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Custom Self Drilling Arch Bit Manufacturer in China

As a leading custom self-drilling arch bit manufacturer in China, we specialize in producing high-quality bits for a variety of ground formations. Our expert team leverages advanced manufacturing techniques to create custom solutions tailored to your project’s specific needs, ensuring superior performance and durability in even the most challenging conditions.

Sinodrills - Your Trusted Self Drilling Arch Bit Manufacturer from China

Sinodrills is your trusted partner for self-drilling arch bits, proudly manufactured in China. We combine precision engineering with premium materials to produce durable bits that offer exceptional performance in loose to dense soil. Count on our expertise and reliable supply chain to provide the ideal bit for your project, ensuring efficiency and success every time.

self drilling arch bit

Self Drilling Arch Bit Design

The Self-Drilling Arch Bit is specifically designed to handle loose to dense soil or sand formations. Its unique, arched cutting face provides exceptional directional stability and a strong cutting force. This design is crucial for ensuring a straight borehole in granular ground, preventing the bit from spiraling or deviating. It is a reliable tool for a wide range of applications in civil engineering.

Self Drilling Arch Bit Benefits

  • Exceptional Directional Stability: The arch-shaped cutting face helps to guide the bit, ensuring it maintains a straight and true path. This is crucial in granular or mixed-ground formations where a standard bit might be prone to deviating or “walking” off course.

  • Superior Cutting Force: The design concentrates the drilling force along the arched cutting edges, allowing for more aggressive and efficient penetration through dense soil and compacted sand.

  • Reduced Friction: The shape of the bit minimizes contact with the borehole wall, which helps to reduce friction and wear. This not only extends the bit’s lifespan but also contributes to faster drilling rates.

  • Versatility in Transition Zones: It excels in ground that transitions from loose to dense conditions, providing a stable and reliable solution where other bit types might struggle to maintain performance.

  • Cost-Effective: While highly effective in specific conditions, the hardened steel arch bit is generally more economical than tungsten carbide alternatives, making it a great choice for projects that don’t require the extreme durability of TC bits.

self drilling arch bit benefits

Various Self Drilling Arch Bit

3 wing self drilling arch bit

3 wing self drilling arch bit

We offer a specialized self-drilling arch bit with 3 wings, designed for enhanced stability and cutting efficiency in loose to dense ground formations. This unique three-wing configuration provides superior cutting action and improved flushing, ensuring a straighter borehole and a more efficient installation. It’s an ideal solution for projects requiring precision and reliability in challenging soil conditions.

self drilling anchor cross drill bit

self-drilling anchor cross drill bit

We offer a range of high-quality self-drilling anchor cross drill bits, engineered for exceptional performance in loose to medium dense ground formations. The classic cross-shaped design ensures optimal stability and efficient material removal, making it a versatile and reliable choice for a variety of projects. Our bits are made from hardened steel to provide the perfect balance of durability and cost-effectiveness for your drilling needs.

self drilling anchor arch drill bit

self-drilling anchor arch drill bit

We offer a high-performance self-drilling anchor arch drill bit, expertly engineered for projects in loose to dense soil and sand formations. Its unique arched cutting face provides exceptional directional stability, ensuring a perfectly straight borehole even in transitional ground. This design, combined with our premium materials, guarantees a reliable and efficient drilling process, securing your anchor with precision.

Various Self Drilling Arch Bit

ec self drilling arch bit

EC Self Drilling Arch Bit

The EC self-drilling anchor bit is a forged, all-steel arch drill bit. Its asymmetrical design is engineered for efficiency in unconsolidated ground, including soft soil and small stones. It delivers faster penetration rates in softer rock formations, while its arched shape provides exceptional stability and cutting force, ensuring a straight and clean borehole in challenging transitional geology.

ecc self drilling arch bit

ECC Self Drilling Arch Bit

The ECC self-drilling anchor bit is a tungsten carbide (TC) arch bit designed for medium fractured rock formations. It combines the stability of an arch design with the superior durability of TC inserts. This allows it to efficiently drill through and anchor in challenging, abrasive rock, ensuring a straight borehole and an extended bit lifespan.

Customize Your Desired Self Drilling Arch Bit

Material Selection

We select the optimal material for your bit based on the ground conditions. For soft soil, we use hardened steel, which is cost-effective and durable. For projects in medium-hard rock, we recommend tungsten carbide (TC) inserts to ensure superior wear resistance and a longer lifespan.

Cutting Face Design

We can customize the arch’s cutting face to enhance performance. By modifying the arch’s curvature and angles, we can optimize the bit for different soil densities, from loose sand to dense clay. This ensures maximum penetration and directional stability, giving you a straighter borehole.

Flushing Holes

We can engineer the flushing holes to your specifications. Their number, size, and location are crucial for efficient removal of cuttings and for proper grout injection. We customize them to match your drilling and grouting system, preventing blockages and ensuring a strong bond.

Thread Connection

We ensure the self drilling arch bit’s thread connection is compatible with your specific anchor bar. We can produce custom threads in various sizes to fit different drilling rigs and anchor systems. This guarantees a secure and stable connection, preventing bit loss and ensuring smooth installation.

what is self drilling arch bit?

A self-drilling arch bit is a specialized component of a self-drilling anchor system, designed to handle a specific range of ground conditions. Unlike other bits, its cutting face features a distinctive arched shape. 

This design is engineered to provide exceptional directional stability and a powerful cutting force, making it particularly effective for drilling through loose to dense soil and sand formations. 

The arch bit ensures a straight and stable borehole, which is crucial for the secure installation of the hollow anchor bar and the subsequent grouting process. Depending on the ground’s hardness, these bits are available in hardened steel for softer soil (EC) or with tungsten carbide inserts for medium-hard fractured rock (ECC).

what is self drilling arch bit used for ?

A self-drilling arch bit is a specialized tool used for ground engineering and construction projects where the primary objective is to install self-drilling anchors in specific ground conditions. Its unique design is optimized for environments that are difficult for other bits to navigate effectively. The primary applications for a self-drilling arch bit include:

  • Loose to Dense Soil and Sand Formations: The arched cutting face provides superior directional stability and cutting force, ensuring a straight and stable borehole in granular, unconsolidated, or compacted soils.

  • Transitional Ground: It is highly effective in areas where the ground composition shifts between soft soil and more dense or compacted layers, providing a reliable solution that maintains drilling efficiency.

  • Civil Engineering and Construction: It is widely used in applications like slope stabilization, tunneling, and foundation support where secure and precise anchoring is required in challenging soil or rock.

How many types of self drilling arch bits are there?

There are two primary types of self-drilling arch bits, each defined by the material of its cutting face and the ground it’s designed to drill. The choice between them depends entirely on the hardness and abrasiveness of the soil or rock formation you’re working in.

  • Hardened Steel Arch Bit (EC): This type is made from hardened steel and is specifically designed for drilling in loose to dense soil or sand formations. It offers excellent directional stability and a strong cutting force in these less abrasive ground conditions.

  • Tungsten Carbide (TC) Arch Bit (ECC): This bit features tungsten carbide inserts embedded in the tip. It’s used for anchoring in medium-hard fractured rock formations, providing the superior durability and wear resistance needed to efficiently drill through solid rock that would quickly wear out a hardened steel bit.

How to use self drilling arch bits?

Using a self-drilling arch bit is a straightforward process that is integrated into the self-drilling anchor installation. The bit, which is a one-time use component, is threaded onto the end of a hollow anchor bar. 

This assembly is then connected to a drilling rig. As the rig rotates, the bit simultaneously drills a borehole while the hollow bar is driven into the ground behind it. Once the desired depth is reached, grout is injected through the hollow bar, exiting through the bit’s flushing holes to fill the borehole and create a secure bond. 

The process is streamlined to avoid the need for separate drilling and anchor installation steps, making it highly efficient for a variety of ground conditions.

  • Attachment: The self-drilling arch bit is attached to a hollow anchor bar.

  • Drilling: The drilling rig rotates and pushes the anchor bar, with the arch bit at its tip, into the ground.

  • Grouting: Once the anchor is at the desired depth, grout is pumped through the hollow bar and exits through the bit, filling the hole and securing the anchor.

  • Finalization: The bit remains in the ground as a sacrificial component, completing the all-in-one installation process.

why choose our self drilling arch bits?

When you choose our self-drilling arch bits, you are selecting a solution designed for superior performance and reliability in specific ground conditions. We use high-grade materials and precision manufacturing to produce bits that offer exceptional directional stability and a powerful cutting force, ensuring a straight and secure borehole in even the most challenging loose to dense soil and sand formations. 

Our commitment to quality means our bits provide an extended lifespan, reducing the need for frequent replacements and ultimately saving you time and money on your project.

  • Superior Stability: Our arch bits are engineered to prevent veering, guaranteeing a straight borehole.

  • Efficient Performance: The optimized cutting face ensures fast and effective drilling in dense soil.

  • Premium Quality: We use durable materials, including hardened steel and tungsten carbide, for a longer product lifespan.

  • Cost-Effective: By combining efficiency and durability, our bits lower your overall project costs.

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All-in-one Self Drilling Arch Bit Solutions for Your Project

We offer all-in-one self-drilling arch bit solutions tailored to your project. Our bits are engineered for seamless integration with your drilling system, providing superior performance in loose to dense soil and sand. By combining the drill bit and anchor in a single, efficient process, we simplify your operations and ensure a precise, reliable installation every time.

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