According to different swing methods of the moving Ore Milling Equipment, the crusher can be classified into three kinds: simple swing crusher, complex swing crusher and integrated swing crusher. There are no unified stipulations about the models of the jaw crusher. In general, manufacturers set models on their own. At present, the most common jaw crushers are PE series, which are widely used in mining, metallurgy, building materials, highway, railway, water conservancy and chemical industry etc.

We are a joint-stock enterprise that produces large and medium-sized Ore Milling Equipment and mills forming R&D, production and sale into an integral system. Jaw crushers from Kefid should be fed a consistent rate of feed that will result in the crushing chamber being kept full at all times. This will result in more stone-on-stone crushing, reducing the wear on the (jaw die) manganese wear plates, creating a more cubical product, and result in more even wear over the length of the jaw die.

Generally all material smaller than the discharge gap should be removed (scalped) prior to being fed into the Ore Milling Equipment. This will increase the tons per hour of total production by the plant, and reduce wear on the jaw dies. It will also reduce fines production and increase cubical product. A jaw crusher should not be sized to the maximum size rock that might be fed to the plant, but a size that will handle 95-98% of the material that might be fed to the jaw. Buying to the maximum size of rock that might be fed the jaw will result in buying a jaw crusher that will be under-utilized, difficult to keep choke-fed, cost more than necessary, and have a much higher operating cost. It will cost less to install grizzly bars over the feed hopper to remove the oversize rocks than to buy an over-sized jaw crusher. They can then be manually broken, sold as rip-rap or erosion control or landscaping boulders.