1 6

Raindew Official Store

10PCS 6704RS CB 20x27x4mm Hybrid Ceramic Si3N4 Ball Bearing Bicycle Bottom Brackets & Spares Rear wheel 6704 2RS Bearings

10PCS 6704RS CB 20x27x4mm Hybrid Ceramic Si3N4 Ball Bearing Bicycle Bottom Brackets & Spares Rear wheel 6704 2RS Bearings

$46.43 USD
$0.00 USD $46.43 USD
할인 품절

 

Specifications:
Item: 6704RS CB
Structure: Deep Groove
Material: Bearing Steel Hybrid Ceramic Si3N4
Bore Dia (d): 20 mm
Outer Dia (D): 27 mm
Width (B): 4 mm
Closures: Metal Seal
Magnetic: little
Hardness: 58HRC
Corrosion Resistance: General
Clearance: C0
Grades: ABEC-7
 
Features:
 
Engineered for racers and enthusiasts who refuse to let friction steal watts, our Hybrid Ceramic Bearings redefine efficiency. With dual-lip rubber seals (2RS) and aerospace-grade Silicon Nitride (Si₃N₄), they turn every pedal stroke into pure, silent motion – from rain-lashed descents to blistering sprints.
 
Why Champions Trust Hybrid Ceramic:
✅ Si₃N₄ Ceramic Balls
Ultra-lightweight (70% less mass than steel), fracture-resistant, and impervious to corrosion. Slash rotational inertia for explosive acceleration and heat-defying endurance in extreme conditions.
✅ 2RS All-Terrain Armor
Twin elastomer seals form an airtight shield against mud, sand, and saltwater – preserving lubrication integrity mile after grueling mile.
✅ Race-Grade Steel Races
Mirror-polished high-carbon races create a frictionless runway for ceramic balls, delivering 90% of full-ceramic performance without the premium price.
 
Ride Transformed:
⚡️ Instant Power Delivery – Feel watts translate directly to speed with near-zero drag.
🛡️ 3X Extended Service Life – Eliminate pitting and corrosion failures, even in monsoons or desert dust.
💧 All-Condition Reliability – Conquer puddles, slush, or gravel without hesitation.
🔄 Silent Precision – Silence chainring chatter and hub whine for distraction-free riding.
⚖️ Agile Responsiveness – Shed critical rotational weight for quicker handling and sprints.
 
Critical Applications:
Bottom Brackets: Eradicate pedal drag and creaks – experience seamless power transfer from crank to chain.
Rear Hubs: Sustain momentum effortlessly, reducing leg fatigue on century rides and crits.
Also Perfect For: Headsets, freehubs, and suspension linkages demanding flawless rotation.

 

 

전체 세부 정보 보기