ABEC 3: A standard value used to measure the surface tolerance of rolling bearings. There are five classes: 1, 3, 5, 7 and 9. The higher the ABEC class, the greater the precision, efficiency and speed capacity, but the highest ABEC classes are not necessarily the fastest rotating components. All quality manufacturers worldwide use at least ABEC 1 as standard. At Enduro, the minimum standard is ABEC 3. ABEC 3: Steel balls Grade 10. Race in a 52100 chrome alloy and high carbon steel. ABEC 3 standard. Depending on their application, these bearings use LLU or LLB seals; even when marked with 2RS. LLB: Our most popular seal, consisting of a rubber finish with a metal core. Unlike the standard 2RS, we go a little further by mechanically placing a notch in the inner ring, where the seal can rotate with excellent efficiency and resistance to a lesser bearing. Rather than a single "lip" of a thick seal rubbing against an uneven surface, the LLB type uses 2 lips of seals, razor-thin, that slide into a notch with light contact. The outer "lip" keeps water and impurities out, while the inner seal retains grease for smooth rotation and long intervals between maintenance.

Item number MR22371LLB-E EAN 185843000360 Brands Enduro Bearing height (mm) 8 Inner diameter bearing (mm) 22 Outer diameter bearing (mm) 37.1 Type ABEC 3