Choosing mining dump truck capacity should begin with the mine’s production target, not with the largest truck available. Payload affects fleet size, road geometry, loader matching, ventilation, and operating cost.
For buyers comparing different classes, the Mining Truck product range provides model options, but every capacity figure should be verified from the selected product page.
Capacity Is More Than a Ton Rating
A truck may be described as 5T, 10T, or another nominal class, but effective production depends on how much material is actually moved per cycle.
Four variables matter most:
- Rated payload
- Actual payload achieved
- Cycle time
- Machine availability
A truck that carries more per trip but takes much longer to complete a cycle may not improve hourly output.
Convert the Production Target Into Payload
A simple planning method is:
Trips per hour = 60 ÷ cycle time in minutes
Required payload per truck = target tonnes per hour ÷ (trips per hour × number of trucks × availability factor)
Then:
Example: if the target is 60 t/h, cycle time is 12 minutes, two trucks are planned, and practical availability is assumed at 85%, then:
- Trips per hour = 60 ÷ 12 = 5
- Required payload per truck ≈ 60 ÷ (5 × 2 × 0.85)
- Required working payload ≈ 7.1 tonnes
This is a planning example only. Final fleet sizing should use measured site data and the selected model’s rated limits.
Material Density Changes the Result
Hopper volume is not the same as payload.
Dense ore can reach the rated load before the hopper is filled completely, while lighter material may fill the body by volume first.
Buyers should provide:
- Typical and maximum bulk density
- Moisture condition
- Fragmentation or lump size
- Expected loading method
These values help determine whether the truck is weight-limited or volume-limited in the intended application.
Cycle Time Is the Second Half of Capacity
The full haul cycle normally includes:
- Queue and spotting
- Loading
- Loaded travel
- Dumping
- Empty return
Grades, corners, passing points, traffic, and road condition can make real cycle time very different from a brochure estimate.
For short routes, smaller trucks can sometimes deliver acceptable output through higher cycle frequency. On longer routes, higher payload may become more valuable if the tunnel can accommodate the machine.
Compare 5T and 10T Classes Correctly
Mineloaders currently publishes model-level data for both a 5T Mining Transport Vehicle and a 10T Mining Transport Vehicle.
Use those pages only for the named models. The 5T page lists 5,000 kg rated load and a 2.2 m³ hopper, while the 10T page should be checked separately for its own payload, hopper, dimensions, and configuration.
The important procurement lesson is not that one class is better. It is that capacity must be matched to route geometry and production demand.
Loader-to-Truck Matching
Truck capacity should also match the loader.
If a loader requires too many bucket passes to fill the truck, loading time can become the bottleneck. If the truck is too small, the loader may spend more time positioning and waiting.
When reviewing the full fleet, compare available Mining Loaders with the selected truck capacity and estimate how many passes are needed under realistic bucket fill.
Larger Capacity Is Not Always Better
A larger truck can reduce the number of trips, but it may also require:
- Wider headings
- More turning space
- Larger loading areas
- Higher braking capacity
- More ventilation or energy
- Different maintenance facilities
Sandvik’s Toro TH545i illustrates how high-capacity underground trucks are documented with payload, box range, dimensions, and operating weight together. Capacity should always be read with these other parameters.
Capacity Selection Checklist
Before choosing a nominal capacity:
- Set the required tonnes per hour.
- Measure realistic cycle time.
- Confirm material density.
- Decide expected fleet size.
- Match loader bucket size to truck payload.
- Check tunnel dimensions and turning.
- Review grade and braking requirements.
- Verify model-rated payload from the datasheet.
- Run at least one conservative production scenario.
Conclusion
The right mining dump truck capacity is the payload that meets production targets within the mine’s real cycle time, geometry, and fleet constraints.
Start with tonnes per hour, work backward through cycle time and availability, then confirm that the selected truck’s rated payload and dimensions fit the site. Avoid selecting capacity from tonnage labels alone.
FAQ
How do I calculate the required mining truck payload?
Use the production target, cycle time, number of trucks, and expected availability to estimate the payload required per truck, then compare that result with model-rated capacity.
Does a 10T truck always move 10 tonnes every trip?
No. The rated load must be confirmed for the exact model, and actual payload can be lower because of material density, volume, loading conditions, or operating restrictions.
How does material density affect truck capacity?
Material density determines how much mass occupies the hopper volume. Dense material can make the truck weight-limited before the body is full.
Should I use fewer large trucks or more small trucks?
It depends on tunnel geometry, haul distance, loader size, traffic, ventilation, maintenance, and production targets. Model both options with realistic cycle times.
What is the biggest capacity-selection mistake?
Choosing a truck from the nominal tonnage class without calculating actual cycle output and checking route fit.
References
- Mineloaders — Mining Truck Product Range
- Mineloaders — 5T Mining Transport Vehicle
- Mineloaders — 10T Mining Transport Vehicle
- Sandvik — Toro TH545i Underground Truck
