Model Number    NJ422                          Original   42422
Number of Row Single                            Type    Cylindrical Roller Bearing   
Bore  d（mm） 110                                 Outer   D（mm）    280 
Width  B（mm）    65                               Mass W（kg）   23.8  
Overall Width  T（mm）                          Chamfer（Rmin）     
rotate speed（r/min）