A seal and bearing assemble for washing machine gear bearing

The present device is applied to the washing machine comprising the following components: a barrel (10) which includes a floor (11) comprising a center hole (12); a transmission shaft (20) which comprises a top end part (21) arranged at the inner side of the barrel (10) and a lower end part (22) that protrudes downwards through a center hole (12); a roller bearing (30) which comprises an inner rail (31) that is jointed and is hold to the side surface of the transmission shaft (20) and an external rail (32) that is fixed to the structural support (S) of the bearing barrel (10); a holder (40) which is sealed and fixed to the floor (11) of the barrel (10) and can be operated to seal and connect the transmission shaft (20) in order to seal the center hole (12). According to the other side of the invention the inner orbit (31) of the roller bearing (30) is provided with a tubular extending part (33) at the top part which causes that the inner surface (33a) contact the side surface of the transmission shaft (20) to