Humphreys Hitch and Trailer Parts

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How To Order Replacement Hub or Hub and Drum

Collecting the information below will simplify the ordering of hub or hub and drum for your axles.

  1. Determine the Bolt Pattern of the Hub. (examples: 8 on 6 1/2" or 5 on 4 1/2" are two common patterns)
  2. Determine The Inner and Outer Bearing Numbers. Note whether the bearing use grease or oil bath lubrication.
  3. Measure the old hub seal to insure that the I.D and O.D dimensions will be the same.
  4. Verify the Stud Diameter.
  5. If the axle is a brake axle, measure the diameter and width of the brakes to determine brake size
  6. Look for any casting numbers on front or rear of the hub or hub and drum.
  7. On heavier axles, such as Dexter 8 Or 9K, you need to determine the hub pilot diameter. this can be accomplished by measuring the center hole of your wheel.
  8. On 8K and larger axles determine if it is equipped with ABS, and requires a drum/rotor with ABS exciter ring installed.