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R32 102mm Dome Reaming Button Bit 4 Inch Threaded Rock Drill Bit for Mining Tunneling
| MOQ: | 10 Pieces |
| Price: | Negotiation |
| Standard Packaging: | Export-grade corrugated carton with shock-proof foam insert |
| Delivery Period: | 3 working days for stock, 15-25 days for production |
| Payment Method: | T/T,L/C,PayPal,Western Union |
| Supply Capacity: | 50000 Pieces per Month |
R32 102mm Reaming Button Bit
,R32 102mm Tungsten Carbide Button Bit
,R32 4 Inch Mining Drill Bit
R32 102mm Dome Reaming Button Bit - 4 Inch Threaded Rock Drill Bit
The R32 102mm Dome Reaming Button Bit is a threaded top hammer rock drilling tool designed to enlarge pre-drilled pilot holes to a nominal diameter of 102mm (4 inches). Featuring an R32 threaded connection and dome-shaped tungsten carbide buttons, it is suitable for mining, tunneling, quarrying, underground construction, and long-hole rock drilling applications.
Unlike a conventional button bit used to create an initial borehole, a reaming bit is primarily designed to enlarge a pre-drilled pilot hole to a larger diameter. This makes it suitable for applications where a controlled and accurately sized borehole is required.
How Does the R32 102mm Reaming Bit Work?
- Drill the Pilot Hole: A smaller pilot bit is first used to create the initial hole.
- Connect the Reaming System: The R32 102mm reaming bit is connected to the compatible R32 drilling system.
- Position the Reaming Bit: The reaming bit follows the pilot hole and enters the existing borehole.
- Enlarge the Hole: Rotary and percussive energy is transferred through the drilling system to the carbide buttons, enlarging the pilot hole.
- Flush Cuttings: Flushing air or water helps remove drilling cuttings and maintain drilling efficiency.
Key Product Features
- R32 threaded connection
- 102mm / 4-inch nominal reaming diameter
- Dome-shaped tungsten carbide buttons
- High-strength alloy steel bit body
- Designed for pilot-hole enlargement
- Suitable for top hammer drilling systems
- Efficient rock penetration and hole enlargement
- Multiple carbide button configurations available
- Button layout can be customized according to drilling conditions
Advantages of Dome Button Design
- Stable carbide button geometry
- Good resistance to impact loading
- Suitable for repeated percussive drilling
- Consistent contact with the rock formation
- Suitable for a range of rock formations
- Compatible with heavy-duty top hammer drilling
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | R32 102mm Dome Reaming Button Bit |
| Product Type | Dome Reaming Bit |
| Thread | R32 |
| Nominal Diameter | 102 mm (4 inch) |
| Button Type | Dome / Spherical Carbide Button |
| Button Material | Tungsten Carbide |
| Bit Body | High-Strength Alloy Steel |
| Drilling Method | Top Hammer / Percussive Drilling |
| Main Function | Pilot Hole Enlargement |
| Body Design | Standard / Normal Body |
| Reference Configuration | 16 x 13mm Gauge + 1 x 13mm Front (or 8 x 13mm Gauge + 7 x 13mm Front) |
| Flushing Configuration | Front / Side Flushing Depending on Design |
| Compatible System | R32 Drill Rod / R32 Pilot Drilling System |
| Typical Industries | Mining, Tunneling, Quarrying, Construction |
Button arrangement should be confirmed according to the actual production drawing and customer drilling requirements.
Main Applications
- Mining: Underground mining, bench drilling, development drilling and long-hole drilling applications.
- Underground Long-Hole Drilling: Long-hole drilling systems where a larger final borehole is required.
- Tunneling: Tunnel development, rock excavation and underground infrastructure projects.
- Quarrying: Rock and quarry drilling where pilot-hole enlargement is required.
- Construction: Foundation, excavation and underground construction drilling applications.
FAQ
Q: What is an R32 102mm Dome Reaming Button Bit?
A: It is a top hammer rock drilling tool designed to enlarge a pre-drilled pilot hole to approximately 102mm (4 inches), with an R32 threaded connection and dome-shaped tungsten carbide buttons.
Q: What is the difference between a reaming bit and a standard button bit?
A: A standard button bit creates the initial borehole, while a reaming bit enlarges an existing pilot hole to a larger diameter with a controlled drilling path.
Q: What drill rod is compatible with an R32 102mm reaming bit?
A: It is designed for use with a compatible R32 threaded drilling system, including R32 drill rods and pilot drilling components. The complete system should be selected according to the drilling rig and pilot-hole diameter.
