Ball bearings 6321 (RS, 2RS, Z, 2Z) Dimensions and Calculation data d105mm D225mm B49mm rs3mm Do you have a question or need help? If you would like one of our specialists to contact you for clarification, please click here. Contacts Rated dynamic load capacityC r185kN Rated static load capacityC or153kN Fatigue strength limitPu5,41kN Bearing weight8kg Nominal speed6300r/min The maximum frequency of rotation4000r/min