| 摘要 |
An expandable arbor for supporting abrasive coated sleeves. The arbor has an exterior slotted shell which is expanded by expander elements located in the shell and supported on an axially extending shaft. The expander elements have outwardly movable fingers formed around the peripheries thereof and which engage the shell to expand the shell into contact with the abrasive coated sleeves. The fingers are expanded by threaded members having inclined conical head surfaces which engage complementary surfaces of the expander element fingers. Aligned passages are provided in the expander elements and the supports to permit access to the expander elements from the ends of the shell.
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