CONIC INERTIAL GRINDER Russian patent published in 2002 - IPC

FIELD: fine grinding equipment. SUBSTANCE: grinder has shell with outer cone and inner cone located inside outer cone on spherical support. Unbalancing vibrator mounted on inner cone shaft through bearing is pivotally hung to spherical support so as to define therewith receiver oil chamber for distributing oil to spherical support bearing and to unbalancing vibrator bearings. Oil supplying openings formed in inner cone and in its shaft are communicating receiver oil chamber with distributing chamber in lower part of cylindrical bearing of unbalancing vibrator. Housing of unbalancing vibrator is isolated from receiver oil chamber along inner cone shaft by sealing ring and is equipped with radial openings for discharge of used oil. Such construction allows reliable delivery of oil to unbalancing vibrator bearing as the most critical unit of grinder to be provided and damage thereof during heavy-duty modes of operation of grinder to be prevented. EFFECT: simplified construction and prolonged service life. 1 dwg