- Category: Crawler Dozers ➔
- Manufacturer: Komatsu ➔
- Model: D155AX-7 ➔
The Komatsu D155AX-7 is a crawler dozer designed for heavy earthmoving, grading, and site preparation applications. It is part of Komatsu's D155 series and is commonly used in mining, construction, road building, and large-scale land development. The machine features a tracked undercarriage for traction and stability on uneven terrain, along with a blade for pushing and leveling material. The D155AX-7 is typically equipped with a Komatsu diesel engine, hydrostatic or power shift drivetrain depending on configuration, and operator controls designed for productivity and control. It is used in demanding environments where durability, drawbar power, and consistent performance are required.
Engine
| Displacement | 15.30 cu in (250.72 cu cm)
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| Engine Model | SAA6D140E-6
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| Gross Power | 360.00 hp (268.46 kw)
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| Make | Komatsu
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| Net Power | 354.00 hp (263.98 kw)
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| Number of Cylinders | 6
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| Power Measured @ | 1900 rpm
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Hydraulic System
| Pump Flow Capacity | 47.60 gpm (180.17 lpm)
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| Pump type | Piston
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| Relief Valve Pressure | 3980 psi
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Operating Specifications
| Cooling System Fluid Capacity | 27.30 gal (103.33 l)
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| Engine Oil Capacity | 9.80 gal (37.09 l)
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| Final Drives Fluid Capacity | 8.20 gal (31.04 l)
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| Fuel Capacity | 165.00 gal (624.53 l)
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| Hydraulic Fluid Capacity | 24.20 gal (91.60 l)
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| Operating Weight | 87,100.00 lbs (39,507.94 kg)
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Transmission
| Max Speed - Forward | 7.20 mph (11.59 kph)
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| Max Speed - Reverse | 8.70 mph (14.00 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 | 6.20 cu in (101.60 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 | 28.00 in (71.12 cm)
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