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5PCS 6808RS CB 40x52x7mm Hybrid Ceramic Si3N4 Ball Bearing Bicycle Bottom Brackets & Spares Rear wheel 6808 2RS Bearings
5PCS 6808RS CB 40x52x7mm Hybrid Ceramic Si3N4 Ball Bearing Bicycle Bottom Brackets & Spares Rear wheel 6808 2RS Bearings
Normaler Preis
$46.43 USD
Normaler Preis
$0.00 USD
Verkaufspreis
$46.43 USD
Grundpreis
pro
Verfügbarkeit für Abholungen konnte nicht geladen werden
Specifications:
Item: 6808RS CB
Structure: Deep Groove
Material: Bearing Steel Hybrid Ceramic Si3N4
Bore Dia (d): 40 mm
Outer Dia (D): 52 mm
Width (B): 7 mm
Closures: Metal Seal
Magnetic: little
Hardness: 58HRC
Corrosion Resistance: General
Clearance: C0
Grades: ABEC-7
Features:
Optimize your bike's rotating parts with direct-fit hybrid bearings. This set pairs precision-machined, high-carbon chromium steel (GCr15) races with silicon nitride (Si₃N₄) ceramic balls. This hybrid construction balances the impact resistance of steel with the hardness and smoothness of advanced ceramics. Built to ABEC-9 tolerances and protected by high-performance, double-contact rubber seals, they maximize power transfer and durability where it matters most.
✅ Unlock Direct Power Transfer at the Bottom Bracket
Precision-fitted into your bottom bracket, these bearings minimize rotational friction at the crankset's core. The ultra-smooth Si₃N₄ ceramic balls reduce energy-wasting micro-vibrations for a more responsive, connected pedal feel. The result is noticeably crisper power delivery during sprints and climbs, while the robust steel races ensure reliable shock absorption from road impacts.
✅ Achieve Effortless Wheel Rotation for Sustained Momentum
Installed in hubs, these bearings promote flawlessly aligned rotation with minimal rolling resistance. The lightweight ceramic balls reduce rotational inertia, enabling smoother acceleration and better speed retention. Combined with effective dual-lip seals, they protect against contamination, preserving efficiency on wet roads or gravel. This translates to a freer-spinning wheel and cleaner power transfer to the road.
✅ Engineered for All-Weather Reliability
The high-performance seals actively repel water, mud, road salt, and grit—critical for longevity where standard bearings fail. The corrosion-resistant steel races and rust-proof ceramic balls maintain consistent performance in rain, snow, or dust. This design prioritizes real-world sealing integrity over theoretical speed gains, ensuring durability in harsh conditions.
✅ Long-Term Value Through Intelligent Design
Pre-filled with bicycle-specific grease and built to exacting tolerances, these bearings resist wear, micro-pitting, and contamination better than steel-only alternatives. While not maintenance-free, the hybrid design extends service intervals significantly, especially in wet environments. It represents a practical investment in lasting performance and reduced long-term upkeep.
Choose this hybrid ceramic bearing set for tangible refinement: a crisper pedal stroke, quieter and smoother wheels, and unwavering reliability through all conditions. When professionally installed and maintained, it elevates your bicycle's foundational performance through intelligent engineering, proving that true value lies in lasting quality and enhanced ride quality for every mile ahead.
