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五十年代末期,美国Le tourneau公司首先在载重量为20～29吨的《Haupak》自卸车系列上采用了油气悬架。这种油气悬架后来又在更大吨位《Haupak》系列上采用。1969年该公司生产了装有油气悬架的六种型号的二轴自卸车,其载重量为31.8～109.3吨。美国凯特皮勒公司在载重量为31.8吨的Cat—769B型和载重量为77.1吨的Caterpillar—779型二轴自卸车以及载重量为91吨Cat—783型三轴自卸车上都采用了油气悬架。生产大吨位露天矿用自卸车的某些其它美国公司也放弃了传统的钢板弹簧悬架而采用了油气悬架。例如,在载重量为59吨的《MichiganT—65》型自卸车上,今后将装用油气悬架。
In the late fifties, Le Tourneau, Inc. of the United States first adopted hydro-pneumatic suspension on the “Haupak” dump truck with a capacity of 20-29 tons. This oil and gas suspension was later adopted in the larger tonnage “Haupak” series. In 1969, the company produced six models of two-axle dumpers with oil and gas suspension with a payload of 31.8 to 109.3 tons. The Cathay Pacific Oil and Gas Company has adopted Cat-769B with a capacity of 31.8 tons, Caterpillar-779 with two-axle with a capacity of 77.1 tons and a three-axle dump with a capacity of 91 tons of Cat-783 Suspension. Some other U.S. companies that produce large tonnage open-pit dump trucks have also abandoned the traditional leaf spring suspension and adopted oil and gas suspensions. For example, on a Michigan T-65 dump truck with a capacity of 59 tons, an oil and gas suspension will be installed in the future.