What Size Are My Wheel Bearings?

By now, hopefully you have a general idea of what your wheel bearings are and what they do. If not, refer to our previous posts from this month. Perhaps you’ve realized that you need to replace your bearings, or you just want to be more in tune with the inner workings of your trailer. Either way, it is important to know that one size wheel bearing does not fit all.

Trailer wheel bearings are specific to the spindle installed on your trailer axle. To determine the size you need for your trailer, you will need to take apart your hub. Make sure the trailer is supported with a jack, then remove the wheel and tire. Next, take off the grease cap, cotter pin, and washer. If you are already confused, you may want to take a look at some of our other blog posts about trailer hubs, or call your local mechanic. If you’re sticking with us, the next step is to remove the spindle nut, and then the hub itself.  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.

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