Self-aligning ball bearing 1228 (1228K) Dimensions and Calculation data d140mm D250mm B50mm B154mm rs (min)3mm 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 DynamicC r164kN StaticC or74,2kN Fatique load limitPu3,4kN Corresponding Adapter Sleeve-- Bearing weight1228K10,6kg Bearing weight122810,9kg Reference Speed3900r/min Limiting Speed3650r/min