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.( j' G& O' {/ `7 }5 B1 u
Note: CS=80 1 y% Q% i- T9 n3 ]0 S3 C* G3 q( w5 p# R! y7 O9 L- y
RPM 1/8=1 e# z% f9 u: G
RPM 3/4=. [7 T9 I& V: N9 n
3 A! b9 G+ m7 }2 y
Thanks a lot.
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发表于 2007-11-24 20:29
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