6805 Ceramic Bearing – Silicon Nitride Grade 3 balls
Hybrid Ceramic bearings are constructed using conventional hardened steel races, but the steel balls are replaced with ceramic balls.
Why are Ceramic bearings better?
- Ceramic balls are “rounder” than steel balls. That’s what makes them far more free rolling and much smoother running.
- Ceramic balls are about 50% lighter than steel balls. This is why spin-up times are much improved.
- Ceramic balls have a much lower degree of thermal expansion compared to steel balls. This results in cooler running and improved lubricant life.
- Ceramic balls are much harder than steel balls (over 100% harder). This, combined with their excellent surface finish is the reason they out-wear steel bearings. In identical running conditions, the balls in ceramic bearings exhibit less than 10% of the wear of steel balls.
The price indicated is for 1 Hybrid Ceramic bearing. This model 6805 ceramic bearing includes heat treated and hardened 52100 Alloy Bearing Steel races/rings and Si3N4 ceramic balls.
This high-quality hybrid ceramic bearing is sealed both sides (2RS) and is used as a bottom bracket bearing for all 24mm crank spindle solutions.
Example bottom bracket solutions include Shimano, FSA and SRAM