阿特拉斯柯普柯公司最近制成一种新型长钎裤钎头,可供平巷或隧道掘进中使用,特别适于在容易引起钎头磨损和卡钎的破碎岩层中作业。规格有直径为35～51毫米的几个品种。这种钎头较小而且钎裤很薄。较好的钎头构型加上最崖的钎裤长度可以减少孔壁对钎头的磨损,并且还可基本排除卡钎的 Atlas Copco recently produced a new drill bit for use on underpasses or tunnels, and is particularly suited to work in broken rock formations that can easily lead to bit wear and sticking. Specifications have diameter of 35 ~ 51 mm in several varieties. This drill bit smaller and braid thin. A better bit configuration, coupled with the brightest braid length, can reduce the wear of the hole wall to the bit, and also substantially eliminate the need for brazing