Double-row self-aligning ball bearing without seal: Also known as: 1305K/C3, Weight and Dimensions: Inner (d) MM: , Outer (D) : , Width (B) MM: , Weight: 0,252, Product Properties: Bore: K – 1:12 Tapered Bore (Standard for Most Types), Seal: No Seal, Cage Typ: S – Steel or Standard Cage, Radial Internal Play: C3 Internal Play (Higher than Cn), Precision: Standard Precision, Lubrication: Standard Lubrication, Heat Stabilization: No Heat Stabilization – Temperatures up to 120 °C, Suffix description, K: Tapered Bore, Taper 1:12, J30: Internal Clearance Larger Than Normal