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.- z$ t% r$ J: e" p0 U: K+ a; Z
Note: CS=80 3 N0 d! `/ U! N7 ?& i ) r6 @2 {3 |( T5 MRPM 1/8=6 t4 M* C0 G! z# v; Q* ?: Y
RPM 3/4=) g" Y, B0 @: q. ]
8 D0 G6 B+ O# H
Thanks a lot.