How to Determine Which Bearings are Needed For Travel Trailer

Updated 06/27/2014 | Published 06/26/2014

Question:

How can I tell what bearing kit I need for my travel trailer?

asked by: Jim

Expert Reply:

To determine the necessary replacement bearings, you'll need to pull one of your hubs and obtain the reference numbers off your existing bearings, both inner and outer. You'll also need the diameter of the hub bore where the grease seal sits as well as the grease seal journal surface of the spindle, which will provide the inside and outside diameter of the grease seal you need.

If you can't find the reference numbers off your bearings, you can get the diameter of the inner and outer bearing journal surface of the spindle. These measurements need to be very precise, so use a digital caliper. A ruler or tape measure will not provide enough accuracy.

If you get back with me and provide these dimensions, I'd be happy to make some recommendations.

expert reply by: Mike L