Komatsu D155AX Medium Dozer
Information
Additional information
| Make | |
|---|---|
| Model | D155AX, D155AX-8 |
| Weight | 41 t |
Equipment Overview
The Komatsu D155AX is a medium dozer built for heavy dozing and ripping, part of Komatsu’s D65/85/155 dozer family for the Australian and New Zealand market. It has 264 kW (354 hp) of net power, an operating weight of 41,100 kg with the SIGMADOZER blade and single-shank Giant Ripper fitted, and a 9.4 m³ blade capacity, suited to civil construction, quarrying, and mine site earthmoving where high production and undercarriage durability matter.
Power comes from the Komatsu SAA6D140E-7 engine, a 6-cylinder, 15.24-litre unit that is EPA Tier 4 Final emissions certified, using a combined diesel particulate filter and selective catalytic reduction aftertreatment system. An automatic TORQFLOW transmission pairs a lock-up torque converter with a planetary gear, multiple-disc-clutch gearbox, while a hydrostatic steering system transmits power to both tracks without interruption for smooth, powerful turns and a 2.14 m counter-rotation turning radius. A variable multi-shank or single-shank giant ripper is available for scarifying hard or compacted ground.
Technical Specifications
| Specification | Value |
|---|---|
| Engine | Komatsu SAA6D140E-7, 15.24 L, 6-cylinder, turbocharged, air-to-air aftercooled |
| Power Output | 264 kW / 354 hp (net, ISO 9249 @ 1,900 rpm); 268 kW / 360 hp gross (SAE J1995) |
| Emission Standard | EPA Tier 4 Final |
| Transmission | Automatic TORQFLOW (lock-up torque converter with planetary gear, multiple-disc clutch) |
| Drive Type | Hydrostatic Steering System (HST), PCCS-lever control, counter-rotation |
| Operating Weight | 41,100 kg (with SIGMADOZER blade and single-shank Giant Ripper) |
| Max Travel Speed | 11.6 km/h forward / 14.0 km/h reverse (3rd gear) |
| Blade Capacity | 9.4 m³ (SIGMADOZER, standard) |
| Blade Width | 4,060 mm (SIGMADOZER, standard) |
| Ground Pressure | 100 kPa (1.03 kg/cm²) |
| ROPS / FOPS | ISO 3471 / ISO 3449 |
Dimensions
| Dimension | Value |
|---|---|
| Overall Length (with blade) | 6,320 mm |
| Width (over blade, SIGMADOZER — the widest point) | 4,060 mm |
| Height | 3,385 mm |
| Track Gauge | approx. 2,140 mm |
| Ground Clearance | 500 mm |
| Minimum Turning Radius | 2.14 m (counter-rotation, pivot turn) |
Typical Applications
- Mine site production dozing and overburden ripping
- Quarry and aggregate face and stockpile work
- Large-scale civil earthmoving
- Fine grading with intelligent Machine Control (iMC) variant
- Land clearing and heavy ripping in compacted or rocky ground