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.3 r& W9 {. U$ Y8 R* M3 n) s; j
Note: CS=80 9 l) |: f0 h6 o/ Z2 |; m" y7 v1 D& X
RPM 1/8=% a1 j& F( \) J$ T7 V, x* f
RPM 3/4= 8 P/ b( z) D; V' @- |) D2 g9 @* _* d7 `# ]6 E1 c W
Thanks a lot.
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发表于 2007-11-24 20:29
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