| 摘要 |
PROBLEM TO BE SOLVED: To set a drilling device compact and to provide extremely short structure form in the axial direction in the drilling device constituted of a drill chuck and for example, a spindle easing having a drilling spindle for a hand drill machine. SOLUTION: A jaw shaft 5 forming a chuck jaw 4 for a drill chuck is projected rearward from a self guide receiving part 6 into a ring space 15 in a spindle casing 1. The ring space surrounds a spindle bearing 12 in the front side of the drilling spindle 2 in the axial direction. As a result, the spindle bearing 12 is positioned in the jaw part 5 projected into the ring space 15. |
