Komatsu HD785 Rigid Dump Truck
Information
Additional information
| Make | |
|---|---|
| Model | HD785, HD785-7 |
| Weight | 72 t |
| Capacity | 92 t |
Equipment Overview
The Komatsu HD785 is a rigid dump truck built for large-scale mining and quarrying, known across the industry for the highest brake retardation in its class. It carries a 91.7-tonne rated payload and a 60 m³ heaped body, delivering 895 kW of gross power, suited to coal, iron ore, and hard-rock mining operations where four-wheel retarding matters on long, steep haul roads.
Power comes from a Komatsu SAA12V140E-3 12-cylinder diesel engine producing 895 kW (1,200 hp) gross and 879 kW (1,178 hp) net at 1,900 rpm, with 5,080 N·m of maximum torque. The engine is U.S. EPA Tier 2 emission certified, with selectable Power and Economy output modes for different haul conditions. A seven-speed K-ATOMiCS automatic transmission drives the rear axle, and four-wheel oil-cooled multiple-disc brakes double as a continuous retarder rated at 1,092 kW, giving stable, predictable control on long, steep descents.
Technical Specifications
| Specification | Value |
|---|---|
| Engine | Komatsu SAA12V140E-3, 12-cylinder diesel |
| Power Output (Gross) | 895 kW (1,200 hp) at 1,900 rpm |
| Max Torque | 5,080 N·m (518 kgf·m) |
| Emission Standard | U.S. EPA Tier 2 |
| Transmission | 7-speed automatic (K-ATOMiCS) |
| Drive Type | Rear-wheel drive |
| Operating Weight | 72,000 kg (empty vehicle weight) |
| Payload Capacity | 91,700 kg (Rated) |
| Body Volume (Heaped) | 60 m³ (General purpose body, SAE 2:1) |
Dimensions
| Dimension | Value |
|---|---|
| Length | 11,015 mm |
| Width | 5,530 mm |
| Height | 5,050 mm |
| Wheelbase | 4,950 mm |
| Turning Radius | 10.1 m |
Typical Applications
- Large-scale open-pit coal, iron ore, and hard-rock mining haul roads
- Quarry and aggregate extraction and hauling
- Overburden removal in surface mining operations
- Long, steep haul routes where retarder capacity is critical
