Quick Summary
LEANOMS 5 inch DTH Hammer and SD5 DTH Hammer Bits are designed for rock drilling, water well drilling, mining, quarrying, and geotechnical applications where stable impact energy, reliable air sealing, and durable wear resistance are required. For buyers comparing DTH hammer suppliers in China, this page explains materials, part structure, bit options, selection logic, common mistakes, and packaging details before ordering.
LEANOMS Rock Drilling Tools
5 Inch DTH Hammer For Sale – SD5 DTH Hammer Bits for Efficient Rock Drilling
A 5 inch DTH hammer is not just another drilling accessory. It directly affects penetration speed, air consumption, hole straightness, bit life, and total drilling cost. LEANOMS supplies DTH hammers, SD5 DTH hammer bits, drill pipes, top hammer tools, casing systems, and tricone bits for contractors who need one-source drilling tool support.
This product page is built for practical procurement: material selection, replacement parts, bit diameter options, face-type selection, application matching, and packaging control are all explained clearly so buyers can avoid wrong matching before shipment.
Product Overview for Fast Buyer Evaluation
Before purchasing a DTH hammer, buyers should confirm the hammer size, bit diameter range, face type, air compressor condition, rock formation, and spare part availability. The table below gives a quick purchasing snapshot.
| Product Name | 5 Inch DTH Hammer / SD5 DTH Hammer Bits |
| Brand | LEANOMS |
| Main Applications | Water well drilling, mining, quarrying, construction drilling, geotechnical drilling, foundation drilling |
| Main Materials | Alloy steel, tungsten carbide inserts, rubber seals, heat-treated internal components, high-strength threaded connections |
| Available Bit Diameters | 140 mm, 146 mm, 152 mm |
| Available Face Types | Flat Face, Convex Face, Concave Face |
| Buyer Focus | Stable drilling speed, reduced downtime, better bit compatibility, reliable spare parts, export-ready packing |
Materials That Decide Drilling Life, Impact Stability, and Maintenance Cost
The life of a DTH hammer depends heavily on material quality. Low-grade steel, poor sealing, weak threads, or unstable internal parts can cause air leakage, unstable impact, faster wear, and unexpected downtime. LEANOMS focuses on material reliability to help drilling teams maintain consistent performance in demanding rock conditions.
| Material / Component | Function | Buyer Benefit |
|---|---|---|
| Alloy Steel | Used for hammer body and structural parts | Improves strength, hardness, wear resistance, and impact durability |
| Tungsten Carbide Inserts | Used on drill bit buttons | Helps resist abrasive rock and supports longer bit service life |
| Rubber Seals | Maintain air tightness inside the hammer | Reduces air leakage and supports stable impact energy |
| Piston, Valve, Spring and Internal Parts | Control repeated impact movement | Improves working stability and reduces abnormal hammer failure |
| Threaded Connections | Connect hammer, drill pipe, and other drilling tools | Helps prevent loose connection, thread damage, and field replacement delays |
| Small Stainless Components | Used for screws, nuts, washers, and smaller parts | Improves corrosion resistance and supports structural reliability |
SD5 DTH Hammer Spare Parts and Part Numbers
Spare part traceability matters when buying DTH hammers in quantity. If a supplier cannot clearly identify top subs, pistons, valves, cylinders, stop rings, and drive chucks, maintenance becomes guesswork. The SD5 part list below helps buyers order replacement parts more accurately.
| No. | Part Description | Part Number |
|---|---|---|
| 1 | Top Sub | LR-SD5-01 |
| 2 | O Ring of Top Sub | LR-SD5-02 |
| 3 | Breakout Ring | LR-SD5-03 |
| 4 | Check Valve | LR-SD5-04 |
| 5 | Spring | LR-SD5-05 |
| 6 | Compression Buffer | LR-SD5-06 |
| 7 | Air Distributor | LR-SD5-07 |
| 8 | Internal Cylinder | LR-SD5-08 |
| 9 | Piston | LR-SD5-09 |
| 10 | External Cylinder | LR-SD5-10 |
| 11 | O Ring of Stop Ring | LR-SD5-11 |
| 12 | Stop Ring | LR-SD5-12 |
| 13 | Drive Chuck | LR-SD5-13 |
Technical Parameters of SD5 DTH Hammer Bits
Bit selection should match the drilling target, rock hardness, hole diameter requirement, and desired hole straightness. The following SD5 DTH bit options cover 140 mm, 146 mm, and 152 mm diameters with flat, convex, and concave face configurations.
| Diameter mm | Diameter Inch | Gauge Buttons | Flat Face Front Buttons | Convex Face Front Buttons | Concave Face Front Buttons | Face Type | Weight KG | Part Number |
|---|---|---|---|---|---|---|---|---|
| 140 | 5 1/2 | Φ18*7 | Φ14*3 | Φ15*4 | / | Convex Face | 15.1 | LR-SD5-140CV |
| 140 | 5 1/2 | Φ16*8 | Φ14*8 | / | / | Flat Face | 15.3 | LR-SD5-140FF |
| 146 | 5 3/4 | Φ18*8 | Φ15*8 | / | / | Flat Face | 15.9 | LR-SD5-146FF |
| 146 | 5 3/4 | Φ18*8 | Φ15*4 | / | Φ14*3 | Concave Face | 15.8 | LR-SD5-146CC |
| 152 | 6 | Φ18*8 | Φ15*8 | / | / | Flat Face | 16.4 | LR-SD5-152FF |
| 152 | 6 | Φ18*8 | Φ16*4 | / | Φ14*4 | Concave Face | 16.2 | LR-SD5-152CC |
If X → Choose Y: Practical DTH Bit Selection Logic
A DTH hammer can only perform well when the bit face, button layout, air pressure, and rock condition match. Choosing only by diameter is a classic buyer mistake. Use the logic below as a starting point before confirming final specifications.
| If Your Situation Is... | Choose This Option | Reason |
|---|---|---|
| You need general-purpose drilling in stable formations | Flat Face Bit | Balanced wear, stable cutting surface, and easier matching for common drilling jobs |
| You need faster penetration in softer or broken formations | Convex Face Bit | Helps concentrate impact and improve drilling aggression |
| Hole straightness and guidance are important | Concave Face Bit | Supports better centering and improved hole control |
| You need fewer maintenance interruptions | Confirm spare parts together with hammer order | Piston, O-rings, check valve, spring, and drive chuck are key parts for field maintenance |
| You are buying from overseas | Confirm packing, marking, part number, and compatible drill pipe | Prevents shipment confusion, wrong matching, and costly jobsite delays |
Common Buyer Mistakes When Ordering 5 Inch DTH Hammers
Mistake 1: Buying by Price Only
A cheap DTH hammer may look attractive, but poor material treatment or weak sealing can increase air consumption, reduce impact stability, and create higher replacement cost later.
Mistake 2: Ignoring Bit Face Type
Flat, convex, and concave face designs do not behave the same. Wrong face selection can affect penetration rate, hole deviation, and button wear.
Mistake 3: Forgetting Spare Parts
No piston, O-ring, valve, or drive chuck backup means a small failure can stop the whole drilling operation. Spare part planning is not decoration; it is insurance.
Mistake 4: Not Confirming Drill Pipe Compatibility
Hammer, drill pipe, and bit must work as a system. Mismatched connections can cause thread damage, vibration, energy loss, and jobsite frustration.
Compatible Drill Pipe Support for Complete Drilling Systems
Drill pipes connect the drilling rig to the drilling bit and help transmit drilling fluid and torque during the drilling process. For borehole drilling, water well projects, mining operations, geothermal work, and construction drilling, a reliable drill pipe is essential for keeping the drilling system stable.
LEANOMS can support buyers with matched drill pipe, DTH hammers, DTH bits, casing systems, top hammer tools, and tricone bits. For importers and contractors, this reduces the risk of buying a hammer from one supplier, a bit from another, and discovering the thread or performance does not match on site. 很多采购翻车不是因为产品不会钻,而是因为"系统没配好"--这锅,别让工地背.
Packing, Inspection, and Global Shipping Support
DTH hammers and bits are heavy-duty products, but export packaging still matters. Poor packing can cause surface damage, missing labels, part confusion, or shipment claims. LEANOMS packaging is prepared for long-distance transport and international delivery.
| Packing Focus | What Buyers Should Confirm | Why It Matters |
|---|---|---|
| Product Protection | Anti-impact packing, stable fixing, surface protection | Reduces damage risk during sea, air, or land transport |
| Part Identification | Model, part number, quantity, and package label | Helps warehouse teams and jobsite crews identify parts faster |
| Export Readiness | Commercial documents, packing list, shipment details | Supports smoother customs clearance and delivery planning |
| Quality Check | Final inspection before packing | Reduces wrong shipment, missing parts, and avoidable after-sales issues |
Practical Recommendation Before Sending an Inquiry
For a faster quotation, send your required hole diameter, rock condition, drilling depth, air compressor capacity, current hammer model, connection type, and expected quantity. If you are replacing an existing hammer, a photo of the old hammer, bit, and drill pipe thread can help confirm compatibility more accurately.
If you are not sure whether to choose a flat face, convex face, or concave face SD5 bit, share your drilling application first. LEANOMS can help match the hammer, bit, and drill pipe combination before shipment, instead of letting your team test blindly after the goods arrive.
FAQ About 5 Inch DTH Hammer and SD5 DTH Hammer Bits
1. What is a 5 inch DTH hammer used for?
A 5 inch DTH hammer is commonly used for rock drilling, water well drilling, quarrying, mining, geotechnical drilling, and construction drilling where efficient impact energy and stable borehole performance are required.
2. What materials are used in LEANOMS DTH hammers and bits?
The main materials include alloy steel for structural strength, tungsten carbide inserts for bit wear resistance, rubber seals for air tightness, and heat-treated internal components such as pistons, valves, and springs.
3. How do I choose between flat face, convex face, and concave face DTH bits?
Flat face bits are suitable for general drilling, convex face bits can help improve penetration in softer or broken formations, and concave face bits are often preferred when better hole straightness and centering are required.
4. Which SD5 bit diameters are available?
The listed SD5 DTH hammer bit options include 140 mm, 146 mm, and 152 mm diameters, with different button layouts, face types, weights, and part numbers.
5. Can LEANOMS supply spare parts for SD5 DTH hammers?
Yes. The SD5 hammer parts list includes top sub, O-rings, breakout ring, check valve, spring, compression buffer, air distributor, internal cylinder, piston, external cylinder, stop ring, and drive chuck.
6. Why should I confirm drill pipe compatibility before ordering?
Drill pipe compatibility affects connection reliability, torque transmission, drilling stability, and field maintenance. Confirming thread and system matching before shipment helps prevent jobsite delays.
7. What information should I provide for a quotation?
Please provide the required hole diameter, drilling application, rock condition, drilling depth, air compressor capacity, connection type, current tool model if available, and order quantity.
8. Does LEANOMS support international shipping?
Yes. LEANOMS provides export-oriented packing and global shipping support for DTH hammers, DTH bits, drill pipes, and related drilling tools.
Final Note / Practical Takeaway
Choosing a 5 inch DTH hammer is a system decision, not a single-product purchase. The hammer body, SD5 bit diameter, button layout, face type, sealing performance, spare parts, drill pipe compatibility, and export packing all influence drilling efficiency and total ownership cost.
If your project needs stable penetration, fewer stoppages, and a cleaner purchasing process, confirm your drilling conditions with LEANOMS before placing the order. The right hammer and bit combination can save far more than a cheap but mismatched tool ever will.
Need Help Choosing the Right SD5 DTH Hammer and Bit?
Send your drilling depth, rock condition, hole diameter, compressor capacity, and connection type. LEANOMS will help you match the suitable hammer, bit, and drill pipe combination.
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