BB 61903 LLU/LLB A5C3-blk | 17 x 30 x 7mm Bearing

63800 LLB - ABEC-3 Radial Bearing (C3 Clearance) - 10mm x 19mm x 7mm Extra-wide radial bearing used as a hub bearing for some quick-release hub designs but has more often been used as a pivot bearing, though the MAX-type version of this bearing is better suited for suspension use. This ABEC-3 bearing features deep-groove design races, with Grade 10 balls, full-contact, dual-lip LLB seals and 90% fill with high pressure water proof grease to withstand daily abuse of use and the elements. The Enduro line of bearings are available in high-carbon chromium steel, 440C stainless steel, ceramic-hybrid and XD15 with ceramic or stainless balls. Our bearings are always engineered with deepest groove races possible to accommodate the largest balls and feature dual-lip seals that ride in a micro-groove creating a full labyrinth to provide superior protection against the elements.