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. 9 S8 s- [9 C% U% W R4 WNote: CS=80. j% Q [& K+ J* `5 H0 ^0 ?
8 ~) Y: N& R+ }$ P9 j/ CRPM 1/8=9 h* O* Y2 B. m- p8 J
RPM 3/4=$ N$ G* U ? [) n m