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How to Determine what Replacement Hub and Bearing Kit  

Question:

What is agricultural spindle? I cannot find a hub for my spindle size and wonder if that may be the problem. My spindle size is 1inch x 3.25. It is a homemade trailer.

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Expert Reply:

Thanks for sending a couple pictures! An agricultural spindle is mainly used in agricultural settings and best at low speeds.

The best way to determine the correct parts for your homemade trailer, is to remove the hub from the trailer and either get part numbers from the inner and outer bearings and races, and grease seal or measure the spindle in 3 places and the hub in two places.

I have included a photo showing the places to look for part numbers and places to measure. If the part numbers are not visible on your bearings, races and seal a dial or digital caliper will be needed to get accurate measurements. Using a tape measure or ruler will not be accurate enough.

I am including links to a FAQ page and a video that will help you when replacing the bearings, races, and seals on your trailer.

If you wish to provide your existing bearing, race and seal part numbers, I can double-check to ensure you are getting the correct bearing kit.

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