CONE BIT SUPPORT Russian patent published in 2012 - IPC E21B10/22 

FIELD: mining.

SUBSTANCE: cone bit support comprises a stepped journal and a cutter installed on a journal by means of a retaining bearing and a sliding bearing in the form of a bushing with rolling bodies. A journal of larger diameter is made with a circular bore for a bushing tail, which is installed with the possibility of axial displacement, is fixed on a journal against slippage and is made at the side of a support part with longitudinal slots for rolling bodies installed in the bushing slots as capable of slippage and aflush with its external surface.

EFFECT: simplified design and increased service life.

4 cl, 2 dwg