All measurements are in millimeters
Nylon/graphite retainer
52100 high carbon Chromium alloy races
ABEC 5 precision cartridge bearing
Races receive 3 cryogenic treatments and a rust proof Magnetite finish
"VV" type 2-lip non-contact Silicone labyrinth seals
CERBEC USA Grade 3 Si3n4 Silicon Nitride balls
Item Specifications
Material Ceramic
Bearing I.D. 15
Bearing O.D. 28
Manufacturer Number 6902
Thickness 7