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With constant exposure to water, mud, grime and rough road conditions, trailer wheel bearings can fail fast. SKF [Trailer bearings] repair kits allow installers to enter the profitable trailer wheel bearing repair business.

If the number is not available, the most accurate way to measure the bearing I.D. is with a micrometer. Be sure to check both the inner and outer bearing measurements before ordering. Hub length or bearing distance should also be considered. Some trailer manufacturers, such as LOADRITE & EZ-LOADER, use a ‘short hub’ on their 1” & 1-1/16” straight axles. The overall hub length is therefore shorter than most other standard boat trailer hubs.

But bearings require regular maintenance, such as greasing, to keep them rolling. With enough wear and tear, you may even have to replace them. If you own a trailer or plan to use one soon, it pays to recognize how bearings work and how to keep them in good repair.

Read the next page to learn just what goes on inside that wheel assembly and what exactly those bearings are doing.

The next move is to remove the wheel hub, which should simply slide off the central spindle if everything is in good condition. Next, pull the outer skf bearing off the hub. You may have to rock the hub or tap it with a mallet if the outer bearing is stuck. If you can't get it to move at all, you'll need to apply more force or take it to a garage. Once the hub is off the spindle, lay it down with the outer bearing facing up. Then remove the outer bearing (the bearing and race assembly closest to the outside of the wheel) and spindle washer, and set them aside. Next, pry off the inner seal and remove the inner bearing.

We supply bearings for all types of boat trailers - both tapered roller and ball bearings. The most popular bearings fitted to trailers are Tapered Roller koyo Bearings. They come as two separate parts called the cup and cone.

KTR 201 80x120

KTR 201 40x65

KTR 201 35x60