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-quality carbon. 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 machining a notch in the inner ring, where the seal can rotate with optimal efficiency and resistance to a lesser bearing. Rather than a single "lip" of a thick seal that rubs against an uneven surface, the LLB type uses 2 lips of seals, razor-thin, that glide 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 MR24371LLB EAN 810191013891 Brands Enduro Bearing height (mm) 7 Bearing inner diameter (mm) 24 Bearing outer diameter (mm) 37.1 Type ABEC 3