Haul truck#Ultra class

File:Britannia Mines Truck.JPG 3200 was a rare example of a tri-axle haul truck configuration]]

File:CamionFermont.png

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. {{Sfn|Off-Highway Trucks from Caterpillar|2009}} Haul truck capacities range from {{convert|40|ST|MT LT|1|abbr=on}} to nearly {{convert|500|ST|MT LT|0|abbr=on}}.

An example on the smaller end is the Caterpillar 775 (rated at {{convert|70|ST|LT|abbr=on|sigfig=2|disp=sqbr}}).{{cite web|url=http://www.constructionequipment.com/caterpillar-775g-highway-truck|title=CATERPILLAR 775G OFF-HIGHWAY TRUCK|publisher=ConstructionEquipment.com|date=May 16, 2011|access-date=September 18, 2015|archive-date=July 14, 2018|archive-url=https://web.archive.org/web/20180714135316/https://www.constructionequipment.com/caterpillar-775g-highway-truck|url-status=dead}} Quarry operations (which produce payloads that have value) are typically employ smaller trucks{{why|date=February 2024}} than mining operations (such as removing undesirable overburden, an expense).{{cn|date=February 2024}}

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{{cn|date=February 2024}}

Most large haul trucks use some form of traction motors coupled to regenerative brakings 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).

File:BelAZ 75710 5.png]]

The largest, highest-payload-capacity haul trucks are referred to as ultra class trucks. The ultra class includes all haul trucks with a payload capacity of {{convert|300|ST|LT|abbr=on}} or greater.{{Sfn|Orleman|2000|p=15}} {{As of|October 2013}}, the BelAZ 75710 has the highest payload capacity, {{convert|450|t|sp=us}}.{{Cite web|url = http://www.russiasupplychain.com/belaz-to-build-450-tonne-dump-truck-2013/|title = BelAZ to build 450-tonne dump truck in 2013|last = Rogan|first = Alexander|date = 5 March 2013|url-status = dead|archive-url = https://web.archive.org/web/20130928054957/http://www.russiasupplychain.com/belaz-to-build-450-tonne-dump-truck-2013/|archive-date = 28 September 2013}}

{{Wiktionary|long haul}}

• Articulated hauler
• Dumper
• Haul road
• Rear-eject haul truck bodies
• Unit Rig

{{reflist|30em}}

{{Commons category|Haul trucks}}

{{Refbegin}}

• {{cite book

|last = Orleman

|first = Eric C.

|editor-last = Johnson

|editor-first= Paul

|title = Building Giant Earthmovers

|url = https://books.google.com/books?id=gKhdKFI2iP0C

|access-date = 2010-03-02

|series = Motorbooks Colortech

|date = 2000-11-10

|publisher = MBI Publishing Company

|location = United States of America

|isbn = 978-0-7603-0640-6

|quote = The ultra-hauler class includes trucks with a capacity rating of 300 tons and above.

}}

• {{Cite web

|url = http://www.cat.com/cda/layout?m=169215&x=7

|title = Off-Highway Trucks from Caterpillar

|year = 2009

|work = Caterpillar Website

|publisher = Caterpillar Inc.

|archive-url = https://web.archive.org/web/20090924091047/http://www.cat.com/cda/layout?m=169215&x=7

|archive-date = 2009-09-24

|access-date = 2009-10-21

|quote = Developed specifically for high production mining and heavy-duty construction applications ...

|ref = {{SfnRef|Off-Highway Trucks from Caterpillar|2009}}

|url-status = dead

}}

{{Refend}}

{{Mining equipment}}

ru:Самосвал#Внедорожные (карьерные) самосвалы