HM5C High Air Pressure DTH Button Bit for Water Well & Mining Drilling

The HM5C DTH drill bit is engineered for use with high air pressure DTH hammer systems, delivering stable drilling performance in demanding geological conditions.

It is available in multiple face designs, including concave face and flat face, to adapt to different rock formations and drilling requirements.

The bit is compatible with standard HM5/DHD350 series hammers and supports common drilling sizes ranging from 140mm to 178mm, making it suitable for a wide range of borehole applications.

Each bit is equipped with high-strength tungsten carbide buttons (spherical and ballistic types) to ensure excellent rock-breaking capability and reduced wear in abrasive formations.

Quzhou Mazellion Heavy Industry Technology Co., Ltd. is a professional manufacturer of diesel screw air compressors and mining drilling equipment, serving global mining, quarry, water well drilling, and construction projects. We provide factory-direct supply, stable quality, and full OEM customization to help customers win local markets with better cost performance and reliability.

To start cooperation: send your inquiry → get a tailored technical solution & quotation → confirm order → production & testing → fast shipment → long-term spare parts & technical support. We respond quickly and support you throughout the whole project.

1. Water Well Drilling

The HM5C DTH bit is widely used in water well drilling for residential, agricultural, industrial, and municipal water supply projects. It ensures efficient penetration in medium to hard rock formations.

2. Mining Exploration

Suitable for mineral exploration and blast hole drilling in mining operations. It delivers stable impact energy and high drilling efficiency in abrasive rock conditions.

3. Quarrying Operations

Widely used in granite, limestone, and other quarry sites for blasting hole drilling. It provides high durability and consistent hole quality during continuous operations.

4. Construction & Foundation Engineering

Applied in infrastructure projects such as slope stabilization, anchor drilling, and foundation support systems, ensuring reliable performance in complex geological conditions.

Face Type Selection Guide

Flat Face: Best for hard and abrasive rock formations, higher durability

Concave Face: Better hole straightness and stable drilling in medium-hard rock

Ballistic Buttons: Higher penetration rate in softer formations

Spherical Buttons: Longer wear life in hard rock conditions

1. High Drilling Efficiency in Hard Rock

The HM5C button bit is designed with high-strength tungsten carbide inserts and optimized button layout, delivering strong impact performance under high air pressure. It ensures fast penetration in medium-hard to hard rock formations such as granite and basalt.

2. Excellent Wear Resistance & Long Service Life

Made from premium alloy steel and high-quality tungsten carbide buttons, the HM5C offers outstanding resistance to wear and impact. It significantly extends service life in abrasive ground conditions and reduces bit replacement frequency.

3. Optimized Face Design for Better Rock Breaking

Available in both Flat Face and Concave Face designs, the HM5C ensures efficient energy distribution during drilling. This improves rock fragmentation efficiency and enhances overall drilling performance.

4. Stable Hole Quality & High Straightness

The HM5C maintains excellent drilling stability in high air pressure DTH systems, helping reduce hole deviation and ensuring straighter and more accurate boreholes, especially in deep drilling applications.

5. Efficient Cuttings Removal

Designed with optimized flushing channels and dual air holes, the bit ensures fast removal of rock cuttings. This reduces re-grinding of debris, improves drilling speed, and lowers the risk of hole blockage.

6. Wide Compatibility & Easy Replacement

The HM5C is compatible with most mainstream high air pressure DTH hammer systems such as HM, DHD, and QL series. It can be easily matched with different rigs, hammers, and drill rods without complex adjustments.

Q1: What hammer is compatible with HM5C drill bit?

The HM5C bit is compatible with HM5 and DHD350 series high air pressure DTH hammers.

Q2: What are the available bit sizes?

The standard sizes are 140mm, 146mm, 152mm, 165mm, and 178mm.

Q3: What is the best application for this bit?

It is ideal for water well drilling, mining exploration, quarry blasting, and foundation engineering.

Q4: What face type should I choose?

Concave face is recommended for straight holes, while flat face is better for hard and abrasive rock conditions.

Q5: Is it suitable for deep drilling?

Yes, it is designed for high air pressure systems and performs well in deep borehole applications when paired with suitable DTH hammers and compressors.