d1
                           | 
                          
                            257.6
                           | 
                          
                            
                             Maximum flange diameter of inner ring
                            
                           | 
                        
                          
                            rmin
                           | 
                          
                            4
                           | 
                          
                            
                             Minimum chamfer size
                            
                           | 
                        
                          
                            D1min
                           | 
                          
                            311.5
                           | 
                          
                            
                             Minimum shoulder diameter of outer ring
                            
                           | 
                        
                          
                            r1min
                           | 
                          
                            4
                           | 
                          
                            
                             Minimum chamfer size
                            
                           | 
                        
                          
                            damin
                           | 
                          
                            217
                           | 
                          
                            
                             Minimum diameter of shaft shoulder
                            
                           | 
                        
                          
                            E
                           | 
                          
                            323
                           | 
                          
                            
                             Outer race diameter
                            
                           | 
                        
                          
                            dcmin
                           | 
                          
                             261
                           | 
                          
                            
                             Minimum shaft shoulder
                            
                           | 
                        
                          
                            F
                           | 
                          
                            243
                           | 
                          
                            
                             Inner race diameter
                            
                           | 
                        
                          
                            Damax
                           | 
                          
                            343
                           | 
                          
                            
                             Maximum diameter of bearing block shoulder
                            
                           | 
                        
                          
                            B3
                           | 
                          
                            9
                           | 
                          
                            
                             Loose edge width
                            
                           | 
                        
                          
                            ramax
                           | 
                          
                            3
                           | 
                          
                            
                               Maximum cavity radius
                            
                           |