Measuring to Identify Bearings and Seals for 1948 Palace Royale Travel Trailer

Question:

Hello: I’m looking for updates part numbers so I can get correct wheel bearings / grease seals for a 1948 Palace Royale travel trailer I recently purchased. Here are the part numbers: Bower UT2585 Bower BT1380 National 5009 seal Any and all help appreciated.

asked by: Todd

Expert Reply:

I checked a bearing/seal cross reference to find the dimensions of your parts UT2585, BT1380 and 5009 but I was not able to get confirmed dimensions for these bearings and seal.

So what you will want to do is take precise measurements of your trailer's spindles and rear hub bore to allow matching up to currently available parts. If you refer to the linked photo you will see where to measure your spindles and hub. For your grease seal, use the spindle dimensions for the seal's inner diameter and the hub bore for the seal's outer diameter. For the bearing the spindle dimension will correspond to the bearing inner diameter.

You'll need to measure to a close tolerance, the nearest thousandth of an inch like 1.234-inches, using a precision caliper.

Once you have the dimensions you can use the linked page for bearings and seals to search on those dimensions. I also linked for you two helpful articles on the most popular bearing sets (based on axle rating) and on how to replace these items.

expert reply by: Adam R