12x21x5 Ceramic Rubber
- 12mm Inside diameter
- 21mm Outside diameter
- 5mm wide
- mr6801 mr 6801 2rs 12x21
- Abec 5
- Light oil
- Ceramic Silicon Nitride Si3N4 balls
- Chrome steel races
- Nylon retainers*
- Rubber seals
Ceramic Hybrid
Ceramic Hybrids last up to 10xs longer than Chrome Steel bearings. These are used in applications where high speed, load and temperature are a factor. Ceramic balls are harder and rounder than stainless & chrome steel, so therefore they offer less rolling resistance.
*Nylon retainers handle up to 60% more speed than a standard steel retainer