Katdrilling Tools officially launches the upgraded 1532-89T45 retrac drill bit, a flagship top hammer consumable engineered to resolve stuck-bit and hole-collapse troubles in fractured rock formations. This 89mm T45 threaded retrac bit integrates optimized carbide layout, reinforced alloy body and multi-spec button combinations (211/411/812 configurations), delivering balanced drilling efficiency and long service life for mining, tunneling and civil anchoring projects worldwide.
1. Key Structural & Production Features
- High-strength blank material: whole-forged alloy steel, completed via quenching and tempering to balance surface hardness and internal toughness against impact fracture.
- Optimized retract skirt structure: extra rear row tungsten carbide inserts trim collapsed rock residues during bit withdrawal, smoothing borehole walls effectively.
- Precision CNC thread machining: tight tolerance T45 thread reduces friction loss of impact force and avoids thread peeling under heavy torque.
2. Product Parameter
T45 Thread: 70mm, 76mm, 82mm, 89mm, 102mm, 115mm, 127mm
|
Button bit(T45) |
Carbide dimension |
Dimensions D |
Flushing hole |
|||||
|
Gauge |
Front |
|||||||
|
[No.] |
[mm] |
[No.] |
[mm] |
[mm] |
[in] |
Front |
Side |
|
|
Flat Face / Retrac |
|
|
|
|
|
|
|
|
|
|
6 |
12.7 |
3 |
12.7 |
76 |
3" |
3 |
1 |
|
|
6 |
14 |
4 |
14 |
89 |
3 1/2" |
3 |
0 |
|
|
8 |
12.7 |
5 |
10 |
76 |
3" |
4 |
0 |
|
8 |
12.7 |
5 |
12.7 |
89 |
3 1/2" |
4 |
2 |
|
|
|
8 |
11 |
6 |
11 |
76 |
3" |
2 |
0 |
|
8 |
12.7 |
6 |
11 |
82 |
3 1/4" |
2 |
0 |
|
|
8 |
12.7 |
6 |
12.7 |
89 |
3 1/2" |
2 |
0 |
|
|
8 |
14 |
6 |
14 |
102 |
4" |
2 |
1 |
|
|
8 |
16 |
6 |
14 |
115 |
4 1/2" |
2 |
0 |
|
|
|
8 |
16 |
8 |
14 |
127 |
5" |
2 |
0 |
|
Drop Center / Retrac |
|
|
|
|
|
|
|
|
|
|
6 |
11 |
3/1 |
11 / 9.5 |
70 |
2 3/4" |
3 |
0 |
|
6 |
12.7 |
3/1 |
11 / 9.5 |
76 |
3" |
3 |
0 |
|
|
|
6 |
14 |
3/2 |
12.7 / 9.5 |
89 |
3 1/2" |
3 |
0 |
|
|
8 |
11 |
4/1 |
10/10 |
76 |
3" |
4 |
0 |
|
8 |
12.7 |
4/1 |
12.7 / 12.7 |
89 |
3 1/2" |
4 |
0 |
|
|
|
8 |
11 |
4/2 |
11 / 9.5 |
89 |
3 1/2" |
4 |
1 |
|
|
8 |
14 |
4/3 |
12.7 / 11 |
102 |
4" |
4 |
1 |
|
8 |
14 |
4/3 |
14 / 12.7 |
115 |
4 1/2" |
4 |
0 |
|
|
8 |
16 |
4/3 |
16 / 12.7 |
127 |
5" |
4 |
2 |
|
3. Main Application Scenarios
- Underground metal & coal mining: medium-depth blast hole drilling, rock bolt anchoring and tunnel development in fragmented mine wall strata.
- Infrastructure tunneling: highway, railway and municipal pipe gallery perimeter hole drilling with frequent broken rock interlayers.
- Open-pit quarrying: medium-depth bench blasting for granite, basalt and other abrasive hard rock.
- Compatible with mainstream jumbo rigs, handheld hydraulic rock drills and top hammer drilling systems across global construction sites.
4. Competitive Core Advantages
Field trials prove the 1532-89T45 retrac drill bit raises average drilling meters per shift and minimizes tool failure rates, becoming a reliable high-efficiency solution for challenging broken-rock top hammer drilling operations.