ENDURO BEARINGS Ch 71903 llb - ceramic hybrid (angular contact) - 17x30x7

Upgrade your bicycle with this high-performance ABEC-5 ceramic-hybrid angular-contact bearing, designed for durability and precision. Featuring deep-groove 52100 high-carbon chromium alloy races and Grade 5 silicon-nitride ceramic balls, it ensures smooth operation and extended bearing life. The dual-lip labyrinth (LLB) seals provide excellent protection against dirt, water, and debris, while the 90% filled Mobilux NGLI 2 waterproof synthetic grease guarantees optimal lubrication under high pressure. The Si3N4 ceramic balls reduce wear and eliminate steel-on-steel contact, enhancing longevity. Proper installation (seal facing inward) and adjustment allow the bearing to engage all balls, distributing force evenly, reducing friction, and increasing lifespan. Ideal as a front hub bearing or pivot bearing, with the MAX-type version suited for suspension systems. Enduro bearings are available in high-carbon chromium steel, 440C stainless steel, ceramic-hybrid, and XD-15 variants with ceramic or stainless balls. Engineered with deep groove races and dual-lip seals, these bearings offer superior protection against environmental elements. Static load capacity: 573 lbf / 2.55 kN | Weight: 14.47 g.