DTH Jack Hammer

 

DTH (Down-The-Hole) Jack Hammer, also known as a DTH hammer or rock drill, is a pneumatic drilling tool used in various applications, particularly in mining, quarrying, construction, and civil engineering projects. It is designed to provide powerful and efficient drilling capabilities for hard rock formations.

 

The DTH Jack Hammer consists of several key components:

 

Hammer body: The main body of the DTH Jack Hammer houses the internal mechanism and components that generate the percussive force required for drilling. It is typically made of durable materials, such as steel, to withstand the high-pressure air and repetitive impact forces.

 

Piston: The piston is located inside the hammer body and is driven by compressed air. It moves back and forth rapidly to deliver the powerful percussive blows to the drill bit.

 

Drill bit: The drill bit is the cutting tool attached to the bottom end of the DTH Jack Hammer. It varies in design and size depending on the drilling application and the type of rock being drilled. Drill bits are made from hard and durable materials, such as tungsten carbide or diamond, to withstand the abrasiveness of the rock formations.

 

Shank: The shank connects the drill bit to the DTH Jack Hammer. It provides a secure and reliable connection, ensuring efficient power transmission from the hammer to the bit.

 

Air supply: DTH Jack Hammers require a compressed air supply to operate. The air is delivered through an air hose connected to the hammer body, and it powers the piston, providing the necessary force for drilling.

 

When in operation, the DTH Jack Hammer works by the following process:

 

Compressed air is directed into the hammer body, creating high-pressure air.

 

The high-pressure air pushes the piston inside the hammer body, which, in turn, strikes the back of the drill bit.

 

The rapid piston strikes create a powerful percussive force that is transferred to the drill bit, enabling it to break and chip away the rock.

 

Simultaneously, air is directed through the center of the hammer body, flushing away the drilled cuttings from the borehole.

 

DTH Jack Hammers are known for their efficiency in drilling hard and abrasive rock formations, offering advantages such as high penetration rates, versatility, and reliability. They are available in various sizes and configurations to suit different drilling requirements and can be mounted on different types of drilling rigs or used as handheld tools depending on the application.

 

DTH Jack Hammer are specialized pneumatic tools used in drilling operations, particularly in mining, construction, and quarrying. Here are some of their notable specialties:

 

Efficient drilling: DTH Jack Hammer is designed for efficient drilling in hard rock formations. They utilize a percussive mechanism that delivers high-impact forces directly to the drill bit, allowing for faster and more effective drilling compared to other drilling methods.

 

Deep hole capability: DTH Jack Hammer is capable of drilling deep holes, ranging from several meters to several hundred meters, depending on the specific model and application. This makes them suitable for various drilling projects, including blast hole drilling, foundation drilling, and well drilling.

Versatility: DTH Jack Hammers are versatile tools that can be used in a wide range of applications. They can drill holes of different diameters, from small holes for anchoring or blasting to larger holes for exploration or production purposes.

 

Excellent hole straightness: DTH Jack Hammers are known for their ability to maintain hole straightness during drilling. The combination of percussive action and rotation helps to keep the drill bit aligned and prevent deviation, resulting in accurate and precisely positioned drill holes.

 

Adaptability to different rock formations: DTH Jack Hammers are designed to handle various rock formations, including hard and abrasive rocks. The drill bits and hammers can be selected based on the specific rock conditions, ensuring optimal performance and durability in different drilling environments.

 

Fast drilling rate: Due to their efficient percussive action and deep hole capability, DTH Jack Hammers offer a fast drilling rate, significantly reducing the time required for completing drilling projects. This can lead to increased productivity and cost savings.

 

Lower air requirements: DTH Jack Hammers typically require lower air volumes compared to other drilling methods, making them more energy-efficient. This can result in reduced fuel consumption and lower operating costs.

 

Durability and reliability: DTH Jack Hammers are built to withstand the demanding conditions of drilling operations. They are constructed using high-quality materials and undergo stringent quality control processes to ensure durability, reliability, and extended service life.

 

Overall, the specialty of DTH Jack Hammers lies in their efficiency, versatility, and ability to provide fast, accurate, and reliable drilling in challenging rock formations. These qualities make them a preferred choice for many drilling applications in various industries.

 

 

 

Technical Parameters Of NUMA100 DTH Hammers

 

Bit Shank	NUMA100
Hole Range	Φ254-305mm
Connection Thread	API 4 1/2" Reg API 5 1/2" Reg
Working Pressure	10-25Bar / 1-2.5Mpa
Speed Recommend	15-35rpm
Pull Force Recommend	19KN
Length	1441mm
Weight	308kg

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Technical Parameters Of NUMA100 DTH Bits

Diameter		Gauge Buttons	Front Buttons				Weight(KG)	Part Number
mm	Inch		Flat Face	Convex Face	Concave Face	Face Type
254	10	Φ19*12	Φ16*12	Φ18*8	Φ16*6	Concave Face	88.4	LN-NUMA100-254CC
275	10 5/6	Φ19*12	Φ16*12	Φ18*8	Φ16*8	Concave Face	92.5	LN-NUMA100-275CC
305	12	Φ19*15	Φ18*15	Φ18*12	Φ16*9	Concave Face	105.0	LN-NUMA100-305CC