Shaft mounting for cement mixer or the like

A mounting for a horizontal shaft driving a stirrer of flowable material in a mixing chamber, such as a cantilevered arm in a cement-mixing drum, comprises a housing divided into two axially spaced compartments, i.e. a first compartment close to an apertured chamber wall traversed by the shaft and a second compartment remote therefrom. The first compartment contains a packing assembly on a supporting sleeve which fits closely onto the shaft for rotation therewith, this assembly including a rotatable section extending into the wall aperture and a nonrotatable section with interposed sealing in contact with each other; the second compartment contains a journal bearing for the free end of the shaft. The rotatable section is sandwiched between a flange of the sleeve and the nonrotatable section, the latter being axially slidable in a cylindrical housing portion but being held at a fixed axial distance from the rotatable section by a thrust bearing which rests against a shoulder on the sleeve.