Tapered Button Bit Specifications
| Specification | Options |
|---|---|
| Bit Diameter | 32mm, 34mm, 36mm, 38mm, 40mm, 41mm, 42mm, etc. |
| Taper Angle | 7°, 11°, 12° |
| Drill Rod | H19 / H22 / H25 |
| Button Type | Spherical / Ballistic / Semi-ballistic |
| Button Quantity | 5 / 7 / 8 buttons, etc. |
| Face Design | Flat / Convex |
| Application | Mining / Quarrying / Tunneling / Construction |
7°, 11° and 12° Tapered Button Bits
7° Tapered Button Bits
For compatible 7° tapered drill rods, commonly used in small-hole rock drilling applications.
| Skirt Type | Diameter | Buttons | Angle | Flushing Hole | Weight | |||
|---|---|---|---|---|---|---|---|---|
| Gauge | Front | Side | Front | |||||
| [mm] | [in] | [No.] × [mm] | [No.] × [mm] | [ ° ] | [No.] | [No.] | [kg] | |
| Button bit, Short skirt | 32 | 1 1/4 | 3×8 | 1×8 | 35° | 1 | 1 | 0.24 |
| Button bit, Short skirt | 33 | 1 19/64 | 5×7 | 2×7 | 35° | 1 | 2 | 0.26 |
| Button bit, Short skirt | 34 | 1 11/32 | 4×7 | 2×7 | 40° | 1 | 1 | 0.29 |
| Button bit, Short skirt | 35 | 1 3/8 | 5×8 | 2×7 | 35° | 1 | 1 | 0.33 |
| Button bit, Short skirt | 36 | 1 27/64 | 3×9 | 1×8 | 40° | 1 | 1 | 0.37 |
| Button bit, Short skirt | 36 | 1 27/64 | 5×8 | 2×7 | 35° | 1 | 1 | 0.37 |
| Button bit, Short skirt | 38 | 1 1/2 | 3×9 | 1×8 | 35° | 1 | 1 | 0.38 |
| Button bit, Short skirt | 38 | 1 1/2 | 5×8 | 2×7 | 35° | 1 | 1 | 0.38 |
| Button bit, Short skirt | 38 | 1 1/2 | 5×9 | 2×7 | 40° | 1 | 2 | 0.38 |
| Button bit, Short skirt | 40 | 1 37/64 | 3×9 | 1×8 | 30° | 1 | 1 | 0.4 |
| Button bit, Short skirt | 40 | 1 37/64 | 3×10 | 1×9 | 30° | 1 | 1 | 0.4 |
| Button bit, Short skirt | 40 | 1 37/64 | 3×9 | 1×9 | 35° | 1 | 1 | 0.4 |
| Button bit, Short skirt | 40 | 1 37/64 | 5×9 | 2×7 | 35° | 1 | 1 | 0.4 |
| Button bit, Short skirt | 42 | 1 21/32 | 3×9 | 1×8 | 30° | 1 | 1 | 0.43 |
| Button bit, Short skirt | 42 | 1 21/32 | 3×10 | 1×9 | 30° | 1 | 1 | 0.43 |
| Button bit, Short skirt | 42 | 1 21/32 | 3×9 | 1×9 | 35° | 1 | 1 | 0.43 |
| Button bit, Short skirt | 42 | 1 21/32 | 5×9 | 2×8 | 35° | 1 | 1 | 0.43 |
| Button bit, Long skirt | 32 | 1.25 | 5×7 | 2×7 | 35° | 1 | 1 | 0.3 |
| Button bit, Long skirt | 33 | 1.296875 | 5×7 | 2×7 | 35° | 1 | 1 | 0.31 |
| Button bit, Long skirt | 35 | 1.375 | 5×8 | 2×7 | 35° | 1 | 1 | 0.36 |
| Button bit, Long skirt | 38 | 1.5 | 5×9 | 2×7 | 35° | 1 | 1 | 0.41 |
| Button bit, Long skirt | 41 | 1.625 | 5×9 | 2×7 | 35° | 1 | 1 | 0.42 |
11° Tapered Button Bits
Designed to match compatible 11° tapered rods for efficient impact energy transfer.
| Skirt Type | Diameter | Buttons | Angle | Flushing Hole | Weight | ||||
|---|---|---|---|---|---|---|---|---|---|
| Gauge | Front | Side | Front | ||||||
| [mm] | [in] | [No.] × [mm] | [No.] × [mm] | [ ° ] | [No.] | [No.] | [kg] | ||
| Button bit, Short skirt | 32 | 1 1/4 | 3×8 | 1×8 | 35° | 2 | 1 | 0.24 | |
| Button bit, Short skirt | 32 | 1 1/4 | 5×7 | 2×7 | 40° | 1 | 1 | 0.24 | |
| Button bit, Short skirt | 33 | 1 19/64 | 4×7 | 2×7 | 40° | 1 | 1 | 0.25 | |
| Button bit, Short skirt | 34 | 1 11/32 | 4×7 | 2×7 | 40° | 1 | 1 | 0.29 | |
| Button bit, Short skirt | 35 | 1 3/8 | 5×7 | 2×7 | 35° | 1 | 1 | 0.33 | |
| Button bit, Short skirt | 35 | 1 3/8 | 5×8 | 2×7 | 35° | 1 | 1 | 0.33 | |
| Button bit, Short skirt | 36 | 1 27/64 | 3×9 | 1×8 | 40° | 1 | 1 | 0.36 | |
| Button bit, Short skirt | 36 | 1 27/64 | 4×7 | 2×7 | 40° | 1 | 1 | 0.36 | |
| Button bit, Short skirt | 36 | 1 27/64 | 5×8 | 2×7 | 35° | 1 | 1 | 0.36 | |
| Button bit, Short skirt | 38 | 1 1/2 | 3×9 | 1×9 | 40° | 1 | 1 | 0.39 | |
| Button bit, Short skirt | 38 | 1 1/2 | 3×9 | 2×8 | 40° | 1 | 1 | 0.39 | |
| Button bit, Short skirt | 38 | 1 1/2 | 5×8 | 2×7 | 35° | 1 | 1 | 0.39 | |
| Button bit, Short skirt | 38 | 1 1/2 | 5×9 | 2×7 | 35° | 1 | 1 | 0.39 | |
| Button bit, Short skirt | 40 | 1 37/64 | 3×9 | 1×9 | 40° | 1 | 1 | 0.4 | |
| Button bit, Short skirt | 40 | 1 37/64 | 3×9 | 2×8 | 40° | 1 | 1 | 0.4 | |
| Button bit, Short skirt | 40 | 1 37/64 | 3×9 | 2×9 | 40° | 2 | 1 | 0.4 | |
| Button bit, Short skirt | 40 | 1 37/64 | 5×9 | 2×7 | 35° | 1 | 1 | 0.4 | |
| Button bit, Short skirt | 40 | 1 37/64 | 5×9 | 2×8 | 35° | 1 | 1 | 0.4 | |
| Button bit, Short skirt | 41 | 1 5/8 | 5×9 | 2×7 | 35° | 1 | 1 | 0.41 | |
| Button bit, Long skirt | 32 | 1 1/4 | 5×7 | 2×7 | 35° | 1 | 1 | 0.3 | |
| Button bit, Long skirt | 33 | 1 19/64 | 5×7 | 2×7 | 35° | 1 | 1 | 0.31 | |
| Button bit, Long skirt | 33 | 1 19/64 | 6×7 | 2×7 | 40° | 1 | 2 | 0.31 | |
| Button bit, Long skirt | 35 | 1 3/8 | 6×7 | 2×7 | 40° | 1 | 2 | 0.35 | |
| Button bit, Long skirt | 38 | 1 1/2 | 5×9 | 2×7 | 35° | 1 | 1 | 0.41 | |
| Button bit, Long skirt | 41 | 1 5/8 | 5×9 | 2×7 | 35° | 1 | 1 | 0.42 | |
| Button bit, Long skirt | 35 | 1 3/8 | 5×9 | 2×7 | 35° | 1 | 1 | 0.38 | |
| Button bit, Long skirt | 36 | 1 27/64 | 5×9 | 2×7 | 35° | 1 | 1 | 0.39 | |
| Button bit, Long skirt | 38 | 1 1/2 | 5×9 | 2×7 | 35° | 1 | 1 | 0.41 | |
| Button bit, Long skirt | 41 | 1 5/8 | 5×9 | 2×7 | 35° | 1 | 1 | 0.42 | |
12° Tapered Button Bits
Available in multiple diameters and button configurations for compatible 12° tapered drilling systems.
| Skirt Type | Diameter | Buttons | Angle | Flushing Hole | Weight | |||
|---|---|---|---|---|---|---|---|---|
| Gauge | Front | Side | Front | |||||
| [mm] | [in] | [No.] × [mm] | [No.] × [mm] | [ ° ] | [No.] | [No.] | [kg] | |
| Button bit, Short skirt | 28 | 1 7/64 | 3×7 | 1×7 | 20° | 1 | 1 | 0.2 |
| Button bit, Short skirt | 28 | 1 7/64 | 4×7 | 1×7 | 35° | 1 | 1 | 0.2 |
| Button bit, Short skirt | 29 | 1 9/64 | 3×7 | 1×7 | 40° | 1 | 1 | 0.21 |
| Button bit, Short skirt | 30 | 1 3/16 | 3×7 | 1×7 | 40° | 1 | 1 | 0.22 |
| Button bit, Short skirt | 30 | 1 3/16 | 4×7 | 1×7 | 35° | 1 | 1 | 0.22 |
| Button bit, Short skirt | 30 | 1 3/16 | 4×7 | 2×7 | 30° | 1 | 1 | 0.22 |
| Button bit, Short skirt | 32 | 1 1/4 | 5×7 | 2×7 | 40° | 1 | 2 | 0.24 |
| Button bit, Short skirt | 33 | 1 19/64 | 5×7 | 2×7 | 35° | 1 | 1 | 0.25 |
| Button bit, Short skirt | 34 | 1 11/32 | 5×8 | 2×7 | 35° | 1 | 1 | 0.29 |
| Button bit, Short skirt | 35 | 1 3/8 | 4×7 | 2×7 | 35° | 1 | 1 | 0.33 |
| Button bit, Short skirt | 35 | 1 3/8 | 5×8 | 2×7 | 35° | 1 | 2 | 0.33 |
| Button bit, Short skirt | 35 | 1 3/8 | 5×9 | 2×7 | 35° | 1 | 1 | 0.33 |
| Button bit, Short skirt | 36 | 1 27/64 | 5×9 | 2×7 | 35° | 1 | 1 | 0.37 |
| Button bit, Short skirt | 37 | 1 29/64 | 5×9 | 2×7 | 40° | 1 | 1 | 0.38 |
| Button bit, Short skirt | 38 | 1 1/2 | 3×9 | 1×9 | 40° | 1 | 1 | 0.4 |
| Button bit, Short skirt | 38 | 1 1/2 | 5×9 | 2×7 | 35° | 1 | 1 | 0.4 |
| Button bit, Short skirt | 41 | 1 5/8 | 5×9 | 2×7 | 35° | 1 | 1 | 0.41 |
| Button bit, Long skirt | 32 | 1 1/4 | 5×7 | 2×7 | 35° | 1 | 1 | 0.3 |
| Button bit, Long skirt | 33 | 1 19/64 | 5×7 | 2×7 | 35° | 1 | 1 | 0.31 |
| Button bit, Long skirt | 33 | 1 19/64 | 6×7 | 2×7 | 40° | 1 | 2 | 0.31 |
| Button bit, Long skirt | 35 | 1 3/8 | 6×7 | 2×7 | 40° | 1 | 2 | 0.35 |
| Button bit, Long skirt | 48 | 1 1/2 | 5×9 | 2×7 | 35° | 1 | 1 | 0.41 |
| Button bit, Long skirt | 41 | 1 5/8 | 5×9 | 2×7 | 35° | 1 | 1 | 0.42 |
| Button bit, Long skirt | 35 | 1 3/8 | 5×9 | 2×7 | 35° | 1 | 1 | 0.38 |
| Button bit, Long skirt | 36 | 1 27/64 | 5×9 | 2×7 | 35° | 1 | 1 | 0.39 |
| Button bit, Long skirt | 38 | 1 1/2 | 5×9 | 2×7 | 35° | 1 | 1 | 0.41 |
| Button bit, Long skirt | 41 | 1 5/8 | 5×9 | 2×7 | 35° | 1 | 1 | 0.42 |
What Is a Tapered Button Bit?
A tapered button bit is a type of top hammer rock drilling tool designed to work with tapered drill rods. The bit connects to the rod through a tapered socket, allowing impact energy from the rock drill to be transferred efficiently to the rock.
Tapered button bits are fitted with tungsten carbide buttons on the bit face to break and crush rock during drilling. They are commonly used with pneumatic rock drills for small-hole drilling in mining, quarrying, tunneling, construction, and stone work.
They are available in different diameters, taper angles, button configurations, and face designs. Common taper connections include 7°, 11°, and 12°. When selecting a tapered button bit, the taper angle must match the tapered drill rod to ensure proper connection and stable drilling performance.
Applications of Tapered Button Bits
Mining
For small-hole drilling, drifting and other rock drilling operations.
Quarrying
Used for drilling blast holes in stone and quarry operations.
Tunneling
Suitable for small-hole drilling with pneumatic rock drills.
Construction
For rock excavation and drilling in construction projects.
FAQ
What taper angles are available for tapered button bits?
Common taper angles include 7°, 11°, and 12°. The correct taper angle should match the taper of the drill rod to ensure a secure connection and stable drilling performance.
What sizes of tapered button bits are available?
Tapered button bits are available in a wide range of diameters, commonly including 32mm, 34mm, 36mm, 38mm, 40mm, 41mm, and 42mm. Other sizes can also be supplied depending on the drilling system and application.
How do I choose the correct tapered button bit?
The main factors to consider are the required hole diameter, taper angle, drill rod size, button configuration, rock hardness, and drilling application. If you are unsure, you can send us your drill rod specifications and required hole size for matching.
What is the difference between a tapered button bit and a threaded button bit?
A tapered button bit connects to the drill rod through a tapered socket, while a threaded button bit uses a threaded connection such as R25, R32, R38, T38, or T45. Tapered bits are commonly used for smaller-hole drilling with pneumatic rock drills, while threaded bits are generally used in heavier top hammer drilling systems.
What information should I provide when requesting a quotation?
Please provide the bit diameter, taper angle, drill rod size, required quantity, and drilling application. If available, you can also send photos or specifications of your current drill bits and rods so that we can confirm the correct model.