| 摘要 |
A crank lever for loom linkages, comprising a body (12) of high-strength aluminium plate with a central hole (13), and a central annular rotation and thrust-bearing hub (14) of steel surface-hardened by heat treatment and inserted into said hole and locked therein by simple compressive plastic deformation of its outer annular edge, which comprises a restriction in its cross-section thereat. <IMAGE> |
