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我国严重缺铜，目前国内用铜50％以上依赖进口。我国锌储量居世界首位，以锌代铜符合国家资源政策。全国各类圆锥破碎机拥有量达3000余台套。圆锥破碎机减摩耐磨三大件（锥形轴套、直形轴套、碗形轴瓦）属于易损件，因在服役时受强烈冲击和磨损，属于重载工况下承受冲击的减摩
China has a serious shortage of copper. At present, more than 50% of domestic copper is imported from China. China’s zinc reserves ranks first in the world, with zinc on behalf of copper in line with national resources policy. Various types of cone crusher owned more than 3,000 sets of Taiwan. Cone crusher anti-friction and wear-resistant three pieces (tapered bushings, straight bushings, bowl-shaped bush) are wearing parts, due to strong impact and wear in service, are under heavy load to withstand the impact of reduction Mount