Inner dimension 30 mmOuter dimension 55 mmWidth 26 mmWeight 0,22 kgLubrication hole Without lubrication groove Arrangement Single universal bearing Lubrication Preserved Ball rows Double row 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 Material of rolling elements Standard bearing steel Preload High preload |