ABEC 5: A standard value used to measure the tolerance of the surface 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 5: Steel balls Grade 5: balls with a sphericity precision of 5/1,000,000. This is military-grade and therefore excellent for precision applications. ABEC 5 standard: this bearing must pass all tests; these include high-speed noise, very tight tolerances concerning accuracy of inner and outer diameter, perfect sphericity, raceway accuracy, and the finish of both raceway and ball. These bearings are treated with a high-quality Teflon lubricant (Rheolube 374A). LLB: Our most popular seal, consisting of a rubber finish with a metal core. Unlike the standard 2RS, we go a bit further by machining a recess in the inner ring, where the seal can rotate with excellent efficiency and resistance compared to an inferior bearing. Rather than a single "lip" of a thick seal that rubs against an uneven surface, the LLB type uses 2 sealing lips, fine as a razor blade that slides into a recess 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 71806LLB EAN 810191013402 Brands Enduro Outside diameter bearing (mm) 42 Inside diameter bearing (mm) 30 Bearing height (mm) 7 Type ABEC 5