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DTH Hammers

DTH(down the hole) Hammers

Classifying by hammers cutting blowing up way: Conventional DTH hammer & Reverse Circulation DTH hammer (RC hammer)

Outer diameter: 1 inch, 2 inch, 3 inch, 4 inch, 5 inch, 5.5 inch, 6 inch, 7 inch, 8 inch, 9 inch, 10 inch, 12 inch , 15 inch, 24 inch, etc.,

Classifying by hammers rated working pressure: Low/High Air pressure DTH hammer,Ultrahigh air pressure DTH hammer

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Product Details
Parameters
Product Details

DTH (Down-The-Hole) Hammers Product Introduction
DTH Hammers
DTH HammersOverview
DTH (Down-The-Hole) Hammers are high-performance drilling tools engineered for efficient, deep-hole excavation in demanding applications such as mining, oil and gas exploration, water well drilling, geothermal energy development, and infrastructure construction. By delivering direct impact energy to the drill bit at the bottom of the borehole, DTH Hammers significantly enhance drilling efficiency, even in complex geological conditions involving hard rock formations. Renowned for their durability, reliability, and low maintenance costs, DTH Hammers are a critical component of modern drilling operations worldwide.
DTH Hammers
Core Technological Advantages
1. High-Efficiency Impact System
– Optimized piston and valve sleeve design enables high-frequency, high-energy impacts, ensuring rapid penetration through extremely hard rock layers such as granite and basalt.
– Direct energy transfer to the drill bit minimizes energy loss, achieving 30% faster drilling speeds compared to conventional rotary drills.

2. Wear Resistance & Extended Service Life
– Critical components (e.g., cylinder, piston, drill bit) are crafted from aerospace-grade alloy steel and coated with tungsten carbide, enhancing wear resistance by 50% for abrasive environments.
– Modular design allows quick replacement of wear parts, reducing downtime and maximizing productivity.

3. Versatility & Compatibility
– Compatible with multiple drill rig types (top-hammer, rotary) and adaptable to borehole diameters ranging from 3 to 16 inches (76–406 mm), with drilling depths extending to hundreds of meters.
– Integrated air reverse circulation system ensures efficient cuttings removal and bit cooling, enabling stable performance in challenging formations (e.g., aquifers, fractured zones).

4. Energy Efficiency & Sustainability
– Low air pressure requirements (1.0–3.5 MPa) reduce energy consumption, while advanced bit designs minimize rock debris generation, aligning with global green mining standards.

DTH Hammers

Typical Applications
-Blast Hole Drilling (Mining): Precision-controlled hole depth and diameter for optimized blasting efficiency and ore recovery.
-Oil, Gas & Geothermal Wells: Rapid deep-rock drilling to accelerate project timelines.
-Hydraulic & Infrastructure Projects: Ideal for anchor holes, foundation pile holes, and tunnel pre-excavation surveys.
-Emergency Rescue & Exploration: Rapid deployment in complex geological conditions for resource exploration or disaster response.

Product Series & Selection Guide
DTH Hammers are available in a comprehensive range to meet diverse operational needs:
-Light Series: Designed for small-diameter (3–6 inches / 76–152 mm) and shallow-depth drilling, offering high mobility.
– Medium Series: Balances efficiency and durability, widely used in mining and infrastructure projects.
– Heavy Series: Engineered for ultra-deep holes and extreme hard rock, featuring reinforced impact structures and advanced cooling systems.

Selection Support: Tailor your choice based on rock hardness, target borehole diameter/depth, and equipment specifications. Complimentary technical consultation services are available.

Service Commitment
– Global Technical Support: 24/7 expert assistance, including on-site troubleshooting and operator training.
– Spare Parts Network: Strategic inventory hubs ensure critical components arrive within 48 hours to major mining and construction sites.
– Warranty: 12-month warranty on core components, backed by lifetime maintenance support.

Conclusion
DTH Hammers combine cutting-edge innovation with robust engineering to deliver efficient and reliable drilling solutions for the most challenging projects. Whether tackling extreme geological conditions or large-scale industrial operations, our products and services empower clients to achieve higher productivity and lower total cost of ownership.The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ½”–10″). Smaller blast holes are generally drilled using tophammer, and larger holes generally use rotary machines.In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to . 750 mm (30″). With multiple hammer units CD (Cluster drills) drill holes up to 70″ or 1778 mm.As a rule of thumb, the smallest hole diameter a DTH hammer can drill is its nominal size. A 4 inch hammer will drill a 4 inch (102 mm) hole. The limiting factor is the outside diameter of the hammer, because, as hole diameter reduces, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 1 inch, so for a 4 inch hammer the maximum hole size is 5 inch (127–130 mm).Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.

Air Consumption / Operating Pressure

Product codes are a valuable tool to describe and identify the product. In the code structure we have tried to describe the product features with an alphanumeric system and not always 100% logical, but with the attached key you will be able to find the product you are looking for or alternative products.
DTH Hammers

Air Consumption / Operating Pressure

DTH Hammers

Parameters
Hammer BR2A DHD3.5 HK4D HD45 HQL4A HQL50 HK5Q HD55 HQL60 HQL6A HQL80 HD85 HK9Q HSD10 HSD12 HK12Y N125-R
Recommended bit size, mm 76 92-105 112-127 140-152 165-178 203-229 216-229 245-305 305-445 305-350 305-445
Bit Shank BR2A DHD3.5 DHD340A QL40 QL50 DHD350 QL60 QL80 DHD380 QL80 SD10 SD12 HY12 NUMA125R
External diameter, mm 63 82 100 100 101 126.5 127.5 126.5 148 146 185 185 203 225 275 275 275
Length excl. thread, mm
(Less bit)
837 855 915 1032.5 1057 1147 935 1167 1121 1182 1471 1487 1345 1413 1680 1590 1812
Hammer weight, kg
(Less bit)
14.1 25 37.5 40.6 41 71.6 67.6 77.2 105 105 203 206 228 303 526 510.2 546
Package case size (L)910
(W)90
(H)120
(L)1200
(W)110
(H)140
(L)1010
(W)130
(H)160
(L)1080
(W)125
(H)134
(L)1150
(W)130
(H)160
(L)1290
(W)150
(H)175
(L)1100
(W)155
(H)180
(L)1290
(W)150
(H)175
(L)1270
(W)170
(H)200
(L)1260
(W)180
(H)200
(L)1440
(W)230
(H)270
(L)1560
(W)230
(H)270
(L)1500
(W)240
(H)280
(L)1620
(W)275
(H)290
(L)1880
(W)320
(H)320
(L)1665
(W)320
(H)360
(L)1880
(W)310
(H)310
Top Sub thread RD50 2-3/8″ API REG 3-1/2″ API REG 4-1/2″ API REG 6-5/8″ API REG 6-5/8″ API REG
7-5/8″ API REG
6-5/8″
API REG
Working Pressure, PSI 80-170 150-250 200-300 250-350 300-350 300-380 300-380 150-350 200-350
Air consumption, CFM 250-350 300-400 500-700 500-800 600-900 950-1200 950-1200 1000-1800 1200-1500 800-1800
Piston diameter, mm 42.7 65 82 80 80 104 102 100 122 121 150 150 165 185 225
Piston weight, kg 1.7 5.1 9.2 9 9 17 17 16 24 24 38 42 50 68 110 111 111
Wrench flat, mm L47
W50
L57
W35
L74.5
W45
L64
W40
NO
wrench
flat
L89
W60
L88
W50
L89
W60
L101
W65
L101
W60
L128
W70
L140
W70
L128
W70
L140
W70
L140
W70
L140
W70
L140
L70
Feed force, kN 2~6 3~8 5~15 6~25 7~20 10~25 15~30 20~35
Rotation speed, r/min 30-70 3-90 25-80 20-70 25-60 20-60 15-35
Drilling conditions and project specifications may require larger air package to be used

Notice: There is a chance that SHANDIKE may make changes on above-mentioned information. Product pictures and parameters about models, data, performances and specifications on this website are for reference only.

SHANDIKE
Jianxi District, Luoyang, China
+8619937978951
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