Model Number   GE 420-DW                         Original  
Number of Row Single                                   Type  Hoint Bearings
Bore  d（mm）    420                                     Outer   D（mm）  560
Width  B（mm）    190                                   Mass W（kg）  143
Overall Width  T（mm）                                 Chamfer（Rmin）  
rotate speed（r/min）