12x21x5 Ceramic Rubber

Regular price $4.99

 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