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How to Choose a Replacement Trailer Axle

The following information will assist you in making a choice of running and trailer axles gear from our broad range of options. You can also contact your branch to have someone from our sales staff help you choose the most appropriate products.
How do you determine how much weight of the vehicle is gross (GVW)

When building a trailer the Gross Vehicle Weight (GVW) must be established for the purpose of selecting 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

When determining 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 lbs. per axle.


The first step is to determine whether you would like brakes on every axle. Many states require to ensure that each axle is equipped with brakes. Certain states insist that all axles must have brakes. To determine the number of brakes are required in a state, you can contact your nearest Department of Motor Vehicles. Next, you must determine the kind of brake you would like that you like: Electric, Hydraulic Single-Serve, Hydraulic Free-Backing Hydraulic Duo-Serve Hydraulic disc or air “S” Cam Brakes.

What Types of Spindles Will be required?

Straight spindles are typically used when the bed is above the tires, or when a round clearance of low g is not necessary. For instance, flat beds or pull-type utility trailers and so on. Drop spindles are utilized for when the smallest possible round clearance is needed. Examples include Livestock and Horse Trailers, Car Haulers, Enclosed Cargo Van Trailers and more.

What are the Centers of Spring? Centers

Springs Centers refer to an The CL (centerline) measurements of spring mounting pads that are 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 on trailer axles will vary based what the capacities of an axle. The Bolt Pattern is also a determinant of what type of wheel and tire can be utilized. If you have a particular wheel or tire that you would like to utilize Please share that information to us in order for us to assist you determine the right Bolt Pattern and the appropriate 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 options and terminology used to describe the process the most commonly used phrase refers to “Hub Face,” which is the measurement that runs from the point of the wheel’s stud, to the wheel’s base stud at the other end of the axle. Another term commonly employed refers to “Track” . Track refers to the middle of the tire that is its center on the other tire. The measurement is different based on the type of wheel is being used, as each wheel (White Spoke, OEM, Custom) may have an offset that differs, thereby changing the center of the tire.

What Type of Springs

There are two main spring types to pick among: Double Eye or Slipper Springs. Double Eye Springs are used for suspensions that use shackles. Slipper Springs can be described as the tough springs that are used in slipper suspensions. Sets of complete springs as well as U-bolt kits are available with axles.

Which Hanger Kit?

There are a variety of Hanger Kits that you can choose from: single, tandem , or triple for double eye as well as 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.