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. O9 K- p1 |, P
Note: CS=80 5 o! c8 [) \. D% n# H& X , s8 M" z5 _& Q9 yRPM 1/8= ' R# ~4 a( l% rRPM 3/4=$ |* S! A4 R, q" z+ _
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发表于 2007-11-24 20:29
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