Komatsu D375A-6 Bulldozer

Komatsu D375A-6 Bulldozer

Rated rpm 1800 rpm
Operating Weight 157,940 lb 71640 kg
Send Inquiry

Palm Command Electronic Controlled Travel Control Joystick

Ergonomically designed palm command travel joystick provides the operator with a relaxed posture and superb control improving operator comfort. Transmission gear shifting is simply carried out with thumb push buttons.

pt_D375A-6_E1L0227  

Palm Command PPC Controlled Blade Control Joystick

The blade control joystick uses the Proportional Pressure Control (PPC) valve and joystick, similar to the travel control joystick. PPC control combined with the highly reliable Komatsu hydraulic system enables superb control. Dual tilt and pitch operation are enabled by pressing a switch with the thumb.

pt_D375A-6_E1L0249  

Fully Adjustable Air Suspension Seat and Travel Control Console

For improved rear visibility during the return portion of the cycle, the operator can adjust the seat 15° to the right. The transmission and steering controls move with the seat for optimum operator comfort. The travel control console is adjustable fore, aft, and for height. The armrest is independently adjustable up and down, providing optimum operation posture for all operators. The operator seat is also tiltable for facilitating downhill dozing.


Electronic Controlled Modulation Valve (ECMV) 

Transmission

The controller automatically adjusts each clutch engagement depending on travel conditions such as gear speed, RPM and shifting pattern. This provides shockless and smooth clutch engagement, improved component reliability, extended component life, and operator ride comfort.


Steering Clutches/Brakes

Sensors monitor machine operating conditions and electronically control the steering clutches and brakes. Monitoring application parameters such as incline angle of slope and degree of load provides smooth and easy operation by reducing counter-steering on downhill travel, etc.


Effect of ECMV Steering Clutches/Brake Control

When dozing downhill, ECMV automatically controls steering clutches and brakes depending on incline of machine or degree of load, reducing counter-steering and producing smooth dozing operation.

When dozing and turning, ECMV automatically controls stroke ratio of steering clutches and brakes depending on degree of load, enabling smooth dozing and turning.

D375A-6  

Automatic Torque Converter Lockup System

For greater efficiency during long pushes, the lockup mode allows the system to automatically engage the torque converter lockup clutch. Locking up the torque converter transmits all the engine power directly to the transmission, increasing ground speed and thus achieving efficiencies equal to a direct drive. The results of this efficient use of engine power are less fuel consumption and faster cycle times.

D375A-6  

K-Bogie Undercarriage System

K-Bogies with front and rear single bogies are utilized to increase the length of track on ground improving machine stability and leveling performance. An oscillating idler and increased sprocket lead angle improve riding comfort when traveling over rough terrain. K-Bogies oscillate with two fulcrums assuring a 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 links. 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.

D375A-6  

Working Mode

This mode can be set to either “P mode” for maximum production (power) or “E mode” for energy saving operation (economy). 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.)


Track Shoe Slip Control Mode

Eliminates the need for the operator to constantly control engine power output with the decelerator pedal while ripping substantially reducing operator fatigue. 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 extended 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.


Track Link With Wedge Ring

New D375A-6 track links feature reduced press-fit force and a wedge ring. Conventional track pins are retained only with a large press-fit force. (The new track link divides pin forces between the wedge ring and press-fit force.) This enables easier service with reduced pin damage when turning pins and bushings. The result is improved undercarriage life and reduced maintenance cost through reduced wear, greater pin reusability, and reduced maintenance man-hours.

0745T-shoe  

Engine

Model
Komatsu SAA6D170E-5*
Type
4-cycle, water-cooled, direct injection
Aspiration
Turbocharged, air-to-air aftercooled, cooled EGR
Number of cylinders
6
Bore x stroke6.69" x 6.69"170 mm x 170 mm
Piston displacement1,413 in³23.15 ltr
Governor
All-speed and mid-range, electronic
Horsepower:

SAE J1995 - Gross636 HP474 kW
ISO 9249 / SAE J1349 - Net610 HP455 kW
Hydraulic fan at maximum speed - Net580 HP433 kW
Rated rpm
1800 rpm
Fan drive type
Hydraulic
Lubrication system:

Method
Gear pump, force lubrication
Filter
Full-flow

TORQFLOW Transmission

Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase torque converter with lockup clutch and a planetary gear, multiple-disc clutch transmission which is hydraulically actuated and force-lubricated for optimum heat dissipation. Gearshift lock lever and neutral safety switch help prevent accidental starts.

GearForwardReverse
1st2.2 mph
3.5 km/h
2.9 mph
4.6 km/h
2nd4.2 mph
6.8 km/h
5.5 mph
8.9 km/h
3rd L5.0 mph
8.0 km/h
6.0 mph
9.7 km/h
3rd7.3 mph
11.8 km/h
9.8 mph
15.8 km/h

Final Drive

Double-reduction final drive of spur and planetary gear sets to increase tractive effort and reduce gear tooth stresses for long final drive life. Segmented sprocket teeth are bolt-on for easy replacement.

Steering System

PCCS, joystick controlled, wet multiple-disc steering clutches are spring-loaded and hydraulically released.Wet multiple-disc, pedal/lever controlled steering brakes are spring-actuated hydraulically released and require no adjustment. Steering clutches and brakes are interconnected for easy, responsive steering.


Minimum turning radius13'9"4.2 m

Undercarriage

Suspension
Oscillating equalizer bar and pivot shaft
Track roller frame
Cylindrical, high-tensile-strength steel construction
Rollers and idlers
Lubricated track rollers
K-Bogie undercarriage
Lubricated track rollers are resiliently mounted to the track frame with a bogie suspension system whose oscillating motion is cushioned by rubber pads.
Extreme service track shoes
Lubricated tracks. Unique seals prevent entry of foreign abrasives into pin to bushing clearances to provide extended service life. Track tension is easily adjusted with grease gun.
Number of shoes (each side)
41
Grouser height:

Single grouser3.7"93 mm
Shoe width (standard)24"610 mm
Ground contact area7,527 in²48560 cm²
Ground pressure (tractor)15.6 psi108 kPa / 1.10 kg/cm²
Number of track rollers
8
Number of carrier rollers
2
Extreme service shoes:Ground contact area:Ground** pressure:
24'' / 610 mm
Additional weight - 0 lb / 0 kg
7,527 in²
48560 cm²
21.0 psi
1.48 kgf/cm² / 145 kPa
28'' / 710 mm
Additional weight - 1,500 lb / 680 kg
8,760 in²
56520 cm²
18.2 psi
1.28 kgf/cm² / 126 kPa
32'' / 810 mm
Additional weight - 3,000 lb / 1360 kg
9,990 in²
64480 cm²
16.0 psi
1.13 kgf/cm² / 111 kPa
** Ground pressure based on tractor, Semi-U tilt dozer, giant ripper, cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.

Coolant and Lubricant Capacity (refill)

Fuel tank317.0 U.S. gal1200 ltr
Coolant31.7 U.S. gal120 ltr
Engine22.7 U.S. gal86 ltr
Torque converter, transmission, bevel gear, and steering system39.6 U.S. gal150 ltr
Final drive (each side)17.1 U.S. gal65 ltr

Operating Weight

Tractor weight
Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment.
117,290 lb53200 kg
Including Semi-U tilt dozer, giant ripper, cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.157,940 lb71640 kg
Ground pressure21.0 psi1.48 kg/cm² / 145 kPa

Hydraulic System

Hydraulic control unit:

Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.

Hydraulic control unit::

All spool control valves externally mounted beside the hydraulic tank. Variable piston pump with capacity (discharge flow) of 366 ltr/min / 96.7 U.S. gal/min for implement at rated engine rpm.

Relief valve setting . . . for implement3,980 psi27.5 MPa
280 kg/cm²
Control valves:

Spool control valves for Semi-U tilt dozer and Full-U tilt dozer.

• Blade lift
Raise, hold, lower, and float
• Blade tilt
Right, hold, and left
Additional control valve required for variable digging angle multi-shank ripper and giant ripper.

• Ripper lift
Raise, hold, and lower
• Ripper tilt
Increase, hold, and decrease
Hydraulic cylinders:
Double-acting, piston
Number of cylinders:Bore:
• Blade lift25.5" / 140 mm
• Blade tilt17.1" / 180 mm
• Ripper lift27.9" / 200 mm
• Ripper tilt27.1" / 180 mm
Hydraulic oil capacity (refill):

Semi-U dozer or U dozer34.4 U.S. gal130 ltr
Ripper equipment (additional volume):

Giant ripper (variable)11.9 U.S. gal45 ltr
Multi-shank ripper (variable)11.9 U.S. gal45 ltr

Send Inquiry

*Subject:
*Purchase Time:
*Content:
*Country/Region:
*Full Name:
*Current Email:
WebSite:
*Company Name:
*Phone Number: - -
 

Construction Machinery Online

Language Options

E-Mail: alina@global-ce.com TEL: 0086-10-84673349,18701576687
lmjx.net Site: International - China - U.S.A - Russia - France - Spain - Portugal - India - Germany - Saudi Arabia - Indonesia

Copyright Notice 2002-2024 global-ce.com Construction Machinery Online. All rights reserved.

Address: Room 901, Building C, Ruipu Mansion, Hongjunying South Road No.15, Chaoyang District, Beijing.100107 P.R.China