ABEC 7 chrome is a high-precision bearing on the ABEC scale, made of the highest quality chrome steel. It is characterized by the lowest rolling resistance, which translates into the highest speed in the American Annular Bearing Engineering Committee (ABEC) standard. A key parameter of this bearing is eccentricity, or the roundness of the inner ring, which is just 0.0025 mm. A specially designed metal-rubber cover protects the bearing from unwanted contamination. This bearing is intended for roller skates, skateboards, and scooters.
