D | 
                          40 mm | 
                            B | 
                          12 mm | 
                            Cr | 
                          9.95 rpm | 
                            Cor | 
                          4.75 rpm | 
                            Reference speed | 
                          53000 rpm | 
                            limit speed | 
                          28000 rpm | 
                            Type | 
                          深沟球轴承 | 
