138mm DHD3.5-138 Concave DTH Drill Bit Reinforced with Embedded PDC Cutters for Quarrying & Mining
Code No.: DHD3.5-138
Diameter: 139 mm
Inserts: PDC cutters
Face Design: Concave
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138mm DHD3.5-138 Concave DTH Drill Bit Reinforced with Embedded PDC Cutters for Quarrying & Mining :
From standard cutters to custom drilling solutions, we provide the industry's most reliable PDC products for extreme conditions.
Product Specification
· Bit Type: DTH Hammer Bit
· Code No.: DHD3.5-138
· Diameter: 138 mm
· Shank Type: DHD3.5
· Air Holes: 2
· Gauge Buttons: 8 × φ17mm
· Face Buttons: 7 × φ14mm
· PDC cutter Type: Dome / Hemispherical PDC Cutters
· PDC Cutter Function: Improve Wear Resistance & Improved Hole Quality
· Face Design: Concave
· Application: Quarrying, Mining
The DHD3.5-138 is widely used in quarrying, open-pit mining, blast hole drilling, and infrastructure rock excavation. Its embedded PDC cutter reinforcement helps maintain hole quality while extending drill bit life in abrasive and high-impact drilling environments.
Product Description
The 138mm DHD3.5-138 DTH drill bit is developed for quarrying and mining applications where drilling stability and impact resistance are essential. Reinforced with embedded premium PDC cutters, it combines a concave face profile with dome and hemispherical carbide buttons to improve gauge protection, reduce wear, and maintain reliable drilling performance in abrasive rock formations.
Embedded PDC Cutters for Small-Diameter Precision Drilling
The DHD3.5-138 DTH drill bit features a hybrid cutting structure that combines premium tungsten carbide buttons with strategically embedded PDC cutters. The embedded PDC cutters reinforce the gauge area, minimizing peripheral wear while maintaining consistent hole diameter throughout extended drilling operations.
Designed with a concave face profile, the bit provides smooth cuttings evacuation and improved drilling stability. The combination of dome and hemispherical carbide buttons offers outstanding impact resistance and balanced rock-breaking performance, making it suitable for repeated heavy-duty drilling in quarrying and mining environments.
This optimized design enhances drilling efficiency, extends service life, and reduces maintenance requirements, helping contractors achieve lower drilling costs and more consistent production.
Key Features
· Reinforced with embedded premium PDC cutters
· Hybrid carbide button and PDC cutter design
· Concave face for improved drilling stability
· Dome and hemispherical carbide buttons for high impact resistance
· Enhanced gauge protection and reduced wear
· Stable penetration in abrasive rock formations
· Long service life with lower operating costs
· Ideal for quarrying and mining applications
ZZBetter: Your Leading PDC cutters Manufacturer & Supplier
You get high-quality PDC cutters to meet different applications.
You get to choose from our collection of PDC cutters made from different materials.
You will enjoy the full benefits and advantages of using our primary products.
You will experience the cutting-edge technology that we are using to craft our PDC cutters.
You get a guarantee that your purchase has no defects and flaws.
You are doing business with the leading PDC cutters supplier in China.
ZZ Better can handle maximum orders to help you grow your business.
Send your request or inquiry if you want a customization of PDC cutters.
Using the right PDC cutters can help you do the work more easily!
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Zhuzhou Better Tungsten Carbide Co., Ltd
ADDRESS：Huanghe North Road, Tianyuan District, Zhuzhou City, Hunan Province, China, 412000
Tel：0086 73128705418
Phone：0086 13647338188
Fax：0086 073128510897
Email：PDC@drillbetter.com
Whatsapp: 008618173362360
