Product Type
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          Gearhead 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Denominator of Reduction Ratio
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          7.5 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Synchronous Rotational Speed
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          187 rpm
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Designed Rotational Speed
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          9 rpm
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Speed
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          1 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Note
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          The designed rotational speed must be lower than the synchronous rotational speed by 2 to 15% 
                                                                                    
                                                                                                                                                     |