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How to Measure Axle

When you are ordering a trailer axle, below is what you will need to know before making your purchase.


 

If you are lucky, the sticker on the axle is still visible which would tell you the exact axle that you need for a replacement; but most of the time those will be too worn to be legible over time.

  1. The Hub Face Measurement: (the first number 89/xx)
      • Measured from (2 ways to measure)

                  i.    The face of the hub (where the wheel would meet the face of the axle hub from one side to the other)

                  ii.    The center of the tire from one side to the other

      • The Hub Face Ensures

                 i.    The axle length matches what you currently have

                   ii.    The tire will not be too close & rub the frame

                   iii.    The tire will not be too far from the frame and go past your fenders

  1. The Spring Center Measurement: (the second number xx/74)
      • Measured from (2 ways to measure)

                 i.    The center of your spring pads from one side to the other

                   ii.    The center of your trailer frame from one side to the other 

      • The Spring Center Ensures

                i.    That the trailer frame matches your axle

                   ii.    If your spring center is not exact; it will not fit your trailer

  1.  The Bolt Pattern Measurement (5x4.5)
      • The first measurement is the number of lugs on one side of your axle
      • The second measurement is your pattern

                i.    If your axle has an odd number of lugs

      • Measure from the top of one stud, skip over onto the center of the other stud

                ii.    If your axle has an even number of lugs

      • Measure from the center of one stud directly across to the center of the other stud