- Category: Crawler Dozers ➔
- Manufacturer: Komatsu ➔
- Model: D155AX-7 ➔
Komatsu D155AX-7 is a crawler dozer designed for heavy earthmoving, mining support, site preparation, and large-scale grading applications. It is part of Komatsu's D155 series and uses a tracked undercarriage for traction and stability on soft, uneven, or steep terrain. The machine is commonly configured with a semi-universal or straight blade for dozing, spreading, and push-loading material. The D155AX-7 is used in construction, quarry, forestry, and land clearing operations where high drawbar pull and durable undercarriage performance are required. It is recognized for its large frame, hydraulic blade control, and suitability for demanding production environments.
Engine
| Displacement | 15 cu in (251 cu cm)
|
| Engine Model | SAA6D140E-6
|
| Gross Power | 360 hp (268 kw)
|
| Make | Komatsu
|
| Net Power | 354 hp (264 kw)
|
| Number of Cylinders | 6
|
| Power Measured @ | 1900 rpm
|
Hydraulic System
| Pump Flow Capacity | 48 gpm (180 lpm)
|
| Pump type | Piston
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| Relief Valve Pressure | 3980 psi
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Operating Specifications
| Cooling System Fluid Capacity | 27 gal (103 l)
|
| Engine Oil Capacity | 10 gal (37 l)
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| Final Drives Fluid Capacity | 8 gal (31 l)
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| Fuel Capacity | 165 gal (625 l)
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| Hydraulic Fluid Capacity | 24 gal (92 l)
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| Operating Weight | 87,100 lbs (39,508 kg)
|
Transmission
| Max Speed - Forward | 7 mph (12 kph)
|
| Max Speed - Reverse | 9 mph (14 kph)
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| Number of Forward Gears | 3
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| Number of Reverse Gears | 3
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| Transmission Type | TORQFLOW
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Undercarriage
| Ground Contact Area | 6 cu in (102 cu cm)
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| Ground Pressure | 11.9 psi
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| Number of Carrier Rollers per Side | 2
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| Number of Shoes per Side | 42
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| Number of Track Rollers per Side | 7
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| Standard Shoe Size | 28 in (71 cm)
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