Komatsu D85PX-15 Bulldozer

Komatsu D85PX-15 Bulldozer

Rated rpm 1900 rpm
Operating Weight 60,960 lb 27650 kg
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Full-adjustable Suspension Seat and Travel Control Console

The travel control console has adjustment fore and aft, and height.

For improved rear visibility during reverse operations, the operator can adjust seat 15° to the right.

D85 Seat 15 deg  

Hydrostatic Steering System—Smooth, Powerful Turning

The Hydrostatic Steering System (HSS) is powered by an independent hydraulic pump with engine power transmitted to both tracks without power interruption on the inside track. When the machine turns, the outside track moves faster and the inside slower, for smooth, powerful turns. Counter-rotation is available for minimum turning radius providing excellent maneuverability. Shock-free steering reduces machine vibration and minimizes operator fatigue.

D85 HSS Image Pg 5 copy  

Hydraulic Drive Radiator Cooling Fan

Fan speed is automatically controlled depending on coolant and hydraulic oil temperature. This saves fuel and provides great productivity with a quiet operating environment.

D85PX-15  

Comfortable Ride with New Cab Damper Mounting

D85’s cab mounts use a newly designed cab damper which provides excellent shock and vibration absorption capacity with its long stroke. Cab damper mounts soften shocks and vibration while traveling over adverse conditions, which conventional mounting systems are unable to absorb. The cab damper spring isolates the cab from the machine body, suppressing vibration and providing a quiet, comfortable operating environment.

D85PX-15  

Modular Power Train Design

Power train components are sealed in a modular design that allows the components to be dismounted and mounted without oil spillage.


D85PX-15  

Engine

Model
Komatsu SAA6D125E-5
Type
4-cycle, water-cooled, direct injection
Aspiration
Turbocharged, air-to-air aftercooled, cooled EGR
No. of cylinders
6
Bore x stroke4.92" x 5.9"125 mm x 150 mm
Piston displacement674 in³11.04 ltr
Governor
All-speed, electronic
Horsepower:

SAE J1995266 HP199 kW
ISO 9249 / SAE J1349*240HP179 kW
Hydraulic fan at maximum speed / Net240 HP179 kW
Rated rpm
1900 rpm
Fan drive type
Hydraulic
Lubrication system:

Method
Gear pump, force lubrication
Filter
Full-flow
EPA Tier 3 and EU stage 3A emissions certified.

TORQFLOW Transmission

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

Travel speed:Forward:Reverse:
1st2.1 mph
3.3 km/h
2.7 mph
4.4 km/h
2nd3.7 mph
6.0 km/h
4.9 mph
7.9 km/h
3rd6.2 mph
10.0 km/h
7.9 mph
12.7 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 rims are bolt-on for easy replacement.

Steering System

PCCS lever controls for all directional movements. Pushing the PCCS lever forward results in forward machine travel, while pulling it rearward reverses the machine. Simply tilt the PCCS lever to left to make a left turn.

Hydrostatic Steering System (HSS) is powered by steering planetary units and an independent hydraulic pump and motor. Counterrotation turns are also available. Wet, multiple-disc, pedal-controlled service brakes are spring-actuated and hydraulically released. Gear shift lock lever also applies parking brake.


Minimum turning radius7'4"2.24 m

Undercarriage

Suspension
Oscillating equalizer bar and pivot shaft
Track roller frame
Monocoque, large section, durable construction
Rollers and idlers
Lubricated track rollers
Track shoes
Lubricated tracks. Unique seals prevent entry of foreign abrasive material into pin to bushing clearances to provide extended service life. Track tension is easily adjusted with grease gun.
Number of track rollers (each side)
8
Type of shoes (standard)
Single grouser
Number of shoes (each side)
45
Grouser height2.8"72 mm
Shoe width (standard)36"910 mm
Ground contact area9,820 in²63340 cm²
Ground pressure
(with dozer, cab and ROPS)
6.3 psi0.44 kg/cm² / 43.1 kPa
Track gauge7'5"2250 mm
Length of track on ground11'5"3480 mm

Coolant and Lubricant Capacity (refill)

Fuel tank129 U.S. gal490 ltr
Coolant15.3 U.S. gal58 ltr
Engine10.0 U.S. gal38 ltr
Torque converter, transmission, bevel gear, and steering system15.9 U.S. gal60 ltr
Final drive (each side)6.9 U.S. gal26 ltr

Operating Weight

Tractor weight:

Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment.51,810 lb23500 kg
Operating weight:

Including straight tilt dozer, steel cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.60,960 lb27650 kg

Hydraulic System

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

Hydraulic control units:

All spool valves externally mounted beside the hydraulic tank. Plunger type hydraulic pump with capacity (discharge flow) of 195 ltr/min 51.5 U.S. gal/min at rated engine rpm.

Relief valve setting3,270 psi22.6 MPa
230 kg/cm²
Control valves:

Spool control valves for tilt dozer:

Blade lift
Raise, hold, lower, and float
Blade tilt
Right, hold, and left
Hydraulic cylinders
Double-acting, piston
Number of cylinders:BoreBore
Blade lift / 23.9"100 mm
Blade tilt / 15.9"150 mm
Ripper lift / 25.1"130 mm
Hydraulic oil capacity (refill):

Straight tilt dozer17.7 U.S. gal67 ltr
Semi-U tilt dozer17.7 U.S. gal67 ltr
Ripper equipment (additional volume):

Multi-shank ripper2.9 U.S. gal11 ltr

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