Resin molded rotor, canned motor, canned motor pump, fan scrubber, and vacuum pump apparatus

There is provided a resin molded rotor to improve the sealing properties of a motor rotor by simple configuration at low cost, a canned motor, a canned motor pump, a fan scrubber, and a vacuum pump apparatus. The resin molded rotor comprises: a rotor configured to hold a magnet; a main shaft provided with the rotor mounted thereto and configured to transmit power to outside; and a resin mold configured to integrally cover the rotor and part of the main shaft on both sides in an axial direction of the rotor, wherein an O-ring is placed between the resin mold and the main shaft to seal between the resin mold and the main shaft. 一种以简单且低成本的结构来提高电机转子的密封性的树脂模制转子、屏蔽电机、屏蔽电动泵、风扇洗涤器及真空泵装置。该树脂模制转子具备：转子，该转子保持磁铁；主轴，该主轴装配所述转子并向外部传递动力；树脂模制件，该树脂模制件一体地覆盖所述转子和所述转子的轴向两侧的所述主轴的一部分，在所述树脂模制件与所述主轴之间配置有O型圈，通过该O型圈，所述树脂模制件与所述主轴之间被密封。