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Jaw crushers are heavy duty machines and hence need to be robustly constructed. The outer frame is generally made of cast iron or steel. The jaws themselves are usually constructed from cast steel. Jaw Crusher is the most universal crusher in international market with the advantages of large crushing ratio, even granularity, simple structure and convenient maintenance. It is widely used in mining, metall-urgical industry, building material, highway, railway, and chemical industry; and in the whole process of sand or stone production line, it is mainly used in the primary crushing for many kinds of mining stones.Stone crusher(ore crusher,rock crusher),grinding mill, sand making machine, mobile crushing plant, mineral processing equipment manufacture from Henan Hongxing, Hongxing is a professional mining crushing machinery manufacturer, we sell jaw crusher, impact crusher, cone crusher, Raymond mill, ball mill, sand Maker, portable crusher and other equipment.Many stone crusher machine suppliers hire out portable mobile aggregate rock crushers for crushing substantial volumes of rock or stones to manufacture aggregate, sand and gravel for numerous building tasks. These transportable mobile aggregate rock crushers are backed by diesel generators for power which tends to make it probable to operate them even in remote places.A jaw crusher is generally used as a primary crusher in a crushing circuit. Product is fed into the top of the jaw crusher by an vibrating grizzly feeder. The eccentric rotating drive shaft causes the movable jaw to oscillate crushing the aggregate against a fixed jaw. Jaw crushers are run on belt drives driven by an electric motor or diesel engine. Jaw crushers are used extensively throughout the aggregate and mineral processing industry.Jaw crushers are usually constructed in sections to ease the process transportation if they are to be taken underground for carrying out the operations. We welcome you to know more about us.http://www.sell-ballmill.com/pro/jaw-crusher.html