{"product_id":"ceramicspeed-coated-single-bearing-61903-18-6903-18-for-cycling-performance","title":"CeramicSpeed Coated Single Bearing 61903\/18 (6903\/18) for Cycling Performance","description":"\u003cp\u003eExperience the pinnacle of precision with the CeramicSpeed Single Bearing Coated 61903\/18 (6903\/18), meticulously hand-built in Denmark to ensure unmatched quality and performance. Featuring CeramicSpeed grade 3 Silicon Nitride balls, these bearings offer an ultra-smooth ride thanks to their perfectly matched, hardened steel raceways with polished grooves. The reinforced polyamide cage keeps the balls securely in place, while the application of low viscosity CeramicSpeed “Blue Grease” minimizes friction and significantly extends bearing life.\u003c\/p\u003e\n\n\u003cp\u003eDesigned with non-contact seals, these bearings effectively keep dirt and moisture at bay, ensuring durability across various cycling disciplines including Road, TT, Triathlon, Track, Cross, and MTB. The advanced materials used in the CeramicSpeed balls make them 400% smoother, 128% harder, and 58% lighter than conventional steel bearings, providing superior power transfer and a noticeable reduction in resistance. Every bearing undergoes four meticulous quality checks during assembly to guarantee perfect matching and peak performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTech Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInner Diameter: 18 mm\u003c\/li\u003e\n  \u003cli\u003eOuter Diameter: 30 mm\u003c\/li\u003e\n  \u003cli\u003eWidth: 7 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMaximizing power transfer with ultra-low friction bearings\u003c\/li\u003e\n  \u003cli\u003eEnhancing bearing longevity through premium-grade materials and lubrication\u003c\/li\u003e\n  \u003cli\u003eMaintaining performance across diverse cycling disciplines\u003c\/li\u003e\n  \u003cli\u003eResisting dirt and moisture with non-contact seals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It’s NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse in applications outside of cycling components\u003c\/li\u003e\n  \u003cli\u003eEnvironments with extreme contamination beyond seal protection\u003c\/li\u003e\n  \u003cli\u003eSituations requiring larger or differently sized bearings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAre these bearings compatible with all bike types?\u003c\/strong\u003e\u003cbr\u003eThe CeramicSpeed Single Bearing Coated 61903\/18 is compatible with a wide range of cycling disciplines, including Road, TT, Triathlon, Track, Cross, and MTB bikes, making it versatile for various setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the coating improve bearing performance?\u003c\/strong\u003e\u003cbr\u003eThe coating, combined with the high-grade Silicon Nitride balls and CeramicSpeed’s Blue Grease, dramatically reduces friction, increases durability, and improves overall bearing efficiency for smoother rides and longer service life.\u003c\/p\u003e","brand":"CeramicSpeed","offers":[{"title":"Default Title","offer_id":45499481456815,"sku":"101273","price":124.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/1636559549-55887300.jpg?v=1768523630","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/ceramicspeed-coated-single-bearing-61903-18-6903-18-for-cycling-performance","provider":"Swinnerton Cycles","version":"1.0","type":"link"}