Model Number  NUP6/660.4                    Original   929/660.4 
Number of Row Single                              Type 
Bore  d（mm）  660.4                               Outer   D（mm）863.6 
Width  B（mm）   107.95                          Mass W（kg）  178
Overall Width  T（mm）                            Chamfer（Rmin）  
rotate speed（r/min）