Specifications
Off Highway Trucks / Dumpers Category Spec Sheet
Off-Highway Trucks are robust vehicles designed for transporting large quantities of material over rough terrain in mining, quarry, and heavy construction environments. They are categorized by their payload capacity and are engineered for durability and efficiency in high-demand applications, offering powerful engines and heavy-duty components.
AI-updated monthly · Last refresh 7/18/2026
Specifications by system
Engine
Horsepower400-4,000 hpDetermines power for hauling heavy loads and climbing grades.
Engine Displacement10-90 LitersLarger displacement correlates with higher power output and torque.
Fuel Tank Capacity150-1,500 GallonsAllows for extended operation hours between refueling.
Number of Cylinders6-20Typically V-configuration for larger engines.
Operating
Rated Payload Capacity30-400 TonsThe maximum weight of material the truck can safely carry.
Max Travel Speed25-45 mphSpeed when unladen, varies with grade and load.
Service Brake TypeOil-cooled multi-discDesigned for heavy-duty stopping and heat dissipation.
Turning Radius30-70 ftIndicates maneuverability in confined spaces.
Body
Body Capacity (Struck)20-250 cubic yardsVolume of material when level with the top of the body.
Body Capacity (Heaped 2:1)25-350 cubic yardsVolume of material with a typical heaped load.
Body Raise Time10-25 secondsTime to fully raise the dump body.
Suspension
Front Suspension TypeHydro-pneumaticProvides shock absorption and stability on rough terrain.
Rear Suspension TypeHydro-pneumatic with strutCommon for heavy-duty applications to support large loads.
Axle Load Rating (Front)50,000-400,000 lbsMaximum weight capacity on the front axle.
Dimensions
Overall Length25-50 ftTotal length from front bumper to rear of the body.
Overall Width12-30 ftTotal width of the truck, usually over tires or mirrors.
Overall Height (Body Lowered)12-25 ftHeight from ground to top of cab or highest point with body down.
Ground Clearance1.5-3 ftMinimum distance from the ground to the lowest part of the chassis.
Operating Weight100,000-1,200,000 lbsWeight of the truck with standard equipment, without payload.
Weight classes
| Class | Weight range | Typical use |
|---|---|---|
| Small/Mid-size Rigid Haulers | 60,000-200,000 lbs (payload) | Smaller mining operations, heavy construction, quarry work |
| Large Rigid Haulers | 200,000-600,000 lbs (payload) | Medium to large-scale mining, major infrastructure projects |
| Ultra-Class Rigid Haulers | 600,000-1,200,000 lbs (payload) | Massive open-pit mining operations, oil sands |
Common attachments
Standard Dump BodyTailgateWear Liner KitsCold Weather PackageFast Fuel SystemAutomatic Lubrication SystemRock EjectorsHeated Body
Typical price ranges
Used Entry-Level/Older Models
$150,000 - $800,000Potentially high hours, may require significant maintenance or refurbishment.
Used Mid-Range/Newer Models
$800,000 - $3,000,000With moderate hours, good condition, or recent major component overhauls.
New Smaller-Medium Models
$1,500,000 - $5,000,000Brand new trucks with full factory warranty, entry to mid-payload capacities.
New Large/Ultra-Class Models
$5,000,000 - $15,000,000+Top-tier, highest payload capacities, custom configurations, often for large mining operations.
Buyer tip: Always verify exact specifications with the manufacturer's data sheet for the specific model and year. Consider service history, component life remaining, and local emissions requirements when purchasing used equipment.