Question

A milling cutter having $8$ teeth is rotating at $150rpm$. If the feed per tooth is $0.1mm$, the speed in $mm$ per minute is

• A. $120$
• B. $187$
• C. $125$
• D. $70$

Answer 1

The correct option is A $120$

Teeth on milling cutter =8

$\text{rpm}=150$

$\text{Feed per tooth,}{f}_t=0.1mm$

$\text{Feed per revolution}=\text{feed per tooth}\times \text{no.of teeth}$
$=0.1\times 8=0.8mm/rev$.

$\text{Speed}=0.8\times 150mm/min$
$=120mm/min$