Selecting Correct Bearing Buddy for 8-Lug Hub on 7000-lb Axle on PJ Dump Trailer

Question:

I have a PJ dump trailer with 8 lug 7 k axles. How do I figure out which buddy bearing is the correct part?

asked by: Steve H

Expert Reply:

Selecting the correct Bearing Buddy bearing protector for your 8-lug hubs requires that you know the hub's bore where the grease cap (or Bearing Buddy) fits. This requires using a precision digital or dial caliper and measurement to the nearest thousandth - 3 decimal points. You also want to note whether you hubs are threaded or non-threaded as we offer both types of Bearing Buddy.

For example, we offer an 8-lug hub for 7K axles, part # 8-219-4UC3, and this hub's bore happens to be 2.720-inches diameter.

Once you know your hub's bore dimension you can use the link at right to select a Bearing Buddy with a diameter that is nearest to that bore. In the above example, you would want to use Bearing Buddy # BB2717 which has a 2.717-inch diameter.

expert reply by: Adam R