High quality T51 retractable button drill bit Retract Rock Drilling Bit
Button bit is well known for its high wear resistance on medium-hard to hard abrasive rock formations (between 200 Mpa to 260 Mpa compressive strength).Featuring spherical tungsten carbide inserts that is known to have strong configuration against carbide fracture.
• Recommended for eliminating hole deviation
• Widely used drifting and tunneling
• Bit face design is ideal for medium-hard to hard abrasive rock
• Color: Green,Blue or Based on Customer requirements
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Product Name: |
different rock hardness drilling button bit |
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Description: |
For different rock hardness mining,tunneling,quarrying button bit Button bit Made with high quality of best quality alloy steel bar and tungsten carbide, through heat treatment. |
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Material: |
Alloy steel bar and tungsten carbide bit |
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MOQ: |
trial order 1-5pcs |
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Body Type |
Normal type and retract type |
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Thread type |
R25,R28,R32,R38,T38,T45,T51,ST58,ST68 |
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Diameter |
32mm-152mm |
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Button bit shape |
Spherical and Ballistic |
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Face shape |
Flat shape and Drop-center shape |
Button bit and Insert types
Spherical Button Characteristics
1.Universal button
2.Good wear resistance
3.Best suited for hard ground
4.27000-48000PSI(180 to 320Mpa)
5.Suited for abrasive to very abrasive drilling conditions
Ballistic Button Characteristics
1.Fast Penetration
2.Best suited for soft rock
3.10000-20000PSI(70 to 140Mpa)
4.Suited for non-abrasive drilling conditions
Applications of rock drilling tools
• Underground mining
• Tunneling,quarrying
Quick detail of retract button bit:
• Widely used drifting and tunneling
• Bit face design is ideal for soft to medium rock formations
• With retrac wings to help guide the bit in and out of the hole
• Effective in straight hole drilling
Specification of retrac button bits
| Part Number | Product Code and Brief Description | Bit Diameter (mm) | Bit Diameter (inch) | Front Buttons (No. x mm) | Gauge Buttons (No. x mm) | Angle | Front Flushing Holes | Side Flushing Holes | Weight (kg) |
| 4148300521 | R945-R32-S, R32 Retrac Button Bit, Spherical Buttons | 45 | 1 7/9 | 3x8 | 6x9 | 40° | 3 | - | 1.1 |
| 4148300522 | R948-R32-S, R32 Retrac Button Bit, Spherical Buttons | 48 | 1 8/9 | 3x9 | 6x10 | 30° | 3 | - | 1.2 |
| 4148300523 | R951-R32-S, R32 Retrac Button Bit, Spherical Buttons | 51 | 2 | 3x9 | 6x10 | 30° | 3 | - | 1.4 |
| 4148300524 | R948-R32-S, R32 Retrac Button Bit, Spherical Buttons | 64 | 2 1/2 | 3x10, 1x10 | 6x11 | 35° | 3 | - | 2.2 |
| 4148300525 | R1264-R32-S, R32 Retrac Button Bit, Spherical Buttons | 64 | 2 1/2 | 4x10 | 8x10 | 40° | 2 | - | 2.2 |
| 4148300526 | R1376-R32-S, R32 Retrac Button Bit, Spherical Buttons | 76 | 3 | 4x11, 1x11 | 8x11 | 35° | 4 | 1 | 3.5 |
| 4148300609 | R948-R32-S, R32 Retrac Button Bit, Spherical Buttons | 48 | 1 8/9 | 3x8 | 6x10 | 40° | 3 | - | 1.2 |
| 4148300610 | R951-R32-S, R32 Retrac Button Bit, Spherical Buttons | 51 | 2 | 3x9 | 6x10 | 35° | 3 | - | 1.4 |
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