D | 
                          52 mm | 
                            B | 
                          15 mm | 
                            Cr | 
                          14.8 rpm | 
                            Cor | 
                          7.8 rpm | 
                            Reference speed | 
                          38000 rpm | 
                            limit speed | 
                          22000 rpm | 
                            Type | 
                          深沟球轴承 | 
