Magnetically engaged pump

A magnetically engaged pump comprising

• a pump housing including a shaft in the housing;
• a magnetic coupling in the pump housing including a rotatable magnetic drive, a rotatable driven magnet assembly inwardly of the rotatable magnetic drive and a cylindrical canister extending between the rotatable magnetic drive and the rotatable driven magnet assembly, the rotatable driven magnet assembly having a concentric cavity;
• a pump rotor engaged with the rotatable driven magnet assembly and including an axial passage;
• a carrier including a bore rotatably disposed about the shaft, at least one plain bushing in the bore bearing on the shaft, and a radial attachment flange engageable to rotate with the rotatable driven magnet assembly, the carrier being within the concentric cavity and fitting through the axial passage for removal from the pump with the pump rotor engaged with the rotatable driven magnet assembly and the rotatable driven magnet assembly magnetically engaged with the rotatable magnetic drive.