1-2 Inch Middle Air Pressure DTH Bits

Description

Specifications

Product Advantages of Middle Air Pressure DTH Bits

1. Durable Alloy Steel Construction

Middle air pressure DTH bits are manufactured with a durable steel body designed to withstand repeated impact loads during rock drilling. Combined with tungsten carbide buttons, the cutting structure supports effective rock breaking and wear resistance under demanding drilling conditions.

2. Efficient Rock Breaking Performance

DTH drilling uses compressed air to drive the hammer piston, which delivers impact energy directly to the drill bit. The carbide buttons penetrate and fracture the rock through repeated impacts, while continuous rotation helps maintain the drilling process. This direct impact mechanism supports efficient drilling in different rock formations.

3. Reliable Spline Connection

The BR1, BR2 and KD25 configurations feature six-spline connections for matching compatible DTH hammer systems. Proper spline engagement helps transfer impact energy and rotational movement between the hammer and bit. Buyers should confirm the hammer model and connection specifications before ordering.

4. Multiple Diameter Options

HCLH provides middle air pressure DTH bits in multiple diameter options, covering 64 mm to 90 mm across the listed BR1, BR2 and KD25 configurations. Different gauge button specifications are available to accommodate different borehole requirements and drilling equipment.

Working Principle of Middle Air Pressure DTH Bits

Middle air pressure DTH bits operate as part of a down-the-hole drilling system. Compressed air powers the piston inside the DTH hammer, which is positioned directly behind the drill bit.

The piston repeatedly strikes the bit, transferring impact energy to the tungsten carbide buttons to break the rock. At the same time, the drill string rotates the bit, allowing the cutting structure to work across the borehole face.

Compressed air also helps carry rock cuttings out of the borehole through the flushing passages. Proper coordination between hammer performance, air supply, rotational speed and flushing conditions is essential for maintaining stable drilling operations.

Applications of Middle Air Pressure DTH Bits

Middle air pressure DTH bits are suitable for various rock drilling applications where compatible medium-pressure hammer systems are used.

Typical applications include:

• Mineral Exploration: Drilling exploration holes for geological investigation and mineral resource assessment.

• Underground Mining: Supporting rock drilling operations in underground mining projects.

• Tunnel Construction: Creating boreholes for rock excavation and blasting preparation.

• Water Conservancy Projects: Supporting rock drilling for water-related infrastructure and geotechnical investigations.

The appropriate bit configuration should be selected according to the rock formation, required borehole diameter and available drilling equipment.

How to Select the Right Middle Air Pressure DTH Bits

Choosing suitable middle air pressure DTH bits requires checking compatibility between the bit, hammer and drilling conditions.

• Hammer Model: Confirm whether the drilling system uses a compatible BR1, BR2 or KD25 hammer.

• Bit Diameter: Select the appropriate diameter according to the required borehole size.

• Spline Configuration: Verify the six-spline connection and dimensional compatibility with the hammer.

• Rock Formation: Consider rock hardness, abrasiveness and geological structure when selecting the carbide button configuration.

• Air Supply: Check that compressor pressure and airflow meet the operating requirements of the selected DTH hammer.

• Flushing Performance: Ensure the air supply and flushing passages can effectively remove rock cuttings during drilling.

Providing the hammer model, required bit diameter, rock type and operating air supply information will help HCLH confirm a suitable product configuration.

For larger diameter requirements, explore our 3 Inch Middle Air Pressure DTH Bits.

You can also explore our complete range of Down-the-hole Drilling Tools for compatible drilling equipment and accessories.

FAQ

Do you provide technical support?

Yes. We provide professional pre-sales, in-sales, and after-sales support, along with expert technical guidance and usage precautions.

Sales Coverage

We supply specialized products to customers worldwide.

Do you provide technical support?

Yes. We provide professional pre-sales, in-sales, and after-sales support, along with expert technical guidance and usage precautions.

Warranty Policy

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