Abstract: Apparatus for mounting an open end spinning turbine positioned adjacent the front end of a drive shaft includes a bearing block which has a pair of spaced walls traversed by the drive shaft. Rollers are provided between the spaced walls forming a V-groove support for the drive shaft. The rear end of the shaft extends outwardly of the rear wall of the bearing block and has an annular T-slot formed therein. A bushing is mounted in the wall for journalling of the shaft, and a guide member extends within the T-slot for establishing the axial location of the shaft within the supporting rollers.