Hollow cylinder-like rotatable hub part for wheel of lorry, has bulge with concavities, where front side of part axially projects opposite to front side areas between openings in sub areas around openings of bulge and/or concavities

摘要

The part (5) has a flange-like bulge (10) provided at one of front sides. The bulge has multiple axial intersections that are arranged distributedly in a circumferential direction and/or axially extending concavities in the front side. The front side axially projects opposite to front side areas between openings in sub areas around openings of the bulge and/or the concavities. The hub part is formed in a material-uniform manner as a forging part made of steel. A circular cylinder shell is defined at radially projecting outer casing areas (16) of the bulge.