How to Determine the Position of the Trailer Axle?

The correct placement of the trailer axle can allow the trailer to be towed safely and easily. If the trailer axle is placed too far back and the weight percentage of the cargo carried on the trailer hitch is too high, it will cause excessive wear on the trailer suspension and tires. If the trailer axle is placed too far forward and the tongue weight of the trailer is not enough, the trailer will shake severely, leading to some safety accidents. The following is the method for determining the position of the trailer axle.

These are the goals that drive trailer axle position:

1.Stable, predictable towing.

2.Proper weight balance for both the tow vehicle and the trailer.

There is a lot in these goals including trailer construction (straightness, flatness, perpendicularity, etc.), proper stiffness, and more. However, with respect to axle position, we need to follow some well-proven guidelines and according to the actual situation analysis.

Start by measuring the length of the trailer cargo box or platform, but do not include the trailer tongue. Multiply this length by .4. The resulting number is the distance from the rear of the cargo box to the center of the axle. For example, the math for a 10-foot box is: 10 x.4 = 4. So, in this example, simply mount the axle so that the axle center point is four feet from the rear of the trailer.

The mounting point for a double axle setup is calculated in the same manner as the single-axle above, except that the calculated number is the center point between the two axles. Using the same 10-foot cargo box as our previous example, we would make a mark four feet from the back of the trailer. This mark represents the center of the equalizer for the front and rear springs. When this distance is known, the total length of the spring and half the equalizer is taken, and the other spring mount is welded at that distance from the center mark.

By calculating the total length of all the axles, springs, and equalizers to determine the center of the assembly any number of axles can be added to a trailer. Simply mount the axles where the center of the assembly matches the 40 percent mark on the trailer frame. On a three-axle placement, for example, this would mean the center of the middle axle was at a point 40 percent in from the rear of the trailer.

The position of the trailer axle will affect the running state of the trailer, so we must pay more attention to it. If you want to know more about the trailer axle after reading the above content, you can contact us for a more comprehensive solution.

As a professional manufacturer of trailers and accessories, we have accumulated rich manufacturing experience in this field. We have a strict manufacturing department and have also established a complete quality inspection system, which can control the quality of products in all aspects. At the same time, we can also provide thoughtful one-stop service according to customer needs. If you want to buy our trailer axle, please contact us immediately!