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How to Find Correct Replacement Bearings and Seal for Harbor Freight Trailer


Hello There, I Have A Harbor Freight Special Trailer. Im Trying To Size The Seals On The Hubs By The Numbers On The Seals. But I Dont Know What The Numbers Mean And They Dont Come Up On Google. The Bearings Are HR 30205j NSKs If That Helps. The Trailer Has No Info On It That I Can See. Any Idea Where A Vin Should Be On These? Any Info Is Greatly Appreciated.


Expert Reply:

Harbor Freight trailers are a big pain to find replacement bearings and seals for (as you're finding out) because they don't standardize their equipment. To find out what you need you're going to have to measure your spindle - I would measure the spindle on both sides of your axle as well just to make sure everything will match up.

Grab a digital caliper that can measure at least 3 places past the decimal, like the Feedback Sports Digital Caliper # 301-17068, and measure where the inner bearing, outer bearing, and grease seal ride. It might also help to measure the outer diameter of your grease seal just to be on the safe side.

Attached is a photo showing where these locations are. Once you measure you can either filter through the linked selection or let me know what you have and I'll see if anything matches up!

Where to Measure on Spindle for Replacemebt Bearing Kit Parts
Where to Measure on Spindle for Replacemebt Bearing Kit Parts
(click to enlarge)
expert reply by:
Jon G

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