How to Determine Which Bearings Needed for Trailer Axle

Published 08/12/2016

Question:

I Have a used Montgomery Ward trailer dont know the year. Model 8905. Serial 95X-33659 if that helps.. Hope you can help me

asked by: Enrique

Expert Reply:

I was unable to find any specific information about your trailer but I can help you determine which bearings you will need. If you have the old bearings they should be stamped on the back with the part number.

If you do not have them or the number isn't legible you'll have to measure the inner diameter of the bearings or the diameter of the spindle where the bearings sit. I recommend using a digital caliper like # PTW80157 because you will want to make sure your measurements are as precise as they can be. Once you have measured you can search by size to find the correct ones.

I've attached a help article that goes over the process in greater detail. As well as a photo that shows what can be measured to determine the correct bearings.

expert reply by: Charles S