T38 76mm Flat Face Normal Body Dome Button Drill Bit

The T38 76mm flat face normal body dome button drill bit is a threaded rock drilling bit designed for efficient and reliable drilling in mining, quarrying, tunnelling, construction and general rock excavation applications. Featuring a 76mm drilling diameter, T38 threaded connection, flat face design and normal body construction, this drill bit provides a balanced cutting structure for rock penetration and wear resistance.

Product Overview

Equipped with dome-shaped tungsten carbide buttons in a 12mm x 8 + 12mm x 4 configuration, the bit maintains a stable cutting structure during drilling. The flat face design supports consistent contact between the carbide buttons and the rock formation, while the dome buttons withstand repeated impact and abrasion in demanding rock conditions. The T38 thread connection is designed for use with compatible T38 drill rods and rock drilling equipment.

Main Applications

• Mining & Mineral Extraction: Production drilling in underground and surface mining operations.
• Quarrying & Aggregate Production: Blast-hole drilling in granite, limestone and marble quarries.
• Tunnelling: Precision drilling for tunnel development and underground construction.
• Construction Drilling: Foundation and anchor hole drilling in construction projects.
• Bench & Production Drilling: General surface and underground rotary-percussive rock drilling.

Key Features & Advantages

• T38 Threaded Connection: Compatible with matching T38 drill rods and drilling systems, providing a secure threaded connection during drilling.
• 76mm Drilling Diameter: A commonly used size for applications requiring a relatively compact borehole while maintaining good drilling efficiency.
• Flat Face Design: Provides a stable cutting profile and supports consistent contact between the carbide buttons and the rock formation.
• Dome Tungsten Carbide Buttons: Twelve dome buttons arranged as 12mm x 8 + 12mm x 4 provide a balanced cutting pattern for impact resistance and wear performance.
• Normal Body Construction: A conventional configuration suitable for general-purpose rock drilling applications.

Product Specifications

FAQ

Q1: What is a T38 76mm drill bit used for?
A: It is mainly used for rotary-percussive rock drilling in mining, quarrying, tunnelling, construction and rock excavation. Its 76mm diameter is suitable for applications requiring a relatively compact borehole with efficient rock penetration.

Q2: What is the button configuration of the T38 76mm drill bit?
A: It uses dome-shaped tungsten carbide buttons in a configuration of 12mm x 8 + 12mm x 4, giving a total of 12 carbide buttons. The arrangement provides a balanced cutting structure for rock penetration and wear resistance.

Q3: Which drill rod is compatible with a T38 76mm button bit?
A: It is designed for use with a compatible T38 threaded drill rod. Matching the drill bit and drill rod thread helps ensure a secure connection and efficient transmission of impact energy during drilling.

Q4: What is the difference between a flat face and a dome button drill bit?
A: Flat face describes the overall geometry of the bit's front cutting face, while dome button describes the shape of the tungsten carbide inserts. A T38 76mm bit can therefore have a flat face combined with dome-shaped carbide buttons to provide a stable cutting structure and good impact resistance.

Q5: Is the T38 76mm dome button drill bit suitable for hard rock?
A: Yes. It can be used in medium to hard rock formations, depending on the specific rock characteristics and drilling conditions. Actual performance depends on rock hardness and abrasiveness, impact energy, rotation speed, feed pressure and flushing efficiency.