How to Choose the Correct Hub and Drum Assembly for a 7,000 Pound Axle  

Question:

Expert Reply:

We can figure out which hub and drum assembly that you'll need without emailing pictures. Nonetheless, you can certainly send them to my email if additional details are necessary.

Here's what you'll need to choose the correct hub and drums for your trailer. Start off with determining the bolt pattern of your hubs. Check out the attached link that provides details on how to do this. The typical bolt pattern for a 7,000 pound axle is 8 on 6-1/2 inch by the way.

After that we'll need to determine which inner and outer bearings that your existing hub uses. The inner and outer bearing numbers should be stamped into the side of the bearings. If the bearing numbers are not visible, you can also use a digital caliper # PTW80157 to obtain precise measurements of the spindle. The spindle will need to be measured at the inner and outer bearing seats. I have attached a photo showing where to measure the spindle for bearing inner diameters, and I have linked a digital caliper review video as well.

If you follow up with those details, I'll help you choose the correct hub assemblies. You can also check out the attached link that will guide you to the page with all your replacement hub options. Start by selecting your axle capacity, bolt pattern, wheel size and wheel stud diameter. Next you will choose the correct inner bearing number followed by your outer bearing number to find a complete listing of hub assemblies that will fit your application.

expert reply by: Edward F

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