Cycling Ceramic Wheel Bearing 6903 - Silver

This ceramic ball bearing from CyclingCeramic is designed for high-quality cycling applications where smooth, precise, and durable performance is essential. The bearing features Grade 3 silicon nitride (Si3N4) balls, combined with hardened steel races. The ceramic balls are finely tuned to the races, contributing to low rolling resistance and smooth operation. The 6903 bearing, also known as 61903, measures 17 x 30 x 7 mm and is sold separately.

- High-quality ceramic ball bearing from CyclingCeramic
- Equipped with Grade 3 silicon nitride (Si3N4) ceramic balls
- Ceramic balls are precisely matched to the hardened steel races
- Polished raceway for smooth and precise operation
- Contactless seals help protect the bearing from dirt and moisture
- Suitable for various cycling applications, including road bikes, gravel, time trials, triathlons, track cycling, cyclocross, and mountain biking

Specifications:
Brand: CyclingCeramic
Type: Ceramic deep groove ball bearing
Dimensions: 17 x 30 x 7 mm
Inner diameter: 17 mm
Outer diameter: 30 mm
Width: 7 mm
Material: Steel bearing rings with ceramic balls
Ceramic balls: Grade 3 silicon nitride (Si3N4)
Color: Silver
Weight: approximately 13.8 grams