Komatsu D155AX-7 Crawler Dozer Specs

Category: Crawler Dozers ➔
Manufacturer: Komatsu ➔
Model: D155AX-7 ➔

Komatsu D155AX-7 is a crawler dozer designed for heavy earthmoving, grading, and site preparation in mining, quarry, and large construction applications. It is part of Komatsu's D155AX series and uses a tracked undercarriage for traction and stability on soft, uneven, or steep ground. The machine is commonly configured with a semi-universal or straight blade, depending on application requirements. The D155AX-7 is built for dozing, ripping, and bulk material handling in demanding conditions. It is used in land clearing, road building, and mass excavation where consistent pushing power and durable undercarriage performance are required.

Engine

Komatsu D155AX-7 Crawler Dozer Engine specifications
Displacement	15.30 cu in (250.72 cu cm)
Engine Model	SAA6D140E-6
Gross Power	360.00 hp (268.46 kw)
Make	Komatsu
Net Power	354.00 hp (263.98 kw)
Number of Cylinders	6
Power Measured @	1900 rpm

Hydraulic System

Komatsu D155AX-7 Crawler Dozer Hydraulic System specifications
Pump Flow Capacity	47.60 gpm (180.17 lpm)
Pump type	Piston
Relief Valve Pressure	3980 psi

Operating Specifications

Komatsu D155AX-7 Crawler Dozer Operating Specifications specifications
Cooling System Fluid Capacity	27.30 gal (103.33 l)
Engine Oil Capacity	9.80 gal (37.09 l)
Final Drives Fluid Capacity	8.20 gal (31.04 l)
Fuel Capacity	165.00 gal (624.53 l)
Hydraulic Fluid Capacity	24.20 gal (91.60 l)
Operating Weight	87,100.00 lbs (39,507.94 kg)

Transmission

Komatsu D155AX-7 Crawler Dozer Transmission specifications
Max Speed - Forward	7.20 mph (11.59 kph)
Max Speed - Reverse	8.70 mph (14.00 kph)
Number of Forward Gears	3
Number of Reverse Gears	3
Transmission Type	TORQFLOW

Undercarriage

Komatsu D155AX-7 Crawler Dozer Undercarriage specifications
Ground Contact Area	6.20 cu in (101.60 cu cm)
Ground Pressure	11.9 psi
Number of Carrier Rollers per Side	2
Number of Shoes per Side	42
Number of Track Rollers per Side	7
Standard Shoe Size	28.00 in (71.12 cm)

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