PROCESS OF MANUFACTURE OF RACES OF DOUBLE-ROW ROLLING BEARINGS Russian patent published in 1997 - IPC

FIELD: manufacture of rolling bearings. SUBSTANCE: race profile billets are prepared in advance by turning with removal of cuts of semifinished items with profile of cross-section close to inverse image of profile of cross-section of finished race. Then finished races are produced by rolling in rolls with profile of groove identical to profile of cross-section of finished race. Race profile billets are produced with two radial protrusions with outer and inner volumes correspondingly 75.0-78.5% and 17.5-20.5% of volume of inner protrusions of finished outer race. EFFECT: enhanced production efficiency. 3 dwg, 1 tbl