Model Number  QJF1956X3                          Original  
Number of Row Single                                   Type Angular Contact Ball Bearing 
Bore  d（mm）280                                         Outer   D（mm）375 
Width  B（mm）  65                                        Mass W（kg） 5.04
Overall Width  T（mm）                                 Chamfer（Rmin）  
rotate speed（r/min）