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., o7 ~9 n5 D. n, H4 e5 G
Note: CS=807 k$ X. Q. _2 _4 d
3 O+ s9 s5 d& {- C7 ]RPM 1/8= 3 ~, d+ h w" T! L0 d/ t" qRPM 3/4= 7 k. @% m# y' p. B# v5 c4 f0 s3 V# P6 j& V
Thanks a lot.
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发表于 2007-11-24 20:29
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