Where to Measure On Spindle for Replacement Bearings

Question:

Good morning, I smoked a bearing on my boat trailer today. How do I measure the spindle to get a replacement?

asked by: John

Expert Reply:

Sorry to hear about that John! But you will need to use a digital caliper # PTW80157 to measure the diameter on the spindle where the bearings ride shown in the attached picture for a replacement.

Once you get this measurement feel free to come back in the comments and we can help you out, or you can look for it on your own.

expert reply by: Bryce D

Spindle Measurement for Replacement Bearings
(click to enlarge)

Captain J.

4/29/2024

6 - My inner seal seems to be 2 1/4 x 3 3/8. 2- Rear bearing diameter 1 3/4 (25580) 2- Front bearing 1 1/4 (no number) 1- Hub is 6 on 5 1/2 12in truride ( 20110317) 1- Break 023-458-00 left hand 939410181 1- castle nut and (1 in thread diameter) 2 -cotter pins 1- washer Rfq, please quote the list above. If a prepacked hub makes sense advise. Trailer is 15k (5200 per )triple Rockwell axels. Electric breaks. This is a boat trailer used in fresh water. Regards

Bryce D.

5/6/2024

@CaptainJ Hey Cap, thanks for getting those measurements. So for your bearings you can use the Replacement Trailer Hub Bearing # 25580 for the inner and the Replacement Trailer Hub Bearing # 02475 for the outer.