Brand SKF Item Number 6304-2Z/C3 SKF EAN 7316570385359 Category Deep Groove Ball Bearings Single Row Weight and Dimensions Inner (d) MM 20 Outer (D) MM 52 Width (B) MM 15 Inner (d) Inch 0.7874 Outer (D) Inch 2.0472 Width (B) Inch 0.5906 Weight (kg) 0.144 Product Properties Bore C - Cylindrical Bore Seal ZZ/2Z - Steel Seal on Two Sides Cage Type S - Steel or Standard Cage External Modification No External Modification 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 Special Treatment No Special Treatment Suffix description 2Z Shield Of Pressed Sheet Steel On Both Sides Of The Bearing C3 Internal Clearance Larger Than Normal