How to Measure Hub Bore to Select Correct Size Bearing Buddy

Question:

I have a Star Light Model 19 trailer made by Neosho and I need a set of bearing buddies for it. I dont know what size, do you know/have the bbs Im looking for? Any help would be appreciated. Its an early 90s model 19 if that helps. Thanks.

asked by: Clem G

Expert Reply:

We offer Bearing Buddy bearing protectors in many sizes, all of which are shown on the linked page. You will select yours based on the inner bore dimension of your hubs. Since trailer makers do not maintain detailed specs on things like the hubs installed on their trailers all you'll need to do is measure their bore.

You will need a precision caliper, like the digital unit we offer # PTW80157, to measure the inner bore of your hub. This measurement must be very precise to ensure a proper fit.

You also need to take note of whether your hubs' bore is threaded or smooth. We have Bearing Buddy kits for both threaded and non-threaded hubs. On the linked page just click on the type you need and the dimension closest to your measurement.

Take care not to over-fill the Bearing Buddies with your grease gun. If you get too aggressive with the grease pressure you could blow out your inner grease seals. We offer grease gun # PTW54290 if you need one.

expert reply by: Adam R