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Komatsu Dozer D85EX-15
Hydrostatic steering makes the D85EX-15 very maneuverable for such a large, powerful dozer. Palm command controls for travel and equipment give the operator the precise control of a small dozer with the pushing power of a high production dozer.
4-cycle, water-cooled, direct injection
Turbocharged, air-to-air aftercooled, cooled EGR
Number of cylinders
Bore x stroke
4.92" x 5.9"
125 mm x 150 mm
SAE J1995 / Gross
ISO 9249 / SAE J1349* / Net
Hydraulic fan at maximum speed / Net
Fan drive type
Gear pump, force lubrication
EPA Tier 3 and EU stage 3A emissions certified.
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.
3.8 mph 6.1 km/h
5.0 mph 8.0 km/h
6.3 mph 10.1 km/h
8.1 mph 13.0 km/h
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.
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 radius
Oscillating equalizer bar and pivot shaft
Track roller frame
Monocoque, large section, durable construction
Rollers and idlers
Lubricated track rollers
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)
Type of shoes (standard)
Number of shoes (each side)
Shoe width (standard)
Ground contact area
Ground pressure(with dozer, cab and ROPS)
0.75 kg/cm² / 73.6 kPa
Length of track on ground
Coolant and Lubricant Capacity (refill)
129 U.S. gal
15.3 U.S. gal
10.0 U.S. gal
Torque converter, transmission, bevel gear, and steering system
15.9 U.S. gal
Final drive (each side)
6.9 U.S. gal
Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment.
Including Semi-U tilt dozer or straight tilt dozer, multi-shank ripper, steel cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.
Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.
Hydraulic control units:
2 x axial piston motors
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 setting
22.6 MPa230 kg/cm²
Spool control valves for tilt dozer:
Raise, hold, lower, and float
Right, hold, and left
Additional control valve required for multi-shank ripper: