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. d, ~4 Y' a8 y, l9 }
Note: CS=80 S9 B; W5 [1 V% E: g) z$ W 2 _' |/ c1 i' Y) YRPM 1/8=" F2 e/ O: B2 q s* Y
RPM 3/4=7 P0 X/ i# I4 E, }3 p
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发表于 2007-11-24 20:29
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