Definition: Bearings are the two round metal rings that fit inside the hub of each inline wheel. The purpose of skate bearings is to help the inline wheels rotate freely by reducing friction between the wheel and the axle on the skate frame. Bearings are rated on the ABEC scale which measures the precision tolerance. Most skate bearings are produced in China, but many come from Japan, Germany, Switzerland, Canada and the USA.
What are Bearings Used for on Inline Skates?
By Carlesa Williams, About.com
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