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. 2 M% F) f9 c8 e( W+ m% ~: mNote: CS=809 ]$ y* q; C, B+ T! v
0 T9 Y# W- S ]4 L, i' {RPM 1/8= ( U. ~) E9 ~% W( zRPM 3/4=) ^9 c0 n8 S% \% I4 K