Model Number  BTM90A/P4CDB                   Original  
Number of Row Single                                    Type   Tapered Roller Bearing    
Bore  d（mm）  90                                          Outer   D（mm）   140  
Width  B（mm）  45                                         Mass W（kg）  2.3   
Overall Width  T（mm）                                  Chamfer（Rmin）     
rotate speed（r/min）