1.Product Introduction: The model of self-aligning ball bearings (1210K), with an inner diameter of 50mm. The "K" indicates a tapered hole (with a taper of 1:12), suitable for tight-fitting shaft systems to prevent loosening. 2.Structure Type: Inner ring (with tapered hole 1:12) + outer ring (with spherical raceway) + single-row steel balls + engineering plastic cage, featuring an open design (which can be equipped with oil seals). 3.Size Range: Inner diameter: 50mm (tapered hole 1:12), outer diameter: 90mm, width: 20mm. 4.Material: Inner ring / outer ring: GCr15, rolling elements (steel balls): GCr15, cage: engineering plastic. 5.Accuracy: Conventional P0 grade, heavy-duty precision models are of P6 grade. 6.Application Fields: Heavy-duty motors (7.5kW), mining machinery (small crushers), auxiliary shafts of machine tools (with tight-fitting requirements), conveyors. 7.Key Inspection Items: Taper accuracy of the tapered hole (1:12 ± 0.001), conformity of the inner ring fitting with the shaft, radial load-bearing capacity (≥ 30kN).