| 摘要 |
<p>The present invention relates to a hydraulic chuck for rear end turning machining of a hydraulic cylinder for an excavator. When a wedge plunger (30) is elevated by a main shaft (20) rising in association with a hydraulic cylinder, a master jaw (40) moves to a certain distance in the radial direction of a chuck housing (10) by the wedge plunger (30) and a jaw (60) installed in an upper portion of the chuck housing (10) moves to a certain distance in a radial direction.</p> |
