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.- V) R7 N* k# D* x
Note: CS=80, s' E0 I* Y' d4 i# P+ y! Y0 L
8 t6 V$ r/ [$ U* H0 @& PRPM 1/8= ' e* K2 F8 ]" BRPM 3/4=- f5 I4 K7 t1 D: A+ z* H; H0 E
L7 ?8 c+ N! E8 j! E' B! m
Thanks a lot.