The Kramp 21311K is a genuine spherical roller bearing designed for applications requiring rotation with low friction and tolerance for angular misalignment. This double-row bearing features a cylindrical bore and has confirmed dimensions of 55mm inner diameter, 120mm outer diameter, and 29mm width. Manufactured by FAG, it is constructed from standard bearing steel and operates efficiently within a temperature range of -30 °C to 120 °C. It provides a dynamic load rating (Cr) of 176 kN and a static load rating (Cor) of 176 kN, with limiting speeds of 3600 r/min when lubricated with grease and 4600 r/min with oil.