Haul truck

A haul truck, alternatively known as a mining truck, giant dump truck, or a giant hauler, is an off-road, heavy-duty dump truck specifically engineered for use in high-production mining and exceptionally demanding construction environments. Most are dual axle; at least two examples of tri-axles were made in the 1970s. Haul trucks are denominated by their payload weight capacity.

Description

Most haul trucks have a two-axle design, but two well-known models from the 1970s, the 350T Terex Titan and 235T WABCO 3200/B, had three axles. Haul truck capacities range from to nearly .

An example on the smaller end is the Caterpillar 775 (rated at ). Quarry operations (which produce payloads that have value) typically employ smaller trucks than mining operations (such as removing undesirable overburden, an expense).

Haul trucks can generally be distinguished from standard dump trucks by:

Being far too large to travel legally on public roads Having a dump body made of exceptionally strong steel plate that extends over the cab to protect it, angled upright at its end (or entirely) to aid in dumping; some are heated by exhaust gases to prevent loads from sticking or freezing to the bed; Having a driver's cab narrower than its body; No axle suspension; Limited speed and operating range; Special off-road only tires; A ratio of dead weight to payload not exceeding 1:1.6

Most large haul trucks use some form of traction motors coupled to regenerative braking for power, braking, or both.

Haul trucks are classified by: Type of unloading (dump or rear-eject); Direction of discharge (side, rear); Type of body (hopper, platform, sliding hopper, sliding platform).

Ultra class

The largest haul trucks, with a payload capacity of or greater, are referred to as ultra class trucks. , the BelAZ 75710 is the truck with the highest payload capacity, .

Notable examples +Ultra-Class Haul TrucksNo image model manufacturer firstmodel Engine Power (HP) capacity 1 BelAZ 75710 BelAZ 2013 2 × MTU 16V4000 diesel engines4,600 hp combined 2XCMG XDE440XCMG2022MTU 20V40004,000 hp441 short tons (394 long tons)3Caterpillar 798 ACCaterpillar 2019Cat C175-163,500 hp410 short tons (366 long tons)4Caterpillar 797FCaterpillar2009Cat C175-204,000 hp401 short tons (358 long tons)5 Liebherr T 284 Liebherr 2004 MTU 20V4000 C22 or Cummins QSK954,000 hp 6 Bucyrus MT6300AC Bucyrus International 2008 MTU 20V40004,000 hp 7Terex MT6300ACTerex2008MTU 20V40004,000 hp400 short tons (357 long tons)8Komatsu 980E-5SEKomatsu2019Cummins QSK954,400 hp400 short tons (357 long tons)9 XCMG XDE400 XCMG 2015 MTU 20V40004,000 hp 400 short tons (357 long tons) 10Komatsu 980E-4Komatsu2016Cummins QSK783,500 hp400 short tons (357 long tons)

Haul truck

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