• 311 NR | 311NR• Inner dimension: 55, Outer dimension: 120, Width: 29, Weight: 1,5, EAN: 7316576680519, Material: Standard bearing steel, Outer ring: Ring groove with circlip on outer ring, Seal: None, open bearing, Clearance: Normal radial clearance, Current insulation: No current insulation, Bore: Cylindrical bore, Ball rows: Single row bearing, Temperature range: -20 to +120 °C, Tolerance class: Tolerance class P0/PN2 / ABEC 1, Material of rolling elements: Standard bearing steel, Cage: Sheet steel