METHOD OF MAKING BEARING RACES Russian patent published in 1997 - IPC

FIELD: machine engineering, namely bearing manufacture. SUBSTANCE: method comprises steps of making track on strip, forming open ring by bending strip and cutting measured length piece from it. Chamfers are preliminarily made on strip; ends of ring-shaped semifinished product are joined by welding. Then welding fin is removed, rolling track is corrected and ring is worked along perimeter of basic allowances. Open ring may be made at cutting off measured length piece from strip and bending it by radius or at bending strip to coiled helix and subsequently cutting measured length piece from it. EFFECT: enhanced efficiency. 9 cl, 5 dwg