{"product_id":"cema-6902-hybrid-keramisk-hjulleje-15x28x7mm-copy","title":"CEMA 6903 Hybrid Keramisk Hjulleje - 17x30x7mm","description":"\u003ch2\u003eCEMA 6903 Hybrid Ceramic Wheel Bearing - 17x30x7mm at a Glance\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eConstructed with ultra-hard Silicon Nitride (Si3N4) ceramic balls.\u003c\/li\u003e\u003cli\u003eBearing races made of 52100 Chrome Steel for optimal strength.\u003c\/li\u003e\u003cli\u003eABEC 5 precision rating ensures minimal tolerance and maximum efficiency.\u003c\/li\u003e\u003cli\u003eDouble LLB seal (Labyrinth) for high protection against dirt and water.\u003c\/li\u003e\u003cli\u003eStandard dimensions of 17x30x7mm, ideal for wheel hubs and bottom brackets.\u003c\/li\u003e\u003cli\u003eFactory lubricated with water-resistant grease for extended lifespan.\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eWhen we talk about performance optimization on the road or in the woods, it is often the smallest components that deliver the biggest gains. The CEMA 6903 Hybrid Ceramic Wheel Bearing - 17x30x7mm is created for cyclists who refuse to compromise on their equipment. By combining the best properties of steel and ceramics, you get a bearing that rolls smoother, lasts longer, and resists the extreme demands that modern cycling places on hardware.\u003c\/p\u003e\u003ch2\u003eTarget Audience for this High-Performance Bearing\u003c\/h2\u003e\u003cp\u003eThe CEMA 6903 Hybrid Ceramic Wheel Bearing - 17x30x7mm is aimed at the serious cyclist, whether you ride road, mountain bike, or triathlon. It is the perfect choice for the recreational rider seeking a noticeable upgrade to their wheelset, or the elite rider chasing those final marginal gains in the race against the clock. If you are a mechanic or enthusiast who builds and maintains your own bike, you will appreciate the superior build quality and precise tolerances this bearing offers. It is an investment in speed and reliability for anyone who takes their sport seriously.\u003c\/p\u003e\u003ch2\u003eApplications for the CEMA 6903 in Your Bike\u003c\/h2\u003e\u003cp\u003eThis specific bearing has a wide range of applications thanks to its standardized dimensions. The CEMA 6903 Hybrid Ceramic Wheel Bearing - 17x30x7mm is primarily used in wheel hubs, where it is compatible with popular brands like Mavic and SRAM. However, its robustness also makes it suitable for use in certain bottom brackets and even in chain tensioner pulleys, where precision is crucial.\u003c\/p\u003e\u003ch3\u003eOptimizing Wheel Hubs and Power Transfer\u003c\/h3\u003e\u003cp\u003eBy installing the CEMA 6903 Hybrid Ceramic Wheel Bearing - 17x30x7mm in your wheels, you achieve a significantly reduced rolling resistance. This means less energy is lost to friction every time the wheel turns. In a sport where every watt counts, ceramic bearings provide a technical advantage that can be felt immediately when you push the pedals.\u003c\/p\u003e\u003ch2\u003eCreating Value with Ceramic Technology\u003c\/h2\u003e\u003cp\u003eWhy choose the CEMA 6903 Hybrid Ceramic Wheel Bearing - 17x30x7mm over a standard steel bearing? The answer lies in the materials. Silicon Nitride ceramic balls are significantly harder and rounder than steel balls. This results in less heat buildup during riding and a substantially longer lifespan for the entire bearing construction. Thanks to the LLB seal, which is a double labyrinth seal, dust and moisture are kept out without significantly increasing friction. With the CEMA 6903 Hybrid Ceramic Wheel Bearing - 17x30x7mm, you get a product that requires less maintenance and delivers constant performance over time.\u003c\/p\u003e\u003ch2\u003eSpecifications for CEMA 6903 Hybrid Ceramic Wheel Bearing - 17x30x7mm\u003c\/h2\u003e\u003cp\u003eBelow you will find the technical details that make this bearing a favorite among professional mechanics:\u003c\/p\u003e\u003cul\u003e\u003cli\u003eInner diameter: 17 mm.\u003c\/li\u003e\u003cli\u003eOuter diameter: 30 mm.\u003c\/li\u003e\u003cli\u003eWidth\/Thickness: 7 mm.\u003c\/li\u003e\u003cli\u003eBall material: Silicon Nitride (Si3N4) Grade 5.\u003c\/li\u003e\u003cli\u003eRace material: 52100 Hardened Chrome Steel.\u003c\/li\u003e\u003cli\u003ePrecision class: ABEC 5.\u003c\/li\u003e\u003cli\u003eSealing solution: LLB double-lip labyrinth seal.\u003c\/li\u003e\u003cli\u003eWeight: 12 grams (net).\u003c\/li\u003e\u003cli\u003eFinish: Silver and black design.\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eGet your bike ready for new challenges and experience the difference with a true performance upgrade. By choosing the CEMA 6903 Hybrid Ceramic Wheel Bearing - 17x30x7mm, you ensure the ultimate combination of speed, durability, and technical edge on the road.\u003c\/p\u003e","brand":"Cema","offers":[{"title":"Default Title","offer_id":53685612151120,"sku":"SRC-5S-6903LLB","price":32.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/9106\/8622\/files\/cema-rato-guolis-608-8x22x7-mm-keramika-1200x1200.webp?v=1790162796","url":"https:\/\/transition-zone.com\/en-in\/products\/cema-6902-hybrid-keramisk-hjulleje-15x28x7mm-copy","provider":"Transition Zone","version":"1.0","type":"link"}