HOME > DTH BITS > DTH BITS
down the hole bit
Topdrill DTH Bits provide more cutting power and faster rates with heat treatment and tightly controlled
machining tolerances.
The biggest DTH Bits in the world have been performed successfully on job sites.
The biggest DTH Bits in the world have been performed successfully on job sites.
Specifications
| Bit Diameter (mm)l | Weight (kg) | Standard Hammer |
Hammer Outside Diameter (mm) |
| 2 3/4" (70) | 2.5 | ACE20 | 62 |
| 3 1/8" (80) | 2.7 | ||
| 3 3/4" (90) | 4.6 | ACE30, ACE35 | 79, 85 |
| 3 7/8" (100) | 5.4 | ||
| 4 1/8" (105) | 8.4 | ACE40 | 98 |
| 4 1/2" (115) | 9.2 | ||
| 5" (127) | 10.3 | ||
| 5 1/2" (140) | 17.3 | ACE50, TD50 | 121, 116 |
| 5 3/4" (146) | 18.0 | ||
| 6 1/2" (165) | 27.6 | ACE60 | 142 |
| 6 3/4" (172) | 30.4 | ||
| 7 1/2" (191) | 33.5 | ||
| 7 7/8" (200) | 52 | ACE80 | 182 |
| 8 1/2" (216) | 56 | ||
| 9 1/2" (241) | 62 | ||
| 10" (254) | 83 | TD100 | 225 |
| 11 7/8" (302) | 107 | ||
| 12 1/4" (311) | 144 | TD112 | 274 |
| 15" (381) | 198 | ||
| 15" (381) | 255 | TD320 | 320 |
| 17 1/2" (445) | 340 | ||
| 18" (457) | 372 | TD350 | 357 |
| 20" (508) | 470 | ACE380 | 376 |
| 21 5/8" (550) | 532 | ||
| 22" (559) | 588 | TD450 | 400 |
| 23 5/8" (600) | 648 | ||
| 24" (610) | 670 | ||
| 30 1/2" (775) | 1,290 | TD550 | 525 |
| 31 1/2" (800) | 1,334 | ||
| 38 3/8" (975) | 2,350 | TD700 | 650 |
| 40" (1016) | 3,420 | TD800 | 758 |
| 43" (1092) | 3,550 | ||
| 46 1/4" (1175) | 3,634 |
Others shank type or size is available with customer's request
