CM4SB Bearing Dubby Suitable For 4" Tile/ Wood / Steel Cutting machine in All Imported CM4SB Model
Brand : Generic
Suitable For : Dongcheng / DCA / DCK / Xtrapower / Powertex / All Imported CM4SB Model
Bearing Dubby is the part of the housing. It helps to hold the bearing with spindle. Incase it will not open then replace the dubby. It also called as bearing flange.
so please read the user manual to avoid that.