How to Find the Spindle Number on a Trailer Axle
Updated 04/23/2024 | Published 05/16/2023 >
Question:
How to find the spindle number on my single axle trailer
asked by: Michael G
Expert Reply:
It's not common for the spindle number to be printed anywhere on the axle. That said, if you're looking for new bearings/races and seals all you need to do is note the capacity or measure. The easiest method would be to crawl under the trailer and look for the axle tag on the beam. This should give an axle capacity which we can then use to find the bearings based off industry standards. For example, a 3,500 lb axle uses L68149 and L44649 bearings like what comes with the Hub Bearing Kit for Lippert, Dexter, and Al-Ko Axles part # BK2-100. The other option would be to take the hubs off the trailer and either read the part numbers off the old bearings or measure them with a dial caliper to the nearest thousandth of an inch. I have attached an article that goes over this process in more detail.
I have also attached a link with list of our bearing selection.

Product Page this Question was Asked From
Hub Bearing Kit for Lippert, Dexter, and AL-KO Axles - 3,500 lb with #84 Spindle
- Trailer Bearings Races Seals Caps
- Bearings
- Standard Bearings
- Bearing Kits
- Bearing L44649 and L68149
- Race L68111 and L44610
- 3500 lbs Axle
- etrailer
more information >
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Patrick
3/28/2024
Your reply says that you attached an article for measurements. I don't see anything "attached." I need to verify what spindle/axle I have to order the correct 5-5" brake/hub kits.