Product Overview
The QL60 DTH drill bit is designed for QL60 down-the-hole hammer, widely used in large diameter drilling applications such as mining, quarrying, water well drilling, and infrastructure projects.
It delivers high penetration rate, excellent wear resistance, and stable hole quality, making it ideal for medium to hard rock formations, including granite, basalt, and limestone.
Engineered with high-grade tungsten carbide buttons and heat-treated alloy steel body, QL60 bits ensure long service life and consistent drilling performance in demanding conditions.
Key Highlights
- Up to 20% faster penetration
- Suitable for 165–203 mm hole drilling range
- High performance in hard rock formations
- Stable hole straightness & drilling accuracy
- Lower cost per meter in long drilling projects
Not Sure if QL60 Is the Right Choice for Your Project?
Every drilling condition is different. Share your hole diameter, rock formation, and drilling requirements, and our experts will help you confirm whether the QL60 DTH drill bit is the best fit for your application.
What Makes QL60 DTH Drill Bit Different?
QL60 DTH bits are engineered for high-efficiency rock fragmentation in medium to large diameter drilling operations. Compared with smaller QL models, QL60 provides stronger impact distribution and improved stability in deep hole drilling.
Our QL60 series DTH bits are precision-manufactured from high-grade alloy steel and equipped with top-quality spherical or ballistic tungsten carbide buttons. Designed specifically for QL60 shank hammers, these 6-inch bits deliver exceptional energy transfer, high drilling speed, and outstanding durability in medium to hard rock formations.
Key Advantages
QL60 Bit Design & Structure
QL60 DTH drill bits are built with an optimized structural design to ensure maximum drilling efficiency and durability.
Core Components
- Heat-treated alloy steel body
- Premium tungsten carbide buttons
- Optimized flushing channels
- Precision-machined shank interface
Available Face Designs
| Face Type | Best Application |
| Flat Face | Hard rock, stable formations |
| Concave Face | Medium to hard rock drilling |
| Convex Face | Faster penetration in medium formations |
| Drop Center | Improved hole stability |
| Deep Concave | Deep hole drilling stability |
Ready to Match the Right QL60 Bit to Your Drilling Needs?
Different bit structures and designs directly impact drilling efficiency and cost per meter. Let our team help you select the optimal QL60 size and configuration based on your hole diameter, rock formation, and project requirements.
QL60 Available Sizes & Specifications
QL60 bits are designed for large diameter drilling operations.
Available QL60 Size Ranges
| Nominal diameter (mm) | Side teeth | Middle teeth | Connection with DTH Hammer | Weight (kg) | Specification |
| φ165 | 8×φ18 | 8×φ16 | QL60 | 23.8 | KQZG165P |
| φ165 | 8×φ18 | 4xφ16+4×φ16 | QL60 | 23.6 | KQZG165T |
| φ165 | 8×φ18 | 4xφ16+4×φ15 | QL60 | 23.3 | KQZG165A |
| φ171 | 8×φ18 | 6xφ16+4×φ16 | QL60 | 24.0 | KQZG171A |
| φ178 | 8×φ18 | 6xφ16+4×φ16 | QL60 | 24.6 | KQZG178A |
| φ190 | 10×φ18 | 8xφ16+5×φ16 | QL60 | 26.1 | KQZG190A |
General Technical Specifications
| Parameter | Specification |
| Bit Type | Medium and high-pressure DTH bit |
| Shank Type | QL60 |
| Hole Diameter Range | 165 mm – 203 mm
|
| Button Material | Tungsten Carbide |
| Skirt Body Material | High-strength alloy steel |
| Face Design Options | Flat / Concave / Convex / Drop Center |
| Button Types Options | Spherical (Domed)/ Ballistic/ Semi-Ballistic |
| Flushing Holes | Optimized flushing hole design for efficient cuttings removal |
| Heat Treatment | Advanced heat treatment for enhanced wear resistance and fatigue strength |
| Rock Hardness | Medium to Hard Rock |
Custom Options
- Custom diameter design
- Face design optimization
- Button shape selection
- OEM branding available
Need Help Selecting the Right QL60 Configuration?
Not sure which QL60 bit design fits your drilling conditions?
Share your rock type, hole diameter, and drilling depth, and our technical team will recommend the most efficient configuration.
Where QL60 DTH Drill Bits Are Used
QL60 bits are designed for high-demand drilling environments requiring stability and efficiency in large diameter holes.
Why Customers Choose Us？
Choosing the right drilling tool supplier directly impacts drilling efficiency, project cost, and operational stability. We are committed to delivering high-performance QL60 DTH drill bits that customers can rely on in demanding drilling environments worldwide.
Every QL60 DTH drill bit is manufactured using carefully selected materials and controlled production processes to ensure long service life and stable performance.
- High-grade alloy steel for superior impact resistance
- Premium tungsten carbide buttons for extended wear life
- Strict quality inspection at every production stage
- Consistent performance in hard and abrasive rock formations
Our QL60 DTH bits are designed to ensure stable compatibility and smooth operation with major DTH hammer systems, reducing downtime and improving drilling efficiency.
- Accurate shank machining for stable fitting
- Optimized energy transfer between hammer and bit
- Reduced vibration and improved hole straightness
We understand that drilling projects require timely delivery and reliable technical assistance. Our global service system ensures fast response and efficient support.
- Fast production lead time for urgent orders
- Global logistics support and export experience
- Professional technical guidance for bit selection
- Responsive customer support for drilling optimization
We provide cost-effective solutions without compromising quality, helping customers reduce overall drilling costs.
- Optimized cost per drilled meter
- Bulk order pricing support
- Long-term partnership advantages
Precision Manufacturing for Reliable Performance
Manufacturing & Quality Control
QL60 DTH bits are manufactured under strict quality standards to ensure durability, precision, and consistent drilling performance in demanding environments.
Quality Assurance Process
✔ CNC precision machining for dimensional accuracy
✔ Controlled heat treatment for enhanced strength and fatigue resistance
✔ Tungsten carbide button quality inspection
✔ Strict tolerance and alignment testing
✔ Final performance and durability verification
These processes ensure every bit delivers stable performance, long service life, and reliable drilling results.
Reliable Manufacturing & Delivery Capability
Stable Supply for Global Drilling Projects
We provide consistent production capacity and dependable global supply chain support for QL60 DTH drill bits, ensuring your projects run without interruption.
Supply Advantages
- Fast production lead time for standard and custom orders
- OEM & private label manufacturing available
- Strong bulk order production capability
- Stable quality across all production batches
- Global shipping support to mining and construction markets
With years of manufacturing experience in drilling tools, we focus on delivering reliable quality, consistent performance, and long-term value for global drilling contractors and distributors.
Ready to Improve Your Drilling Efficiency?
Get high-performance QL60 DTH drill bits tailored to your drilling conditions.
Contact our engineering team for pricing, technical support, and customization options.
FAQ About
QL60 DTH Drill Bits
QL60 DTH drill bits are used for large diameter rock drilling applications, including mining, quarrying, and water well drilling.
QL60 bits are designed for QL60 DTH hammers, commonly used in medium to high-pressure drill rigs.
QL60 bits typically cover 165 mm to 203 mm hole diameters.
QL60 bits are suitable for granite, basalt, limestone, marble, and other medium to hard rock formations.
Selection depends on rock hardness, hole diameter, compressor pressure, and drilling depth.
The selection of the DTH drill bit face type depends on rock hardness, abrasiveness, and drilling conditions.
- Convex Face → Best for soft to medium rock formations. It provides faster penetration and efficient cutting performance in materials such as limestone and sandstone.
- Concave Face → Suitable for medium to hard rock conditions. It offers a good balance between penetration rate and hole stability.
- Flat Face → Recommended for hard and highly abrasive rock such as granite and basalt. It provides higher durability and better wear resistance.
- Deep Concave / Drop Center Design → Ideal for deep hole drilling where improved hole straightness and stability are required.
In summary:
Choose convex for speed, concave for balance, and flat face for maximum durability.
Yes, customization options include diameter, button type, face design, and OEM branding.
The service life of a QL series DTH drill bit varies depending on rock conditions, drilling parameters, and operating practices.
In general, QL bits are designed for long service life in demanding drilling environments, but actual performance depends on application conditions.
Key factors affecting bit life include:
- Rock hardness and abrasiveness
- Air pressure and flushing efficiency
- Weight on bit (WOB) and rotation speed
- Button type and face design selection
To maximize service life, it is recommended to match the bit design with rock conditions and maintain proper drilling parameters during operation
Get a Tailored QL60 Drilling Solution
Every drilling project is different.
Send us your requirements, and we will provide a custom QL60 DTH bit solution optimized for your rock conditions and drilling goals.
Provide us with the following information:
- DTH hammer model
- Required hole diameter
- Rock formation
- Compressor pressure and air volume
Our technical team will recommend the most suitable QL60 DTH drill bit configuration for your drilling project.
Send us your requirements through the contact form to receive expert advice and a quotation.
