Why is a Semi Trailer called a "Semi Trailer"? What's the reason?

Posted on 2025-06-11

keywords : Semi Trailer

In the field of logistics and transportation, Semi Trailers are a common means of transportation. There are many types, including flatbed, low-bed, box, tank, container, skeleton, etc., which are used to meet the transportation needs of most goods. So, are you curious why a Semi Trailer is called a "Semi Trailer"? Let's talk about it today.

The key to the word "Semi Trailer" lies in the word "half". Unlike a full trailer, the front of a Semi Trailer is not completely independent, but is connected to the tractor "i.e. the front of the vehicle" through a device called a "traction pin".

Semi Trailers

The traction pin is usually located above the rear axle of the tractor, while the front end of the Semi Trailer has a matching traction seat. When the two are connected, half of the weight of the Semi Trailer is borne by the tractor, and the other part is supported by the Semi Trailer's own wheels. Therefore, this connection method is not a full suspension, but a "semi-suspension", so it is called a "Semi Trailer".

This "Semi Trailer" design brings significant advantages. First of all, it improves the stability and handling of the vehicle. Since the tractor bears part of the weight, the Semi Trailer is more stable during driving and is less likely to roll over when turning.

Secondly, this design makes the vehicle's cargo space larger and the transportation efficiency higher.

In addition, the loading and unloading of the Semi Trailer is more convenient, and it can be quickly separated and connected through the hydraulic lifting device, which greatly improves the work efficiency.

Yika Semi Trailer Manufacturer has more than 14 years of production experience and a large number of customer cases, and can produce products that satisfy customers according to customer needs. The Semi Trailers, container logistics vans, van Semi Trailers, low-bed Semi Trailers, flying wing Semi Trailers, automatic tarpaulin Semi Trailers, skeleton Semi Trailers, 17.5-meter Semi Trailers, sand and gravel sealing vehicles, cement tankers, and dry mortar series products we produce are all high-quality guaranteed. We are always committed to providing customers with quality services and look forward to your cooperation!

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