Model Number    SL12922A                          Original  
Number of Row Four                                      Type    Tapered Roller Bearing   
Bore  d（mm）110                                         Outer   D（mm）150     
Width  B（mm）  78                                        Mass W（kg）  4.2   
Overall Width  T（mm）                                 Chamfer（Rmin）     
rotate speed（r/min）