CeramicSpeed 61803 Coated Single Bearings model-vr5 Rolf Prima Disc Carbon Tubular

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CeramicSpeed 61803 Coated Single Bearings model-vr5 Rolf Prima Disc Carbon TubularAll CeramicSpeed Bearings are hand built in Denmark. Super smooth CeramicSpeed grade 3 Silicon Nitride balls are matched (within microns) with hardened steel raceways that feature an ultra smooth polished groove. The balls are held in place by a reinforced polyamide cage. Every bearing is optimised with a low viscosity CeramicSpeed Blue Grease to minimise fiction and increase bearing life. Non contact seals complete the bearings, keeping dirt and