QL Series High Air Pressure DTH Hammer for Mining and Water Well Drilling|110-254mm Hole Range

The QL Series High Air Pressure DTH Hammer is a medium-to-heavy duty down-the-hole drilling tool designed for efficient drilling in mining, quarrying, water well drilling, and construction foundation engineering applications.

As one of the most widely used DTH hammer systems in the global drilling market, the QL series offers a balanced combination of high impact energy, stable performance, and wide compatibility. It is designed to operate under medium to high air pressure conditions, making it suitable for both standard and demanding rock drilling environments.

The QL Series includes multiple models such as QL40, QL50, QL60, QL80, QL40A, QL50A, QL680, and QL880, covering a wide drilling range from 110 mm to 254 mm. Each model is engineered with optimized internal airflow channels to ensure efficient energy transfer, reduced air consumption, and improved penetration rate.

Manufactured from high-strength alloy steel with precision heat treatment, the QL series delivers excellent wear resistance and long service life even under continuous heavy-duty drilling operations. The internal piston system ensures stable impact frequency and consistent drilling performance in various rock formations.

Depending on model configuration and working conditions, the QL Series is compatible with API 2 3/8", API 3 1/2", and API 4 1/2" drill rod systems, making it highly adaptable to different drilling rigs and field applications.

This series is widely recognized as a cost-effective and reliable solution for contractors who require stable performance and easy maintenance in medium-to-large diameter drilling projects.

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.

Not sure which DTH hammer series fits your job?Tell us your required hole diameter and depth, our engineers will recommend the best-matched hammer series and model for your rig and formation.

1. Mining Exploration & Blast Hole Drilling

The QL Series is widely used in open-pit mining operations for blast hole drilling. It provides stable impact energy and high penetration efficiency in hard rock formations.

2. Water Well Drilling

Suitable for medium and deep water well drilling projects in agriculture, municipal supply, and industrial applications. It ensures consistent performance in various geological conditions.

3. Quarrying Operations

Ideal for granite, basalt, limestone, and other hard rock quarry drilling. The QL series delivers high drilling efficiency with reduced operational cost.

4. Construction Foundation Engineering

Used in slope stabilization, anchor drilling, bridge foundation, and infrastructure projects. It performs well in complex and mixed geological formations.

5. Geothermal Drilling

Suitable for geothermal energy projects requiring stable and continuous deep drilling performance in high-temperature rock formations.

Wide model range covering multiple drilling applications

High impact energy for efficient rock breaking

Stable performance in medium and hard rock formations

Optimized air distribution system reduces air consumption

Compatible with multiple international drill rod standards

Heat-treated alloy steel for extended service life

Suitable for both quarrying and mining operations

Easy maintenance and strong field reliability

Cost-effective alternative to international brands

Q1: What is the QL Series DTH Hammer used for?

The QL Series is designed for mining blast holes, water well drilling, quarrying, and construction foundation projects. It is suitable for medium to large diameter drilling in various rock formations.

Q2: What is the difference between QL40, QL50, QL60, and QL80?

The main differences are hole diameter range, air consumption, and impact energy. Smaller models like QL40 are used for shallow drilling, while QL80 is designed for large diameter and deep drilling operations.

Q3: Can the QL Series replace Atlas Copco or Sandvik hammers?

Yes, the QL Series is designed as a compatible replacement system for similar DTH hammer models used by international brands such as Atlas Copco, Sandvik, and Epiroc, depending on size and configuration.

Q4: Do you support OEM or private label service?

Yes, we provide full OEM services including logo customization, nameplate design, color options, packaging customization, and model marking according to customer requirements.

Q5: How is the product shipped and what is the delivery time?

Standard models are shipped within 7–20 days depending on order quantity. We use sea freight with export-grade wooden packaging. Air freight is available for urgent orders.