A 1/8 inch pilot hole followed by a 3/4 inch dia hole to be drilled in end of a 3.875 inch dia shaft.Calculate the RPM of each drill. ) Z, |6 U8 Z& q3 c! }Note: CS=80 & s! r# ^% B! k& y2 h% b! Z7 n" b4 `% F8 C* k
RPM 1/8= q; { [- w3 G/ f
RPM 3/4=% a' r2 S) H; A
* D; w: y# O: Y- D6 v& l
Thanks a lot.
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发表于 2007-11-24 20:29
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