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. ; ~8 W( p2 r9 y9 {4 u. B5 MNote: CS=80* m. {4 u/ Q( ?# h0 ]$ N2 x! h c
8 k' q3 U9 ^2 K# x$ M. R- N* f
RPM 1/8= # s ]% ^5 P7 X, H3 |" ^9 vRPM 3/4=0 P; Q' t: u! J2 M+ [ _
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发表于 2007-11-24 20:29
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