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How To Select Trailer Axles

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This information is intended to assist you in making a choice of running and trailer axles gear from our variety of options. You can also visit your local branch and let any of our sales representatives help you choose the best products.
How do you determine how much weight of the vehicle is gross (GVW)

When building a trailer the Gross Vehicle Weight (GVW) is to be calculated to determine the appropriate trailer axles for the purpose. The GVW comprises both the mass of the trailer empty as well as that of planned cargo. (Example: 2,000 lb. empty weight of the trailer + 8000 pounds. freight = GVW 10,000 pounds.)

How Many Axles

Once you have determined the GVW, the size and quantity of the axles should be determined. For instance, if you need 10,000 lbs. GVW and you want tandem axles for your vehicle, then the minimum capacity is 6,000 pounds. per axle.


First, decide the need for brakes on every axle. The majority of states require to ensure that each of the axles has brakes. Certain states insist that all axles must have brakes. To find out how many brakes are required in one state, call with the state’s regional Department of Motor Vehicles. Then, decide on the type of brake you like that you like: Electric, Hydraulic Single-Serve, Hydraulic Free-Backing Hydraulic Duo-Serve Hydraulic Disk or Air “S” Cam Brakes.

What Types of Spindles Will be required?

Straight spindles are typically used in situations where the bed is higher than the tires, or when low-g round clearance is not necessary. Examples include flat beds and pull-type utility trailers etc. Drop spindles are employed to achieve the lowest round clearance is required. Examples include Livestock and Horse Trailers, Car Haulers, Enclosed Cargo Van Trailers and so on.

What are the Centers for Spring? Centers

The Spring Centers represent their centerline (centerline) measure of Spring Mounting Pads located on the axle. The Spring Centers will usually be closely matched to the frame length that the trailer.

Which Bolt Pattern?

The Bolt Pattern of axles may differ based upon the size of axle. The Bolt Pattern also determines the type of wheel and tire can be utilized. If you have a particular wheel and tire you’d prefer to use then please share the information to us so that we can assist you determine the right bolt design and axle.

What is the length of the Axle

It is the next stage to measure the size of the axle on the trailer. There are many methods and terms used by industry to describe this process the most commonly used phrase refers to “Hub Face,” which is the measurement that runs from the point of the wheel’s axle, to the wheel’s base stud at the other end of the axle. Another term that is frequently employed refers to “Track” . Track is the distance from the center of the tire, and it’s center in the other tire. This measurement differs based on the type of wheel that is being used, as every type of wheel (White Spoke, OEM, Custom) might have an offset that differs, thereby changing the tire’s center.

What Type of Springs

There are two main spring types to pick among: Double Eye or Slipper Springs. Double Eye Springs are used in conjunction with shackle suspensions. Slipper Springs comprise the tough springs that are used in slipper suspensions. Spring sets that are complete as well as U-bolt kits can be purchased with axles.

Which Hanger Kit?

There are a variety of Hanger Kits available – single, tandem , or triple for double eye and slipper springs. Hanger Kits comprise of spring Hangers that are attached to the frame and equalizers (tandem and triple hanger Kits) as well as Shackle Straps (if double eye springs are used) and all the required hardware.