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. ' A7 q' N, P0 u/ \% t: k5 y6 j9 ZNote: CS=80. u2 _$ I2 L2 g" z2 @( H
/ |7 x* X! Q2 {1 w
RPM 1/8=- ]9 q7 R& z( V2 _0 v
RPM 3/4=6 Y3 h' H# U3 Q: @: [; o' Y* t
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发表于 2007-11-24 20:29
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