Products Description
Tapered button bits stand out as the most sought-after variant of taper drill bits, boasting a versatile head diameter range from 28mm to 51mm to suit diverse drilling tasks. Engineered with carbide buttons hot-pressed firmly onto the bit skirts, these tools deliver outstanding drilling efficiency and exceptional service life-ideal for tackling abrasive rock formations with consistent, reliable performance.
KATDRILLS taper drill bits
With the top quality of alloy steels and the best carbides
The taper button bit uses a hot-setting process, making the button installation more secure.
Vacuum heat treatment process increases wear resistance and extends service life.
Inner hole zinc spraying or copper sleeve process for a more secure connection
Parameters
| Tapered degree | 4°46′, 6°, 7°, 11°, 12° |
| Bit diameter | 28mm - 60mm |
| Buttons | Spherical buttons, Ballistic buttons, Parabolic Buttons |
| Shank sizes | Hex. 19mm, Hex. 22mm, and Hex. 25mm |
| Buttons | 4, 5, 6, 7, 8, 9 |
Taper drill bits, as a rock drilling tool, are widely used in the following fields:
Tunneling: Powering Safe, Efficient Underground Advance
From highway and railway tunnels to large-scale hydroelectric projects, taper drill bits are the go-to tool for tunneling teams worldwide. Engineered to drill accurate blast holes in all rock types, they ensure smooth, secure excavation progress-cutting downtime and boosting project efficiency.
Construction: Conquering Rocky Terrain with Reliable Penetration
When laying foundations, drilling anchor points, or carrying out site prep and utility installs in rocky ground, taper drill bits deliver unmatched performance. They tackle hard rock strata with ease, making them a vital asset for civil engineering and general construction projects of all sizes.
Mining: Unlocking Valuable Resources with Precision Drilling
Taper drill bits are the backbone of underground and open-pit mining operations. Designed to drill high-quality blast holes, they efficiently break down tough rock formations-accelerating the extraction of minerals and ores while keeping operational costs in check.
Quarrying: Maximizing Yield with Targeted Blasting Support
For quarrying natural stone, aggregates, and geological materials, taper drill bits are essential for controlled blasting. By creating precise drill holes, they enable the clean removal of large stone blocks from quarry faces, ensuring high material quality and optimal resource utilization.
Features
Durable Carbide Construction: Hot-pressed buttons deliver unmatched wear resistance in tough rock.
Versatile Sizing: 28–51mm head diameters fit varied drilling needs.
High-Efficiency Drilling: Fast penetration boosts project productivity.
Long Service Life: Minimizes downtime and replacement expenses.
Cost-Effective Performance: Exceptional durability paired with low maintenance costs for superior value.
Multi-Scenario Application: Perfect for tunneling, mining, construction, quarrying.
Specification
|
Diameter |
Length |
No. of buttons |
Buttons x button diameter |
Gauge buttons angle° |
buttons angle° |
Flushing hole |
Weight approx. |
||||
|
mm |
inch |
mm |
inch |
mm |
mm |
Side |
Center |
kg |
|||
|
gauge |
center |
||||||||||
|
Button bit – For 22 mm (7/8") hex. Rod 4°46' taper angle. Short Skirt |
|||||||||||
|
36 |
1 ¹³⁄₃₂" |
50 |
1 ³¹⁄₃₂" |
7 |
5x7 |
2x7 |
35° |
- |
1 |
2 |
0.2 |
|
Button bit – For 22 mm (7/8") hex. Rod 4°46' taper angle. Long skirt |
|||||||||||
|
33 |
1 ⁵⁄₁₆" |
71 |
2 ⁵⁄₃₂" |
7 |
5x8 |
2x7 |
40° |
15° |
1 |
1 |
0.3 |
|
36 |
1 ¹³⁄₃₂" |
71 |
2 ⁵⁄₃₂" |
7 |
5x9 |
2x7 |
35° |
- |
1 |
1 |
0.3 |
|
41 |
1 ⅝" |
71 |
2 ⁵⁄₃₂" |
7 |
5x7 |
2x7 |
35° |
- |
- |
2 |
0.3 |
|
43 |
1 ¹¹⁄₁₆" |
71 |
2 ⁵⁄₃₂" |
7 |
5x9 |
2x8 |
35° |
- |
2 |
1 |
0.4 |
|
Button bit – For 22 mm (7/8") hex. Rod 7° taper angle. Long skirt |
|||||||||||
|
30 |
1 ³⁄₁₆" |
80 |
3 ⁵⁄₃₂" |
7 |
5x6 |
2x7 |
35° |
15° |
2 |
1 |
0.2 |
|
32 |
1 ¼" |
80 |
3 ⁵⁄₃₂" |
7 |
5x7 |
2x7 |
35° |
15° |
1 |
1 |
0.3 |
|
33 |
1 ⁵⁄₁₆" |
80 |
3 ⁵⁄₃₂" |
8 |
6x7 |
2x7 |
40° |
15° |
1 |
2 |
0.3 |
|
33 |
1 ⁵⁄₁₆" |
80 |
3 ⁵⁄₃₂" |
9 |
6x7 |
3x7 |
40° |
20° |
3 |
0.4 |
|
|
35 |
1 ⅜" |
80 |
3 ⁵⁄₃₂" |
7 |
5x8 |
2x7 |
40° |
15° |
1 |
1 |
0.4 |
|
37 |
1 ¹⁵⁄₃₂" |
80 |
3 ⁵⁄₃₂" |
7 |
5x9 |
2x7 |
40° |
15° |
1 |
1 |
0.4 |
|
41 |
1 ⅝" |
80 |
3 ⁵⁄₃₂" |
7 |
5x9 |
2x8 |
40° |
15° |
1 |
1 |
0.4 |
|
Button bit – For 22 mm (7/8") hex. Rod. 11° taper angle. Short skirt. |
|||||||||||
|
32 |
1 ¼" |
55 |
2 ⁵⁄₃₂" |
8 |
6x7 |
2x7 |
39° |
15° |
1 |
1 |
0.2 |
|
32 |
1 ¼" |
50 |
1 ³¹⁄₃₂" |
6 |
4x7 |
2x7 |
35° |
- |
1 |
1 |
0.3 |
|
34 |
1 ¹¹⁄₃₂" |
50 |
1 ³¹⁄₃₂" |
5 |
3x8 |
2x7 |
35° |
- |
2 |
1 |
0.2 |
|
34 |
1 ¹¹⁄₃₂" |
50 |
1 ³¹⁄₃₂" |
9 |
6x7 |
3x7 |
40° |
20° |
2 |
0.3 |
|
|
34 |
1 ¹¹⁄₃₂" |
50 |
1 ³¹⁄₃₂" |
6 |
4x7 |
2x7 |
40° |
- |
1 |
1 |
0.2 |
|
35 |
1 ⅜" |
55 |
1 ³¹⁄₃₂" |
7 |
5x8 |
2x7 |
40° |
15° |
1 |
1 |
0.3 |
|
36 |
1 ¹³⁄₃₂" |
50 |
1 ³¹⁄₃₂" |
7 |
5x8 |
2x7 |
35° |
- |
1 |
1 |
0.3 |
|
36 |
1 ¹³⁄₃₂" |
50 |
1 ³¹⁄₃₂" |
5 |
3x8 |
2x8 |
40° |
- |
2 |
1 |
0.2 |
|
38 |
1 ½" |
50 |
1 ³¹⁄₃₂" |
4 |
3x9 |
1x9 |
40° |
- |
2 |
1 |
0.3 |
|
38 |
1 ½" |
50 |
1 ³¹⁄₃₂" |
7 |
5x9 |
2x7 |
35° |
- |
1 |
1 |
0.3 |
|
41 |
1 ⅝" |
50 |
1 ³¹⁄₃₂" |
7 |
5x9 |
2x7 |
35° |
- |
2 |
1 |
0.3 |
|
43 |
1 ¹¹⁄₁₆" |
50 |
1 ³¹⁄₃₂" |
7 |
5x9 |
2x9 |
35° |
- |
2 |
1 |
0.4 |
|
Button bit – For 22 mm (7/8") hex. Rod. 12° taper angle. Short skirt. |
|||||||||||
|
27 |
1 ¹¹⁄₁₆" |
50 |
1 ³¹⁄₃₂" |
6 |
4x8 |
2x6 |
40° |
15° |
1 |
1 |
0.2 |
|
28 |
1 ⅛" |
50 |
1 ³¹⁄₃₂" |
4 |
3x7 |
1x7 |
20° |
- |
1 |
1 |
0.1 |
|
28 |
1 ⅛" |
50 |
1 ³¹⁄₃₂" |
6 |
4x6 |
2x6 |
35° |
- |
1 |
1 |
0.2 |
|
30 |
1 ³⁄₁₆" |
50 |
1 ³¹⁄₃₂" |
6 |
4x7 |
2x7 |
30° |
- |
1 |
1 |
0.2 |
|
32 |
1 ¼" |
55 |
2 ⁵⁄₃₂" |
7 |
5x7 |
2x7 |
35° |
- |
1 |
2 |
0.3 |
|
32 |
1 ¼" |
55 |
2 ⁵⁄₃₂" |
7 |
5x7 |
2x7 |
35° |
- |
1 |
1 |
0.2 |
|
32 |
1 ¼" |
55 |
2 ⁵⁄₃₂" |
8 |
6x7 |
2x7 |
39° |
15° |
1 |
2 |
0.3 |
|
33 |
1 ⁵⁄₁₆" |
55 |
2 ⁵⁄₃₂" |
7 |
5x7 |
2x7 |
35° |
- |
1 |
2 |
0.2 |
|
33 |
1 ⁵⁄₁₆" |
55 |
2 ⁵⁄₃₂" |
7 |
5x7 |
2x7 |
35° |
- |
1 |
1 |
0.2 |
|
33 |
1 ⁵⁄₁₆" |
55 |
2 ⁵⁄₃₂" |
8 |
6x7 |
2x7 |
35° |
- |
1 |
2 |
0.2 |
|
33 |
1 ⁵⁄₁₆" |
55 |
2 ⁵⁄₃₂" |
7 |
5x8 |
2x7 |
40° |
15° |
1 |
1 |
0.2 |
|
34 |
1 ¹¹⁄₃₂" |
55 |
2 ⁵⁄₃₂" |
7 |
5x8 |
2x7 |
35° |
- |
1 |
1 |
0.2 |
|
35 |
1 ⅜" |
55 |
2 ⁵⁄₃₂" |
7 |
5x9 |
2x7 |
35° |
- |
1 |
1 |
0.2 |
|
36 |
1 ¹³⁄₃₂" |
55 |
2 ⁵⁄₃₂" |
7 |
5x9 |
2x7 |
35° |
- |
1 |
1 |
0.3 |
|
37 |
1 ¹⁵⁄₃₂" |
55 |
2 ⁵⁄₃₂" |
7 |
5x9 |
2x7 |
40° |
- |
1 |
1 |
0.3 |
|
38 |
1 ½" |
55 |
2 ⁵⁄₃₂" |
7 |
5x9 |
2x7 |
40° |
- |
1 |
1 |
0.3 |
|
38 |
1 ½" |
55 |
2 ⁵⁄₃₂" |
4 |
3x9 |
1x9 |
40° |
- |
1 |
1 |
0.2 |
|
38 |
1 ½" |
55 |
2 ⁵⁄₃₂" |
7 |
5x9 |
2x7 |
35° |
- |
1 |
1 |
0.2 |
|
38 |
1 ½" |
55 |
2 ⁵⁄₃₂" |
7 |
5x9 |
2x7 |
35° |
- |
1 |
1 |
0.2 |
|
41 |
1 ⅝" |
55 |
2 ⁵⁄₃₂" |
7 |
5x9 |
2x7 |
35° |
- |
1 |
1 |
0.3 |
|
45 |
1 ¾" |
55 |
2 ⁵⁄₃₂" |
7 |
5x9 |
2x7 |
35° |
- |
1 |
1 |
0.3 |
|
Button bit – For 22 mm (7/8") hex. Rod 12° taper angle. Long skirt |
|||||||||||
|
32 |
1¼" |
71 |
2 ²⁵⁄₃₂" |
7 |
5x7 |
2x7 |
35° |
- |
1 |
1 |
0.3 |
|
33 |
1 ⁵⁄₁₆" |
71 |
2 ²⁵⁄₃₂" |
7 |
5x7 |
2x7 |
35° |
- |
1 |
1 |
0.3 |
|
33 |
1 ⁵⁄₁₆" |
71 |
2 ²⁵⁄₃₂" |
8 |
6x7 |
2x7 |
40° |
15° |
1 |
2 |
0.3 |
|
33 |
1 ⁵⁄₁₆" |
71 |
2 ²⁵⁄₃₂" |
9 |
6x7 |
3x7 |
40° |
20° |
3 |
- |
0.3 |
|
35 |
1 ⅜" |
71 |
2 ²⁵⁄₃₂" |
8 |
6x8 |
2x7 |
45° |
15° |
1 |
2 |
0.3 |
|
38 |
1 ½" |
71 |
2 ²⁵⁄₃₂" |
7 |
5x9 |
2x7 |
35° |
- |
1 |
1 |
0.4 |
|
Diameter |
Length |
No. of buttons |
Buttons x button diameter |
Gauge buttons angle° |
buttons angle° |
Flushing hole |
Weight approx. |
||||
|
mm |
inch |
mm |
inch |
mm |
mm |
Side |
Center |
kg |
|||
|
gauge |
center |
||||||||||
|
Button bit – for 25 mm (1") hex. Rod 7° taper angle. Long skirt |
|||||||||||
|
41 |
1 ⅝" |
71 |
2 ²⁵⁄₃₂" |
7 |
5x9 |
2x8 |
40° |
- |
1 |
1 |
0.4 |
|
41 |
1 ⅝" |
71 |
2 ²⁵⁄₃₂" |
7 |
5x9 |
2x8 |
40° |
- |
1 |
1 |
0.4 |
|
41 |
1 ⅝" |
71 |
2 ²⁵⁄₃₂" |
9 |
6x9 |
3x7 |
40° |
- |
1 |
3 |
0.4 |
|
41 |
1 ⅝" |
71 |
2 ²⁵⁄₃₂" |
6 |
4x9 |
2x8 |
35° |
- |
1 |
1 |
0.2 |
|
43 |
1 ¹¹⁄₁₆" |
71 |
2 ²⁵⁄₃₂" |
9 |
6x9 |
3x7 |
40° |
- |
1 |
3 |
0.5 |
|
43 |
1 ¹¹⁄₁₆" |
71 |
2 ²⁵⁄₃₂" |
6 |
4x9 |
2x8 |
35° |
- |
1 |
1 |
0.3 |
|
Button bit – for 25 mm (1") hex. Rod 12° taper angle. Long skirt |
|||||||||||
|
36 |
1 ¹³⁄₃₂" |
71 |
2 ²⁵⁄₃₂" |
7 |
5x9 |
2x7 |
35° |
15° |
1 |
1 |
0.3 |
|
38 |
1 ½" |
71 |
2 ²⁵⁄₃₂" |
7 |
5x9 |
2x7 |
40° |
15° |
1 |
1 |
0.4 |
|
41 |
1 ⅝" |
71 |
2 ²⁵⁄₃₂" |
7 |
5x9 |
2x7 |
40° |
15° |
1 |
1 |
0.4 |
Our Service
At KAT Drilling Tools, we deliver customer-centric solutions for mining, construction, exploration, and oil & gas sectors-covering the full drill tool lifecycle.
Customized Design & Manufacturing
Bespoke drill bits/rods tailored to your drilling conditions, compliant with API/ISO standards. Rapid prototyping and batch production available.
Quality Control & Testing
Rigorous raw material, in-process, and final performance inspections. Detailed quality reports for every batch.
Technical Consultation & Support
Expert advice on tool selection, on-site training, and real-time troubleshooting to minimize downtime.
After-Sales Maintenance & Repair
Cost-effective maintenance, professional repair, and fast spare parts supply to extend tool lifespan.
Logistics & Supply Chain
Flexible delivery (bulk/JIT/emergency), secure packaging, and full customs/documentation support for global trade.
Long-Term Partnership
Customized service packages, dedicated account management, and continuous optimization based on your feedback.
Why choose us?
At KAT Drilling Tools, we stand out as your trusted drill tool partner for core advantages that deliver real value:
1. One-Stop Drill Tool Supply
2. Uncompromising Quality
3. Competitive Cost-Effectiveness
4. Professional Technical Support
5. End-to-End Service
6. Global Reliability
7. Trusted Long-Term Partnership
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