A magnetic pump is used to pump specially corrosive agents, having simplified components made of hard ceramic,preferably silicon carbide,which form ceramic-on-ceramic axial and radial bearing surfaces.The pump has an impeller and magnetic rotor, each being mounted on an opposite end of a ceramic shaft by a respective silicon carbide bush. The shaft rides in silicon carbide first and second plain bearing bushes, each of which forms a radial bearing surface and an axial bearing journal end face.The ceramic/sic impeller bush is secured to the shaft by a form fit and provides an axial bearing surface against the first bearing bush end face. Similarly, the ceramic/sic rotor bush is secured to the shaft by a form fit and forms an axial bearing surface against the end face of the second plain bush.