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. + [; r6 f5 E0 n; E) u; G3 ^' \Note: CS=80 - U, W- l1 u9 b% v o) S( H. N. I% B& Q! N
RPM 1/8=# }- e U/ D- d
RPM 3/4= % p3 G( ^6 u9 F5 K2 R5 L6 u" a8 \+ T
Thanks a lot.
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发表于 2007-11-24 20:29
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