![How Does a Rock Crusher Work? | Sciencing](/e69yszg/198.jpg)
How Does a Rock Crusher Work? | Sciencing
Apr 24, 2017· Jaw crushers are the oldest and one of the simplest sorts of rock crushers. A jaw crusher is like a giant collapsible V made out of two metal walls. At the bottom, the two walls are very close together and at the top they are further apart. One wall is held still while the other is closed against it usually about three times a second.