| 摘要 |
PROBLEM TO BE SOLVED: To provide a collect chuck or a guide bush excellent in abrasion resistance and slidability which does not scratch a work at a low price. SOLUTION: In the collect chuck or the guide bush, the collect chuck or the guide bush which does not scratch the work is provided on an internal periphery which retains or grips the work by using a nonmetal material excellent in abrasion resistance and slidability. The nonmetal material used here comprises any one kind or a plurality of kinds of a carbon fiber, a carbon fiber composite material, POM, PA, PTFE, PEEK, PPS or PI. COPYRIGHT: (C)2004,JPO
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