The 50-80tph mobile Jaw Crusher was designed by ourselves, utilizing the very latest European technology, including finite element techniques to minimize stress levels within the frame itself. DSMAC has used all our experience gained over the last 25 years in manufacturing crushers, to produce our most modern and efficient crushers, Especially Mobile Jaw Crusher, which is targeted at the Recycling and Aggregate Contractor segment of the market. the Mobile jaw crusher has the added benefit of eliminating stress on the chassis. The crusher is welded in low stress areas, thus giving longer life. http://www.vjawcrusher.com/mobile-jaw-crusher/150-200TPH-Track-mobile-jaw-crusher.html