SPINDLE OF DOWNHOLE HYDRAULIC MOTOR Russian patent published in 2003 - IPC

FIELD: drilling equipment, spindle-type turbodrills. SUBSTANCE: center support of spindle comes in the form of sector plain bearing, lower radial support is manufactured as plain bearing with friction pair "metal against metal " with antifriction bushing and main support installed in case comes in the form of universal bearings taking up radial and axial loads which have housing of cylindrical shape with outer and inner bearing races in which radial needle and thrust ball bearings are located. EFFECT: enhanced functional reliability and wear resistance of spindle. 2 cl, 4 dwg