钎头-球型截齿 BUTTON BIT - Spherical buttons | |||||||||||||||||||
直径(mm) Diameter | 102 | 102 | 102 | 102 | 102 | 102 | 115 | 115 | 115 | 115 | 115 | 115 | 115 | 127 | 127 | 127 | 127 | 127 | |
截齿数量 No. of buttons | 14 | 14 | 11 | 14 | 13 | 13 | 17 | 17 | 14 | 14 | 14 | 14 | 16 | 22 | 20 | 16 | 14 | 16 | |
冲水孔 Flushing hole | side | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | |||||||
centre | 2 | 2 | 3 | 4 | 4 | 4 | 1 | 1 | 2 | 4 | 4 | 4 | 3 | 2 | 2 | 2 | 4 | 4 | |
直径(mm) Diameter | 127 | 127 | 127 | 140 | |||||||||||||||
截齿数量 No. of buttons | 16 | 14 | 14 | 14 | |||||||||||||||
冲水孔 Flushing hole | side | 1 | |||||||||||||||||
centre | 4 | 4 | 4 | 4 | |||||||||||||||
钎头-子弹型截齿 BUTTON BIT - Ballistic buttons | |||||||||||||||||||
直径(mm) Diameter | 89 | 89 | 89 | 89 | 89 | 89 | 102 | 102 | 102 | 102 | 102 | 102 | 115 | 115 | |||||
截齿数量 No. of buttons | 14 | 14 | 12 | 13 | 13 | 14 | 12 | 14 | 11 | 14 | 13 | 13 | 14 | 14 | |||||
冲水孔 Flushing hole | side | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||
centre | 2 | 2 | 2 | 4 | 4 | 4 | 2 | 2 | 3 | 4 | 4 | 4 | 2 | 4 |