D | 
                          210 mm | 
                            B | 
                          53 mm | 
                            Cr | 
                          440 rpm | 
                            Cor | 
                          680 rpm | 
                            Reference speed | 
                          1400 rpm | 
                            limit speed | 
                          1800 rpm | 
                            Type | 
                          圆柱滚子轴承 | 
