Taper drill bits, also known as tapered drill bits or tapered drilling tools, are tools designed with a tapered shape, where the diameter of the bit gradually decreases from the base to the tip. These drill bits are commonly used in various drilling applications across industries such as mining, construction, and drilling for oil and gas. The taper design serves several purposes in drilling operations:
Efficient Drilling:
The tapered shape allows for more efficient drilling, especially in challenging rock formations. The gradual reduction in diameter helps in achieving deeper penetration.
Compatibility with Tapered Drill Rods:
Taper drill bits are often used in conjunction with tapered drill rods. The matching taper angles ensure a secure and efficient connection between the drill bit and the rod.
Versatility:
Taper drill bits are versatile and can be used for a range of drilling applications, including exploration drilling, blast hole drilling, and rock drilling.
| Drill bit | Diameter | No×button diameter | Flushing hole | Weight approx kg | TIANYUE P/N | |||||||||
| mm | inch | Front | Gauge | Angle | Front | Side | ||||||||
Button bit,Short skirt
| 32 | 1 1/4 | 1×8 | 3×8 | 35° | 1 | 1 | 0.24 | 1431-321122-18/38-45-51 | |||||
| 32 | 1 1/4 | 2×7 | 5×7 | 40° | 1 | 1 | 0.24 | 1431-321122-27/57-45-51 | ||||||
| 33 | 1 19/64 | 2×7 | 4×7 | 40° | 1 | 1 | 0.25 | 1431-331122-27/47-45-51 | ||||||
| 34 | 1 11/32 | 2×7 | 4×7 | 40° | 1 | 1 | 0.29 | 1431-341122-27/47-45-51 | ||||||
| 35 | 1 3/8 | 2×7 | 5×7 | 35° | 1 | 1 | 0.33 | 1431-351122-27/57-45-51 | ||||||
| 35 | 1 3/8 | 2×7 | 5×8 | 35° | 1 | 1 | 0.33 | 1431-351122-27/58-45-51 | ||||||
| 36 | 1 27/64 | 1×8 | 3×9 | 40° | 1 | 1 | 0.36 | 1431-361122-18/39-45-51 | ||||||
| 36 | 1 27/64 | 2×7 | 4×7 | 40° | 1 | 1 | 0.36 | 1431-361122-27/47-45-51 | ||||||
| 36 | 1 27/64 | 2×7 | 5×8 | 35° | 1 | 1 | 0.36 | 1431-361122-27/58-45-51 | ||||||
| 38 | 1 1/2 | 1×9 | 3×9 | 40° | 1 | 1 | 0.39 | 1431-381122-19/39-45-51 | ||||||
| 38 | 1 1/2 | 2×8 | 3×9 | 40° | 1 | 1 | 0.39 | 1431-381122-28/39-45-51 | ||||||
| 38 | 1 1/2 | 2×7 | 3×9 | 35° | 1 | 1 | 0.39 | 1431-381122-27/58-45-51 | ||||||
| 38 | 1 1/2 | 2×7 | 5×8 | 35° | 1 | 1 | 0.39 | 1431-381122-27/59-45-51 | ||||||
| 40 | 1 37/64 | 1×9 | 3×9 | 40° | 1 | 1 | 0.40 | 1431-401122-19/39-45-51 | ||||||
| 40 | 1 37/64 | 2×8 | 3×9 | 40° | 1 | 1 | 0.40 | 1431-401122-28/39-45-51 | ||||||
| 40 | 1 37/64 | 2×9 | 3×9 | 40° | 1 | 2 | 0.40 | 1431-401122-29/39-45-51 | ||||||
| 40 | 1 37/64 | 2×7 | 5×9 | 35° | 1 | 1 | 0.40 | 1431-401122-27/59-45-51 | ||||||
| 40 | 1 37/64 | 2×8 | 5×9 | 35° | 1 | 1 | 0.40 | 1431-401122-28/59-45-51 | ||||||
| 41 | 1 5/8 | 2×7 | 5×9 | 35° | 1 | 1 | 0.41 | 1431-411122-27/59-45-51 | ||||||
Long skirt
| 32 | 1 1/4 | 2×7 | 5×7 | 35° | 1 | 1 | 0.30 | 1435-321122-27/57-45-51 | |||||
| 33 | 1 19/64 | 2×7 | 5×7 | 35° | 1 | 1 | 0.31 | 1435-331122-27/57-45-51 | ||||||
| 33 | 1 19/64 | 2×7 | 6×7 | 40° | 2 | 1 | 0.31 | 1435-331122-27/67-45-51 | ||||||
| 35 | 1 3/8 | 2×7 | 6×7 | 40° | 2 | 1 | 0.35 | 1435-351122-27/67-45-51 | ||||||
| 38 | 1 1/2 | 2×7 | 5×9 | 35° | 1 | 1 | 0.41 | 1435-381122-27/59-45-51 | ||||||
| 41 | 1 5/8 | 2×7 | 5×9 | 35° | 1 | 1 | 0.42 | 1435-411122-27/59-45-51 | ||||||
 | 35 | 1 3/8 | 2×7 | 5×9 | 35° | 1 | 1 | 0.38 | 1435-351125-27/59-45-51 | |||||
| 36 | 1 27/64 | 2×7 | 5×9 | 35° | 1 | 1 | 0.39 | 1435-361125-27/59-45-51 | ||||||
| 38 | 1 1/2 | 2×7 | 5×9 | 35° | 1 | 1 | 0.41 | 1435-381125-27/59-45-51 | ||||||
| 41 | 1 5/8 | 2×7 | 5×9 | 35° | 1 | 1 | 0.42 | 1435-411125-27/59-45-51 | ||||||
| Product | Button Bit |
| Other Names | Button drill bit,Thread button bit,Thread drill bit,Rock drill bit,Top Hammer drill bit,Drill bit,Rock bit,Hard rock dilling tools,Rock dill tool,Rock tools,Top Hammer drilling tools,Mining drill bit |
| Material | 23CrNi3Mo |
| Application | Tunnelling, Mining, Quarrying, Ore Mining,Blasting and Infrastructure Construction,Facedrilling and Bolting, Bench Drilling, Production drilling, Long hole drilling, Drifting. |
| Thread | R25, R28, R32, R35, R38, T38, T45, T51, ST58, ST68, GT60, SR28, SR35... |
| Bit Type | Thread Button Bit,Retrac Button Bit,Reaming Button Bit，Cross Bit，Chisel Bit |
| Skirt Design | Standard skirt, Retrac skirt, Straightrac skirt, Heavy duty skirt |
| Face Design | Flat face, Drop center face, Convex face, Reaming type, Cross type |
| Button Shape | Spherical buttons, Ballistic buttons, Conical buttons, Composite buttons |
| Head Diameter | 28mm~152mm |
| Custom Design | Size,Color |
| Face Design | Application |
|
| Flat face button drill bits are suitable for all rock conditions, especially for the rock with higher hardness and higher abrasiveness. Such as granite and basalt. |
| Convex Face button bits are designed for fast penetration rates in softer rock. |
|
| Drop center button drill bits are mainly suitable for the rock with low hardness, low abrasiveness, and good integrity. The bits can drill straighter holes. |
|
| Normal Skirt For drilling in very hard and abrasive rock formations. |
|
| Retract Skirt For drilling in loose,broken or fissured rock where it is difficult to retract the drill string due to the hole collapse. |
Different Taper Angles:
Taper drill bits come in various taper angles, such as 7 degrees, 11 degrees, or others. The specific angle chosen depends on the type of drilling operation and the rock formation being drilled.
Material and Construction:
Taper drill bits are constructed from durable materials such as high-speed steel (HSS) or tungsten carbide to withstand the abrasiveness of rock formations.
| Button Shape | |
 | R：Round Utility carbide shape. Stong configuration against carbide fracture. |
 | B:Ballistic Higher penetrating carbide shape than Semi ballistic shape. Recommended for soft rock. |
| BB：Semi Ballistic Combined wear resistance and high penetration rate. Recommended for medium-hard rock with moderate abrasitivity. |
 | SA:Spike Highest penetrating carbide shape. Weak configuration against carbide fracture. Recommended for soft to medium-hard work. |
Sizes:
These drill bits are available in different sizes to accommodate various drilling requirements, including different hole diameters.
Applications:
Taper drill bits are widely used in applications where efficient and precise drilling is essential, such as in mining, construction, and geotechnical drilling.
Actual pictures of drill bits
Threaded Drill Bits Retrac Button Bits Reaming Drill Bits Cross Bit Chisel Bit
Bit process flow
About US
Packing
Ease of Removal:
The taper design facilitates the easy removal of the drill bit from the hole after drilling is complete.
Speed and Efficiency:
Taper drill bits are often referred to as "speed bits" due to their efficiency in rapidly penetrating rock formations.
It's crucial to choose the appropriate taper angle and size based on the specific drilling requirements and the type of rock or material being drilled. As with any drilling tool, users should refer to product specifications provided by manufacturers and follow recommended guidelines for optimal performance and safety.
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