Precision Cylindrical Roller Bearings (tapered bore,taper 1:12) Model : NN3010K SP W33 Id (inner diameter)/Bore : 50 mm OD (outer diameter) : 80 mm Width/Height/Thickness : 23 mm Quantity : One Bearing (1 pcs) Equal: NN3010K Precision Cylindrical roller bearings, double row, high-precision The bearings comprise solid outer rings without ribs, solid inner rings with three ribs and cylindrical roller and cage assemblies with solid brass cages. For optimum setting of the radial internal clearance, the inner ring has a tapered bore with a bore taper 1:12. The cylindrical roller bearings are separable and are therefore easier to fit and dismantle. Both bearing rings can be given a tight fit by this process. SP: Dimensional accuracy in accordance with ISO tolerance class 5, running accuracy in accordance with ISO tolerance class 4