of materials
and grades can be selected on-the-go for increased load
and production.
●
Digging, hauling, and dumping are easy and smooth with
less operator fatigue.
●
Dozer tilt angle and tilt speed are twice that of a
conventional single tilt system.
7
Torque
converter
Engine
Transmission
Lockup “ON”
Lockup “OFF”
Fulcrum of major bogie
Fulcrum of minor bogie
Engine
The Komatsu SAA6D170E-5 engine delivers 474 kW 636 HP
at 1800 rpm. The fuel-efficient Komatsu engine, together
with the heavy machine weight, make the D375A-6 a superior
crawler dozer in both ripping and dozing production. The
engine is EPA Tier 3 and EU stage 3A emissions certified,
and features direct fuel injection, turbocharger, air-to-air
aftercooler and cooled EGR system to maximize fuel
efficiency.
To minimize noise and vibration, the engine is mounted
to the main frame with rubber cushions.
Hydraulic drive radiator cooling fan
Fan rotation is automatically controlled depending on
coolant and hydraulic oil temperature, saving fuel
consumption and providing great productivity with a quiet
operating environment.
Automatic transmission with lockup torque
converter
A sharp reduction in fuel consumption and greater power
train efficiency is achieved by the new automatic gearshift
transmission and lockup torque converter. The automatic
gearshift transmission selects the optimal gear range
depending on the working conditions and load placed on
the machine. This means the machine is always operating
at maximum efficiency. (Manual gearshift mode is
selectable with a switch)
K-Bogie undercarriage system
New K-Bogie undercarriage system combines prior
advantages with new additional features.
Current features:
●
K-Bogies that oscillate with two fulcrums assure large
amount of track roller vertical travel. Impact load to
undercarriage components is minimized and durability of
components is improved since track rollers are always in
contact with track link.
●
Track rollers follow track link movement to extend the
undercarriage life.
●
Excellent riding comfort is provided due to less vibration
and shock when traveling over rough terrain.
Features on new K-Bogie undercarriage system:
●
New K-Bogies with front and rear single bogies are utilized
providing increased length of track on ground to improve
machine stability and leveling performance.
●
The oscillating idler and increased sprocket lead angle
improve riding comfort when travelling over rough terrain.
6
P
RODUCTIVITY
F
EATURES
D375A
-6
CRAWLER DOZER
D375A
-6
C
R A W L E R
D
O Z E R
Manual
gearshift
mode screen
Automatic
gearshift
mode screen
Gearshift mode
selector switch
Working mode
selector switch
Shoe slip control
mode screen
(optional)
Track shoe slip control mode (optional)
●
Eliminates the need for the operator to constantly control engine power output with the decelerator pedal while ripping.
Operator fatigue is substantially reduced.
●
Maneuverability is improved because the operator is free to focus on the ripping application without having to monitor the
track shoe slippage.
●
Repair costs are significantly lowered and undercarriage life is prolonged with the reduction in track shoe slippage.
●
The track shoe slip control system will contribute to lower fuel costs, because the engine output is automatically controlled
to optimum levels for operation.
Automatic/manual gearshift and shoe slip control (optional) selectable mode
Automatic or manual gearshift modes can be selected with ease to suit the work at hand by simply pressing the switch on the
multi-monitor (The mode can be selected when the travel control joystick is at NEUTRAL.).
●
Automatic gearshift mode
The mode for general dozing. When a load is applied, the gear automatically shifts down, and when the load is off, it
automatically shifts up to a set maximum gear speed. This mode economizes both fuel and production where the torque
converter lockup mechanism is actuated according to load, automatically selecting the optimum gear speed.
●
Manual gearshift mode
The mode for dozing and ripping rough ground. When loaded, the gear automatically shifts down, but does not shift up when
the load is off.
Working mode
This mode can be set to either “P mode” for the maximum power or “E mode” for energy saving operation. Combined with the
automatic gearshift mode or manual gearshift mode, the working mode allows the operator to select the optimum machine
operating condition for the work at hand. (The mode can be switched during operation.)
P mode
E mode
