77mm T38 Thread Button Bits for Heavy Rock Drilling with Durable
Carbide Buttons Conditions
Product Name 77mm T38 Thread Button Bits for Heavy Rock Drilling Conditions
Thread T38
Diameter 77mm
Carbide Tungsten 5×11mm, 8×11mm
Skirt Design Normal
Weight 2.7 kg
Carbide Design Spherical Buttons
Face Design Concave Heart
When your project requires drilling through highly abrasive, hard
rock formations, ordinary button bits simply won't cut it — leading
to wasted time, increased operating costs, and potential unplanned
downtime. Our Henglong 77mm T38 threaded button bit is designed
specifically for heavy-duty rock drilling applications, combining
robust construction, precision engineering, and powerful
performance to tackle your toughest jobs.
T38 Thread: The Core of Heavy - Duty Connections
The T38 trapezoidal thread is the core advantage of this drill bit,
designed for high - torque, high - impact drilling applications:
- Secure, Non-Slip Connection: Unlike standard threads, the T38's symmetrical trapezoidal profile
creates a tight, interlocking fit with the matching drill rod. This
eliminates thread slippage, even under extreme rotational torque
and repeated impacts, ensuring maximum energy transfer from the
drill rig to the drill bit working face.
- Compatibility with Heavy-Duty Equipment: Fully compatible with mainstream heavy - duty rock drilling rigs
and surface drill rigs (such as Atlas Copco and SandV). Ideal for
large-scale open - pit mining, deep tunnel excavation, and quarry
blasting operations requiring stable deep - hole drilling.
77mm Drilling Diameter: Optimal Performance Balance
The 77mm diameter achieves a perfect balance between drilling speed
and hole integrity in hard rock applications. The optimized body
geometry of the drill bit minimizes "bit deviation" on uneven rock
surfaces, reducing the need for rework and ensuring accurate
implementation of the blasting pattern.
Durable Construction Features
- High-quality carbide buttons
- Reinforced drill body
- High-flow flushing holes
Extended Service Life
The wear-resistant carbide teeth reduce the frequency of drill bit
replacement, lowering the drilling cost per meter and improving
operational efficiency.
For customized solutions, please contact our technical team.
