Bearings are comprised of a large outer ring and a smaller inner ring. Between these rings are small steel balls. These are what enable the wheels to turn. On either side of the rings are covers, called shields, which prevent the bearings from getting dirty. In order to keep the balls in position, they are contained inside of a so-called “ball cage.”

Every skateboard wheel is equipped with two bearings. If you want, you can fill the space between them with a spacer. This small metal cylinder prevents the bearings from being forced into the centre of the wheels when tightening the axle nut and getting damaged. Furthermore, spacers ensure that your bearings remain parallel with each other. Spacers are particularly prudent if you have soft wheels or so-called “non-core wheels”.

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When the bearings are completely dry, apply one to two drops of bearing oil per bearing. Hold the inner ring with thumb and index finger and turn the outer ring a little to distribute the oil.

Put the bearings onto the bolt in the lid. Put a spacer between each bearing. The balls of the bearings should point upwards, the cages should point downwards.

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We’ll show you exactly how to mount your wheels on your trucks and how to get the bearings into your wheels in our Skateboard Assembly Instructions and in the comprehensive video below. Make sure that you don’t use excessive force when attempting to insert your bearings, as not to damage the wheel core or bearing.

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If you don’t have a special cleaning container, you can also use a small bowl. We also recommend a drop cloth that can get dirty and some gloves. Attention: degreasing cleaning agents like acetone can be harmful to your health. Follow the instructions on the packaging and make sure there’s good ventilation in the room where you’re doing the cleaning. The following instructions will show you how to clean skateboard bearings using a Bones Cleaning container. Oil and cleaning containers for bearings can be found in our skate shop.

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There are, of course, always new and exciting developments in the realm of bearings. There are now skateboard bearings with parts made out of titanium or extra-hard balls made of tempered ceramic. These special technologies offer a longer lifespan and are naturally also more expensive.

Then carefully remove the rubber covers (shields) of the bearings (e.g. with a safety pin). Be careful not to bend or damage the shields.

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• Turn your deck on its side, so that the axel is pointing upwards. • Loosen the axle nut and remove the top speed ring. • Take the wheel off the axle, and slightly reinsert it at an angle. Like this, you should be able to pry the bearing from the wheel core. • Make sure you don’t apply too much force, or you’ll damage the bearing. It will take a little muscle though.

You can also choose to skate with ball bearings without shields, which are open or semi-open. If you do skate with open or semi-open bearings, they will indeed be more susceptible to contamination, but they will be somewhat faster. Many skaters enjoy the slightly louder sound of a skateboard with open bearings.

Remove the bearings from the container and let them dry on a suitable surface. You can also carefully tap the liquid from the bearings.

An important point when it comes to bearing care is maintenance. Cleaning your bearings extends their lifespan and often makes old bearings fast and smooth again.

For this very reason, we have “Skate Tested Bearings” or “Skate Rated Bearings.” These are usually more resistant and have been specifically developed to meet the demands of skateboarding; for instance, the impact on the bearings when landing tricks, or the lateral forces when turning.

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If your wheels are worn out, but your bearings are still in working order, you can get them out from your wheels in a few easy steps.

Fill the container with cleaning fluid (the container doesn’t need to be full) and close it. Then shake for a few seconds. Allow the liquid to work for a bit.

The urban legend is that the higher the ABEC rating, the better and faster the bearings. But as is the case with most myths and legends, this one is for the most part nonsense.

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The bearings you’ll find in the skatedeluxe Skate Shop fit in every standard wheel and work with every standard axle. When choosing your bearings, therefore, you don’t have to worry about the size.

ABEC 7 or 9 bearings can reach 20,000-30,000 rpm at their full potential. For a 54mm wheel, this would correspond to a speed of over 200 km/h. For this reason, some manufacturers now renounce ABEC rating although it can still give a rough first impression of the quality of the bearings. As far as the relevance for skating and speed goes, the ABEC rating says quite little because skateboarding impacts bearings very differently than the traditional industrial uses.

The acronym ABEC stands for “Annular Bearing Engineers Committee,” and is a standard for how fine the rolling elements are. The higher the ABEC rating, the lower the tolerance for error in the manufacturing process. The rating does provide reliable information on the quality of the bearings. However, because the RPMs achieved when skating are so comparatively low, the rating is all but irrelevant. The full potential of a high ABEC rating would unfortunately never be reached because of the relatively low speeds achieved in classic skating.

View the complete line of GMN precision ball bearings. See large variety of styles and customized options that we have available for you to choose from.