• 719USSC20 .A21.I/1.DB.M | 719USSC20.A21.I/1.DB.M• Inner dimension: 20, Outer dimension: 37, Width: 9, Weight: 0,03, Material of rolling elements: Si3N4, silicon nitride (ceramics), Ball rows: Two single row bearings, Preload: Medium preload, Material: Standard bearing steel, Current insulation: Insulating ceramic balls, Lubrication: Preserved, Tolerance class inner ring: More accurate than P4 or ABEC 7, Tolerance class outer ring: More accurate than P5 or ABEC 5, Temperature range: -40 to +110 °C, Seal: None, open bearing, Cage: Hard tissue cage, Arrangement: Set of two bearings in O-arrangement , Contact angle: 21 degree, Lubrication hole: Without lubrication groove