Bearings BSB ABEC 7 Micro (single)

BSB bearings are quality bearings whose ABEC number can be compared to some other manufacturers’ bearings rated several numbers higher.

As to what the letter combination ABEC and the number after it mean: ABEC is a so-called standard for wheel bearings, and the number after it indicates the manufacturing precision. The higher the number, the smaller the permitted tolerance between the standard and the actual dimensions of the wheel. And although the difference between ABECs with different numbers is measured in micrometres, a higher number gives better durability and higher speed.