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.# }2 r. ?9 D9 U
Note: CS=80 3 ]8 h+ E& X" y4 ~" `* P9 S. _! S' g d7 [7 e9 Y8 ~* m
RPM 1/8=4 A' l5 c% u; X. Q9 i9 `
RPM 3/4=$ t+ P, j: n! _8 W
) {& a3 l9 U& y5 c% ~& }& |! U
Thanks a lot.
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发表于 2007-11-24 20:29
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