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. ' F+ c4 W* Y9 f3 s" {9 G8 F6 uNote: CS=80 9 V% g- r1 w- f5 A5 H: j$ k* w& ?* s
RPM 1/8= / W. t9 h8 z+ t& {0 N. S/ K t/ r7 e( GRPM 3/4= 7 Z$ k! O5 x v$ B$ ~2 T S7 k0 F8 ^; }# C% i: o8 r. b, Y" R, u- l
Thanks a lot.
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发表于 2007-11-24 20:29
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