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.) c* p2 s# W( D5 L$ V
Note: CS=80 ! R" {+ \9 N$ q) I ( t; j4 Q) f1 h9 IRPM 1/8=& q0 n8 b9 ~# h& s% s: Q
RPM 3/4=: ], F8 [) t7 ]2 P. J6 ]% F# I2 Z! q