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What are the differences between single axle and double axle?

1 Answers

DelSadie

07/30/25 8:35am

The differences between single axle and double axle are as follows: The number of drive axles is different: A double axle vehicle has 2 drive axles, while a single axle vehicle has only one drive axle. The load capacity is different: Single axle trucks have a relatively small load capacity, mostly 2-5 tons, with 4 wheels at the rear, while double axle trucks have a larger load capacity, commonly referred to as 'rear eight-wheelers'. Off-road performance is different: Double axle vehicles have better off-road performance compared to single axle vehicles, as single axle vehicles are more prone to rear differential and axle shaft failures. The design of the drive axle should meet the following basic requirements: Requirement 1: The selected final drive ratio should ensure the vehicle has optimal power performance and fuel economy. Requirement 2: The external dimensions should be small to ensure necessary ground clearance, mainly referring to minimizing the size of the final drive. Requirement 3: Gears and other transmission components should operate smoothly with low noise. Requirement 4: High transmission efficiency under various speeds and loads. Requirement 5: Under the premise of sufficient strength and rigidity, the mass should be minimized, especially the unsprung mass, to improve vehicle ride comfort. Requirement 6: Motion coordination with the suspension guiding mechanism; for steering drive axles, it should also coordinate with the steering mechanism. Requirement 7: Simple structure, good processing technology, easy manufacturing, and convenient disassembly, assembly, and adjustment.

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