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. & i8 L* d9 l$ Q2 D6 |4 v# DNote: CS=80 4 [8 U' X( Y& X- M8 r! k0 ~$ w
RPM 1/8=4 D4 x+ @% S; v) V4 z$ j
RPM 3/4= . i1 q5 `" v& |% p5 b2 t8 F+ o, x- s
Thanks a lot.
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发表于 2007-11-24 20:29
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