Product Description
Rock drilling tools Tapered Drill Rod is to provide a hexagonal chuck section to provide leverage for the rotation chuck bushing. It usually has a forged collar to maintain the proper shank striking face position in the rock drill, and a tapered drill bit end. Tapered steel lengths are measured from the collar to the bit end. Holes are usually drilled in 0.6 m increments to accommodate the air leg feed length. The drilled steel is extracted and followed with a slightly smaller diameter rock drill bit on the next steel length in the sequence.

Carburization is a process used to harden the entire tapered drill rod surface both internally and externally to strengthen and extend the life of the tapered drill rod.
Shank Hexagon: 19*108 mm, 22*108mm, 25*108 mm, 25*159 mm; 6, 7, 11, 12 degree taper in most lengths, taper degree of drill steel is mostly imports for excellent drilling productivity.
H22*108-2400mm -12° tapered drill rods |
Describtion |
12° tapered drill rods |
Shank |
H22*108 |
Effective length |
2400mm |
full length |
2508mm |
Painting |
Black |
Head treadment |
34-36 HRC |
Steel grade |
Z708 |
Perforemace |
For hard rock F=10-12 |
Air jack hammer |
Y19A YT24 Y27 YT28 YT29A 7655 |
Shank size |
Length in mm |
Length in feet |
Part number |
22X108 |
610 |
2 |
0610-xx* |
22X108 |
1220 |
4 |
1220-xx* |
22X108 |
1830 |
6 |
1830-xx* |
22X108 |
1980 |
2006-1-2 |
1980-xx* |
22X108 |
2440 |
8 |
2440-xx* |
22X108 |
3050 |
10 |
3050-xx* |
22X108 |
3660 |
12 |
3660-xx* |
22X108 |
5485 |
18 |
5485-xx* |
22X108 |
6400 |
21 |
6400-xx* |
22X108 |
7315 |
24 |
7315-xx* |
Shank size |
Length in mm |
Length in feet |
Part number |
25X108 |
1500 |
4,9 |
1500-7* |
25X108 |
1830 |
6 |
1830-7* |
25X108 |
2000 |
2006-1-2 |
2000-7* |
25X108 |
2200 |
7,2 |
2200-7* |
25X108 |
3050 |
10 |
3050-7* |
Product Picture



