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.( e9 d4 K, E f/ S. k$ U
Note: CS=80# O& S1 `* b8 c: v. \$ O
* U! R6 O. ~2 D. Z0 r) ARPM 1/8= N- B$ Y8 n, l4 n% w7 i
RPM 3/4= ; N; j; j& R( `; ~! O2 y8 U/ o' P * M8 X. N; d% ZThanks a lot.
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发表于 2007-11-24 20:29
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