7/9柱 45mm 直径R32螺纹连接球齿钎头 凿岩机钻头
本实用新型公开了一种螺纹球齿钎头.包括钎头主体和球齿,其特征在于所述钎头主体顶端为锥形端,另一端为外螺纹端,所述锥形端从里向外依次交错均匀分布偏心齿孔,内齿孔,中齿孔,边齿孔;偏心齿孔至边齿孔的数量呈两倍数递增,位于两边齿孔之间设有排屑槽;所述外螺纹端内设有进水通道,该进水通道延伸到锥形端的内部并且左,右分别与前冲水孔连通,前,后分别与后冲水孔连通,所述前冲水孔的另一端与辅助槽连通,该辅助槽呈35°倾角从圆台向外开U形通槽,所述偏心齿孔,内齿孔,中齿孔,边齿孔分别安装有球齿.本实用新型球齿具有使用寿命高,稳定性好等特点.
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