High Penetration 254mm - 381mm Size Carbide Tipped DTH DrillDrill Bits for Tunneling Mining
High Penetration 254mm - 381mm Size Carbide Tipped DTH DrillDrill Bits for Tunneling Mining
Down-the-hole rock tools (drilling tools) are rock drilling equipment which takes compressed air as power source to partially transfer impact power into drilling holes. An air distributing device in a top hammer controls a piston to move back and forth. An impact device arranged in the front of the top hammer transfers the impact powder to a down-the-hole bit to crush rocks.
DTH rock drill bits are the tools of cutting rock. KSQ DTH bits are made of superior quality alloy steel which is made by Timken in U.S. Besides, all our DTH bits are using the brand "Element Six" T.C carbide which provides (the T.C buttons) for Boart Longyear. In addition art manufacturing technology makes our DTH bits with higher and more reliable quality.
| Hammer Size | Hammer Shank Style | Bit Diameter | Face Design | Insert Shapes | |
| mm | inch | ||||
| 2 | BR1 | 64~76 | 2 1/2 ~ 3 | FF, CV | S, P, B, C |
| 2.5 | BR2, Minroc 2, AHD25 | 76~90 | 3 ~ 3 1/2 | FF, CV | S, P, B, C |
| 3.5 | BR 3, Minroc 3, Mach33/303, DHD3.5, TD35, XL3, Mission 30, COP32, Secoroc3, COP34 | 85~105 | 3 3/8 ~ 4 1/8 | FF, CV | S, P, B, C |
| 4 | DHD340A/DHD4, COP44, Secoroc4/44, Numa4, Mincon 4, SD4(A34-15), QL40, Mission 40, COP42, Mach 40/44, Dominator 400, XL4 | 105~130 | 4 1/8 ~ 5 | FF, CV, CC | S, P, B, C |
| 5 | DHD350R, COP54, Secoroc5/54, Mach 50, SD5(A43-15), BR5V, COP54 Gold, QL50, TD50/55, HP50/55, Patriot 50, Mission 50/55, COP52, XL5/5.5 | 137~165 | 5 3/8 ~ 6 1/2 | FF, CV, CC | S, P, B, C |
| 6 | DHD360, DHD6/6.5, SF6, COP64, Secoroc 6, Challenger/Patriot 6, XL61/PD61, Mach 60, COP64 Gold, QL60, SD6(A53-15)/PD6, ADEC-6M, TD60/65/70, HP60/HP65, Mission 60/60W/65, COP62, XL6 | 152~203 | 6 ~ 8 | FF, CV, CC | S, P, B, C |
| 8 | DHD380, COP84, Secoroc 84, Mach 80, Challenger/Patriot 80, SD8(63-15), XL8, QL80, Mission 80/85 | 203~305 | 8 ~ 12 | FF, CV, CC | S, P, B |
| 10 | SD10, Numa100 | 241~356 | 9 1/2 ~ 14 | FF, CC | S |
| 12 | DHD112, XL12, Mach132, Mach120, SD12(A100-15), NUMA120, NUMA125 | 305~419 | 12 ~ 16 1/2 | FF, CC | S |
| 14 | ACD145 | 381~470 | 15 ~ 18 1/2 | FF, CC | S |
| 18 | ACD185 | 445~660 | 17 1/2 ~ 26 | FF, CC | S |
| 20 | ACD205 | 495~711 | 19 1/2 ~ 28 | FF, CC | S |
| 24 | ACD245 | 711~990 | 28 ~ 39 | FF, CC | S |
| 32 | ACD325 | 720~1118 | 28 1/2 ~ 44 | FF, CC | S |
Application:
More DTH button bits:
| Bit size | Shank type | Recommended DTH bits diameter |
| 3.5”/3” DTH hammer bits | COP34, DHD3.5, MISSION30, BR3 shank | 90mm~ 105mm |
| 4” DTH hammer bits | DHD340, QL40, MISSION40, SD4 shank | 110mm~ 130mm |
| 5” DTH hammer bits | DHD350, QL50, MISSION50, SD5 shank | 134mm~ 152mm |
| 6” DTH hammer bits | DHD360, QL60, MISSION60, SD6 shank | 152mm~ 203mm |
| 8” DTH hammer bits | DHD380, QL80, MISSION80, SD8 shank | 203mm~ 305mm |
| 12” DTH hammer bits | DHD112, SD12 and QL120 shank. | Available upon to customers’ request |
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