SPINDLE-SECTION OF DEFLECTING TURBODRILL Russian patent published in 1997 - IPC

FIELD: mining industry; well drilling by turbodrills. SUBSTANCE: spindle section includes hollow body accommodating hollow shaft connected with motor shaft by means of articulated coupling, radial and axial bearings and shaft seal. Shaft is installed in radial bearings with clearance, whose size in proportion to distance from articulated coupling to respective radial bearing. Internal surface of radial bearings is conical with small base of cone directed towards articulated coupling. Shaft seal is located between articulated coupling and radial bearing with minimal radial clearance. EFFECT: higher efficiency. 1 dwg