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.; G" n2 f) X) @0 d
Note: CS=80 O% H" D' j# Z. }
1 k4 N) e4 e+ m( j4 E; o* ?
RPM 1/8=) {& K4 h" }( D- H
RPM 3/4=3 o" o3 s' d. p8 e6 E6 X
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发表于 2007-11-24 20:29
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