Tapered button bit as small hole bit is different with thread button bit as long hole bit to use taper match with bit with rod to be used for air leg or hand held jack hammer driller in quarrying and mining.
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Product Specifications
Connect shank Size: Φ19, Φ22, Φ25 at most
Bit Diameter: 32mm, 34mm, 36mm, 38mm, 40mm
Tapered connection: 6 degree, 7 degree, 11 degree, 12 degree etc.
Material: Alloy Steel Bar 45CrNiMoV, Tungsten Carbide Tips YK05 or T6.
Button Shape: Ballistic Face Type: Flat Face; Bit Body: Standard
Qty of button: 5, 7, 8 pcs
Main markets: India, Saudi, Chile, South Africa
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4°46' Taper Angle Data
| Diameter |
Length |
No. of buttons |
Buttons x Diameter |
Gauge Angle |
Buttons Angle |
Flushing hole |
Weight (kg) |
| mm |
inch |
mm |
inch |
gauge |
center |
Side |
Center |
| 36 | 1 13/32" | 50 | 1 31/32" | 7 | 5x7 | 2x7 | 35° | - | 1 | 2 | 0.2 |
| 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 5/8" | 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 |
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7° Taper Angle Data
| Dia(mm) |
Dia(inch) |
Len(mm) |
Len(inch) |
Buttons |
Gauge |
Center |
G-Angle |
B-Angle |
Side H |
Center H |
Wt(kg) |
| 30 | 1 3/16" | 80 | 3 5/32" | 7 | 5x6 | 2x7 | 35° | 15° | 2 | 1 | 0.2 |
| 32 | 1 1/4" | 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 3/8" | 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 5/8" | 80 | 3 5/32" | 7 | 5x9 | 2x8 | 40° | 15° | 1 | 1 | 0.4 |
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11° Taper Angle Data
| Dia(mm) |
Dia(inch) |
Len(mm) |
Len(inch) |
Buttons |
Gauge |
Center |
G-Angle |
B-Angle |
Side H |
Center H |
Wt(kg) |
| 32 | 1 1/4" | 55 | 2 5/32" | 8 | 6x7 | 2x7 | 39° | 15° | 1 | 1 | 0.2 |
| 32 | 1 1/4" | 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 |
| 38 | 1 1/2" | 50 | 1 31/32" | 7 | 5x9 | 2x7 | 35° | - | 1 | 1 | 0.3 |
| 41 | 1 5/8" | 50 | 1 31/32" | 7 | 5x9 | 2x7 | 35° | - | 2 | 1 | 0.3 |
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12° Taper Angle Data
| Dia(mm) |
Dia(inch) |
Len(mm) |
Len(inch) |
Buttons |
Gauge |
Center |
G-Angle |
B-Angle |
Side H |
Center H |
Wt(kg) |
| 27 | 1 1/16" | 50 | 1 31/32" | 6 | 4x8 | 2x6 | 40° | 15° | 1 | 1 | 0.2 |
| 28 | 1 3/32" | 50 | 1 31/32" | 4 | 3x7 | 1x7 | 20° | - | 1 | 1 | 0.1 |
| 32 | 1 1/4" | 55 | 2 5/32" | 7 | 5x7 | 2x7 | 35° | - | 1 | 2 | 0.3 |
| 32 | 1 1/4" | 71 | 2 25/32" | 7 | 5x7 | 2x7 | 35° | - | 1 | 1 | 0.3 |
| 33 | 1 5/16" | 71 | 2 25/32" | 9 | 6x7 | 3x7 | 40° | 20° | 3 | - | 0.3 |
| 38 | 1 1/2" | 71 | 2 25/32" | 7 | 5x9 | 2x7 | 35° | - | 1 | 1 | 0.4 |
Frequently Asked Questions
What is a tapered button bit?
A tapered button bit is a small hole drilling tool used primarily in mining and quarrying. It features a tapered connection that matches with a drill rod, suitable for air-leg or hand-held jackhammer drillers.
Which taper angles are commonly available?
Common taper angles include 4°46', 6°, 7°, 11°, and 12°. The selection depends on the specific drill rod and the hardness of the rock being drilled.
What materials are used for these drill bits?
High-quality tapered button bits are typically manufactured from 45CrNiMoV alloy steel bars with Tungsten Carbide tips (YK05 or T6) for maximum durability and penetration.
What is the difference between short and long skirt bits?
Short skirt bits are generally used in stable rock conditions, while long skirt bits provide better stability and straighter holes in fractured or softer rock formations.
How many buttons do these bits typically have?
Depending on the diameter and the design, tapered button bits usually feature 5, 7, 8, or 9 buttons distributed between the gauge and the center of the bit face.
Are these bits compatible with 22mm hex rods?
Yes, most tapered button bits are specifically designed to be used with 22 mm (7/8") or 25 mm (1") hexagonal drill rods commonly found in mining equipment.
KAT DRILLING
