How to Determine Replacement Trailer Wheel Bearing Sizes

Question:

Are all trailer wheel bearings the same size? Like the one you sell, fits all

asked by: Dave B

Expert Reply:

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer.

You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the spindle nut, remove the spindle nut, and then you will be able to remove the hub from your trailer.

Once the hub is removed you will be able to get the part numbers from the inner and outer bearings to determine the correct replacement parts for your spindles.

I have attached a photo of the parts showing where the part numbers are located and the areas that you will need to measure if your parts do not have part numbers etched on them.