Komatsu D475A-8
Komatsu’s largest dozer, designed for twice the life
The Komatsu D475A-8 is a 115-tonne mining dozer with 664 kW (890 hp) forward and 722 kW (968 hp) reverse, and Semi-U, U and Super dozer blades from 27.2 to 45 m³. Komatsu re-engineered it in 2021 for longer component life. Specs and context.
Photo: Komatsu (komatsu.com)
On this page (10 sections) ↓
+Strengths
- Komatsu’s largest and most productive dozer
- Re-engineered for longer component life (2021)
- Higher reverse power for faster cycles
- Super dozer blade for maximum volume
−Watch-outs
- Mining-scale costs and logistics
The Komatsu D475A-8 in 30 seconds
- What it is: Komatsu's largest dozer, about 115 tonnes.
- Power: 664 kW (890 hp) forward; 722 kW (968 hp) reverse.
- Blades: Semi-U 27.2 m³, U 34.4 m³, Super dozer 45.0 m³.
Overview
In 2021 Komatsu re-engineered the D475A-8; EquipmentWorld headlined it as "designed for twice the life". The machine is Komatsu's answer to the Cat D11 in large open-pit mines. Like other large dozers, it delivers more power in reverse than forward to speed up the return trip.
The Komatsu dozer range at a glance
Komatsu uses hydrostatic transmissions on its small and mid-size dozers and its TORQFLOW torque-converter powershift on larger machines. Many current models use the PLUS (Parallel Link Undercarriage System) with rotating bushings, which Komatsu says lasts up to twice as long as a conventional undercarriage. Figures from Komatsu's published specifications:
| Model | Net power | Operating weight | Blade capacity | Drive |
|---|---|---|---|---|
| Komatsu D39EX-24 | 78 kW (105 hp) | 9.9 t | 2.21 m³ | Hydrostatic |
| Komatsu D51EX-24 | 98 kW (131 hp) | 13.7 t | 2.7 m³ | Hydrostatic |
| Komatsu D61EXi-24 | 125 kW (168 hp) | 18.6 t | 3.37 m³ | Hydrostatic + iMC |
| Komatsu D65EX-18 | 162 kW (217 hp) | 20.7–22.1 t | 5.6 m³ | TORQFLOW |
| Komatsu D155AX-8 | 264 kW (354 hp) | 40.5 t | 9.4–11.9 m³ | TORQFLOW |
| Komatsu D375A-8 | 455 kW (610 hp) | 72.9–74.1 t | 18.5–22.0 m³ | TORQFLOW |
| Komatsu D475A-8 | 664 kW (890 hp) fwd | 115.3 t | 27.2–45.0 m³ | TORQFLOW |
Blades
| Blade | Capacity (ISO 9246) |
|---|---|
| Semi-U | 27.2 m³ (35.6 yd³) |
| U | 34.4 m³ (44.5 yd³) |
| Super dozer | 45.0 m³ (58.9 yd³) |
Applications
Open-pit coal and metal mines, overburden and reclamation, large stockpiles. See biggest construction and mining machines.
D475A-8 vs rivals
| Rival | Comparison |
|---|---|
| Cat D11 | 107 t, 850 hp fwd / 957 hp rev, carrydozer option |
| Komatsu D375A-8 | Smaller |
Verdict
Komatsu's flagship mining dozer, re-engineered for longer life in the toughest mines.
Komatsu D475A-8 specifications
Key figures
| Operating weight | 115,300 kg (254,195 lb) |
|---|---|
| Net power – forward | 664 kW (890 hp) at 2,000 rpm |
| Net power – reverse | 722 kW (968 hp) at 2,000 rpm |
Blades (ISO 9246)
| Semi-U | 27.2 m³ (35.6 yd³) |
|---|---|
| U | 34.4 m³ (44.5 yd³) |
| Super dozer | 45.0 m³ (58.9 yd³) |
Figures are typical for standard configurations as published by Komatsu. Values vary by market, emissions tier, attachments and options; confirm with your dealer before purchase, transport or lifting.
Komatsu D475A-8 vs rivals: specs side by side
Headline figures for standard configurations; “—” means the figure is not listed in our database.
| Specification | Komatsu D475A-8 | Caterpillar D11 | Komatsu D375A-8 | Liebherr PR 776 |
|---|---|---|---|---|
| Type | Bulldozer | Bulldozer | Bulldozer | Bulldozer |
| Operating weight | 115,300 kg (254,195 lb) | 106,824 kg (235,507 lb) | 72,900–74,090 kg (160,717–163,340 lb) | 71,800–73,189 kg (158,290–161,354 lb) |
| Net power – forward | 664 kW (890 hp) | 634 kW (850 hp) | — | — |
| Net power – reverse | 722 kW (968 hp) | 714 kW (957 hp) | — | — |
| Semi-U | 27.2 m³ (35.6 yd³) | 27.2 m³ (35.6 yd³) | — | — |
Komatsu D475A-8 videos
Walkarounds and demonstrations from the manufacturer and independent channels. Videos load from YouTube only when you press play.
Frequently asked questions
How much does a Komatsu D475A-8 weigh?
About 115,300 kg (254,195 lb).
How much horsepower does the D475A-8 have?
890 hp net forward and 968 hp net reverse.
What is the D475A-8 blade capacity?
Semi-U 27.2 m³, U 34.4 m³ and Super dozer 45.0 m³.
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