subject: Impact Stone Crusher (12.14) [print this page] The stone is a unit of measure, abbreviation st which, when it ceased to be legal for trade in United Kingdom in 1985, was defined in British legislation as being a weight or mass [sic] equal to 14 avoirdupois pounds (about 6.35 kilograms). It was also formerly used in several Commonwealth countries.
Eight stones make a hundredweight in the Imperial system. Given its imprecise definition, it is arguable whether one should use kilograms (a mass) or newtons (a weight/force) as the equivalent SI unit.
PF Series Impact Stone Crusher is a new product that absorbs advanced technologies at home and abroad. This Series equipment can crusher material which max feed size is less than 500mm, compression strength is not more than 320 Mpa (eg: granite, limestone, concrete etc.) With its excellent performance and good performance, Impact Crusher is widely used in highway, hydroelectric, artificial stone and sand, crushing and building material industry ect.
PF Series Impact Crusher use impact energy to crush materials. When the impact crusher works, the motor drives the rotor rotate of the impact crusher with high speed. When the materials get into the area which the hammers effect, under the impact function of the hammer at a high speed, the materials are thrown to the impact device above the rotor continuously. And then the materials are rebounded from the impact liner to the area where the hammers effects for being recrushed, then discharged from the discharge port. Users can adjust the space between Impact Rack and Rotor Support, and then get to the expected size.
