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.. L" e2 \2 O- u" B8 S1 N! j" G
Note: CS=80* B' z/ d" s( Q
/ k' [# H; r) ~. K' H
RPM 1/8= & c* z/ C* o% |% R+ D+ JRPM 3/4=' @" M# U# M5 T- \
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发表于 2007-11-24 20:29
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