• 719USO30 .A21.0/0.M | 719USO30.A21.0/0.M• Inner dimension: 30, Outer dimension: 47, Width: 18, Weight: 0,09, Lubrication hole: Without lubrication groove, Cage: Hard tissue cage, Seal: None, open bearing, Arrangement: Single universal bearing, Lubrication: Preserved, Ball rows: Double row bearing, Preload: Medium preload, Contact angle: 21 degree, 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, Material of rolling elements: Standard bearing steel, Temperature range: -40 to +110 °C