What is the difference between single axle and double axle?
2 Answers
The main differences between single axle and double axle are as follows: 1. Different load capacities: Single axle vehicles have a relatively small load capacity with 4 wheels at the rear; Double axle vehicles have a larger load capacity with 8 wheels at the rear. 2. Different drive axles: A single axle vehicle has only one rear axle, which is definitely the drive axle; A double axle vehicle has two axles - the middle axle and the rear axle. The middle axle is the drive axle, while the rear axle can be either a drive axle or a tag axle. Additional information: The axle, also known as the shaft, is connected to the frame (or load-bearing body) through the suspension, with wheels installed at both ends. Its function is to transmit forces and moments in all directions between the frame (or load-bearing body) and the wheels. Based on the role of the wheels on the axle, axles are classified into drive axles, steering axles, steering drive axles, and support axles, with steering axles and support axles both belonging to the category of non-drive axles.
The main differences between single-axle and tandem-axle vehicles lie in their load-bearing capacity and structural design. Single-axle vehicles typically have only one rear axle, featuring a simpler structure and greater maneuverability, making them particularly convenient for short-distance urban transportation. In my daily usage, I've noticed that single-axle vehicles have a smaller turning radius, are easier to park, and are suitable for light cargo distribution, such as small delivery vans or material transport at construction sites. However, they tend to become unstable and less safe when overloaded. Tandem-axle vehicles, on the other hand, have two rear axles that distribute more weight, significantly increasing load capacity, making them ideal for long-distance heavy hauling. Large logistics trucks or trailers often use this design. However, they require more space for turns and are slightly more cumbersome to drive. The choice between the two depends on cargo volume and road conditions—single-axle vehicles are more fuel-efficient and economical, while tandem-axle vehicles are better suited for heavy-duty tasks.
