Roller skate wheel assembly

A skate wheel assembly comprising:

• a) an annular-shaped bearing frame including a tire rim, a bearing seat defining a central passage therethrough for receiving a bearing and wheel shaft assembly, a bridge portion connecting the tire rim and bearing seat, a chamber between the tire rim and the bearing seat, and a hole in the tire rim for connecting the chamber with an outside of the tire rim;
• b) an inflatable tire tube mounted on the tire rim;
• and
• c) a cover layer molded around at least portions of the tire tube and bearing frame for securing the tire tube to the tire rim and forming an integrated wheel assembly therewith, wherein a material of the cover layer extends through the hole and fills the chamber to further integrate the bearing seat, tire rim and tire tube.