Inner dimension 50 mmOuter dimension 80 mmWidth 16 mmWeight 0,25 kgLubrication hole Without lubrication groove Lubrication Preserved Arrangement Single universal bearing Material Standard bearing steel Tolerance class inner ring More accurate than P2 or ABEC 9 Tolerance class outer ring More accurate than P2 or ABEC 9 Cage Hard tissue cage Seal None, open bearing Contact angle 21 degree Temperature range -40 to +110 °C Ball rows Single row bearing Material of rolling elements Standard bearing steel Preload High preload |