📦 DTH Hammers

Kaishan K50 DTH Hammer for Mining & Water Well Drilling

Name: Kaishan K50 DTH Hammer for Mining & Water Well Drilling
Brand: Kaishan
SKU: K50
Availability: InStock

Model: K50

The Kaishan K50 DTH hammer is a high-performance down-the-hole tool engineered for demanding mining, quarrying, and water well drilling operations. Designed with a 5-inch class shank and precision-machined internal components, the K50 delivers reliable impact energy transfer and efficient rock fragmentation in medium to hard formations. Its robust alloy steel body and optimized air distribution system reduce wear and extend service life, while the standardized connection fits most 5-inch DTH rigs and drill pipes. Whether you are drilling blast holes in granite or completing water wells in limestone, the K50 offers consistent penetration rates and low ownership cost. Backed by Kaishan's global service network and strict quality control, this hammer is an ideal choice for contractors seeking dependable drilling tools. Compatible with DTH bits of 130–152 mm diameter and standard API connections, it integrates easily into existing drill strings. The K50 is shipped with protective packaging and available for fast delivery from major Chinese ports.

Best For

Open-Pit Mining Water Well Drilling Quarrying Construction & Foundation

Technical Specifications

Model	K50
Type	Down-the-Hole (DTH) Hammer
Size	5-inch class
Application	Mining, quarrying, water well drilling, construction
Material	Alloy steel, heat-treated
Weight	Approx. 120 kg
Packing	Wooden case with foam protection

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Selection Advantages Applications Comparison Components Principle Features Packaging Service FAQ

Product Details

## Overview The Kaishan K50 is a 5-inch class down-the-hole (DTH) hammer designed for efficient rock drilling in mining, quarrying, construction, and water well applications. As a core component of the drilling tools category, it converts compressed air energy into high-frequency impact force, driving the drill bit to fracture rock while the rotation mechanism indexes the bit for even wear. The K50 is engineered to match common 5-inch DTH rigs and drill pipes, making it a versatile choice for contractors worldwide. ## Technical Features The K50 hammer features a precision-machined alloy steel cylinder and piston, heat-treated for high fatigue resistance and dimensional stability. Its optimized air distribution system ensures reliable piston reciprocation with minimal pressure loss, maximizing impact energy at the bit. The hammer uses a standard shank interface compatible with popular 5-inch bits (130–152 mm) and API connections, allowing quick integration into existing drill strings. Wear parts such as the bit retainer ring and check valve are designed for easy replacement, reducing downtime. The external body is shot-peened and coated to resist corrosion in harsh environments. ## Applications The K50 excels in medium to hard rock formations, including granite, basalt, limestone, and sandstone. It is widely used for blast hole drilling in open-pit mines and quarries, water well drilling in rural and industrial projects, geothermal exploration, and foundation piling. The hammer's stable performance in varied ground conditions makes it suitable for both production drilling and exploration programs. ## Quality and Compatibility Each K50 hammer is assembled under strict quality control and tested for impact frequency, air consumption, and dimensional accuracy. It is compatible with Kaishan and other major brands of DTH rigs, compressors, and drill pipes. The standardized design allows contractors to interchange bits and spare parts easily, reducing inventory complexity. With proper maintenance, the K50 delivers long service intervals and consistent penetration rates, lowering cost per meter drilled. ## Why Choose Kaishan K50 Kaishan is a leading manufacturer of drilling equipment with decades of experience and a global service network. The K50 combines proven design, durable materials, and competitive pricing. It is backed by technical support, spare parts availability, and training services to help you maximize productivity. Whether you are drilling water wells or blast holes, the K50 provides a reliable, efficient solution for your drilling tool needs.

Technical Selection

Key parameters for matching this machine to your job. Send us your hole diameter, depth and rock condition and our engineers will confirm the right configuration.

Weight

Approx. 120 kg

Model

K50

Type

Down-the-Hole (DTH) Hammer

Size

5-inch class

Application

Mining, quarrying, water well drilling, construction

Material

Alloy steel, heat-treated

Packing

Wooden case with foam protection

Not sure this model fits? Tell us the hole diameter and depth — we will confirm the matching rig, compressor and hammer.

Check with an engineer

Key Advantages

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5-inch class DTH hammer for medium to hard rock formations

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Precision-machined alloy steel piston and cylinder for long life

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Optimized air distribution for efficient impact energy transfer

✓

Standard shank and API connections for easy integration

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Compatible with 130–152 mm DTH bits and common drill pipes

✓

Easy-replace wear parts reduce downtime and maintenance cost

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Shot-peened and coated body for corrosion resistance

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Backed by Kaishan global service and spare parts network

Applications

📍 Open-Pit Mining

Blast hole drilling in granite, basalt, and other hard rock.

Solution: Kaishan K50 DTH hammer paired with 140 mm button bit and high-pressure compressor delivers fast penetration and uniform hole diameter.

📍 Water Well Drilling

Drilling water wells in limestone, sandstone, and mixed formations.

Solution: K50 hammer with 152 mm bit and stable air supply ensures reliable sample recovery and well completion.

📍 Quarrying

Production drilling for aggregate and dimension stone.

Solution: K50 hammer with 130 mm bit and efficient air distribution reduces fuel consumption per meter.

📍 Construction & Foundation

Piling and anchor drilling in urban and infrastructure projects.

Solution: K50 hammer with 140 mm bit and low-noise operation meets environmental requirements.

High Pressure Series Models

Compare specifications across the series to find the right model.

Model	Model	Type	Size	Application	Material	Inquire
K50This model	K50	Down-the-Hole (DTH) Hammer	5-inch class	Mining, quarrying, water well drilling, construction	Alloy steel, heat-treated	Get a Quote
K10	K10	DTH Drill Bit (Down-the-Hole Button Bit)	90–130 mm diameter (customizable)	Mining, quarrying, water well drilling, construction	Alloy steel body with tungsten carbide buttons	Get a Quote
K3	K3	DTH Drill Bit	76mm - 152mm	Mining, Quarrying, Water Well Drilling	Alloy Steel with Carbide Buttons	Get a Quote
K4	K4	DTH Drill Bit	Φ110 mm (standard); other sizes available	Mining, water well drilling, quarrying, construction	Alloy steel body with carbide button inserts	Get a Quote
K5	K5	DTH Button Bit	130 mm - 152 mm diameter	Mining, quarrying, water well drilling, foundation engineering	Alloy steel body with tungsten carbide buttons	Get a Quote
K6	K6	DTH Button Bit	76mm - 152mm (3" - 6")	Mining, Quarrying, Water Well Drilling, Construction	Alloy Steel Body with Tungsten Carbide Buttons	Get a Quote
K8	K8	DTH Drill Bit	4 inch (102 mm) diameter	Mining, quarrying, water well drilling	Alloy steel body with tungsten carbide buttons	Get a Quote
K10	K10	DTH Hammer	10 inch	Mining, Water Well, Quarry, Construction	Alloy Steel	Get a Quote
K3	K3	DTH Hammer	3 inch	Mining, quarrying, water well drilling, construction	Alloy steel	Get a Quote
K30C	K30C	Down-the-Hole (DTH) Hammer	3 inch (76.2 mm) nominal	Mining, quarrying, water well drilling, construction	High-quality alloy steel, heat-treated	Get a Quote
K4	K4	DTH Hammer	4 inch	Mining, water well, quarry, construction	Alloy steel, heat-treated	Get a Quote
K40	K40	DTH Hammer	4 inch	Mining, quarrying, water well drilling, construction	High-strength alloy steel	Get a Quote
K40C	K40C	Down-The-Hole (DTH) Hammer	4-inch class (105-130mm hole diameter)	Mining, water well, quarry, construction drilling	Alloy steel, heat-treated	Get a Quote
K46	K46	DTH Hammer	4 inch	Mining, Quarrying, Water Well Drilling, Construction	High-Strength Alloy Steel	Get a Quote
K5	K5	Down The Hole (DTH) Hammer	5 inch	Mining, quarrying, water well, construction	Alloy steel, heat-treated	Get a Quote
K6	K6	DTH Hammer	6 inch	Mining, Water Well, Quarrying	Alloy Steel	Get a Quote
K8	K8	DTH Hammer	8 inch	Water well drilling, mining, quarrying	Alloy steel	Get a Quote
K80	K80	Down-the-Hole (DTH) Hammer	8 inch (203 mm)	Mining, Quarrying, Water Well Drilling	Alloy Steel	Get a Quote

Compare 2–3 models? Tick the boxes and send them together — we will quote each one for you.

Inquire All

Tip: select multiple models and click “Inquire All” — the selected models are added to the quote form automatically, so you get a faster quotation.

Not sure which model fits your project? Send us your working pressure and air demand — our engineers will recommend the right one.

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Main Components

Backhead
Check valve
Cylinder
Piston
Bit retainer ring
Drive chuck
Wear sleeve
Shank adapter

Working Principle

The Kaishan K50 DTH hammer operates on the principle of converting compressed air energy into mechanical impact. Compressed air is fed through the drill pipe into the hammer's backhead, where a check valve prevents backflow. The air then enters the cylinder chamber, pushing the piston forward. As the piston moves, it compresses air in the front chamber. When the piston reaches the bit shank, it delivers a high-energy impact to the drill bit. The exhaust air then flows through the bit's flushing holes to clear cuttings from the hole bottom. A rotation mechanism, typically a top head or rotary table, turns the drill string, indexing the bit for the next impact. The cycle repeats rapidly, typically 1,500–2,500 blows per minute, depending on air pressure and volume. The K50's air distribution system is designed to minimize pressure drop and maximize impact energy, ensuring efficient rock breakage and long component life.

Detailed Features

▸High impact energy for fast penetration in hard rock
▸Durable alloy steel construction with heat treatment
▸Optimized air distribution reduces pressure loss
▸Standard 5-inch shank for broad bit compatibility
▸Easy maintenance with replaceable wear parts
▸Corrosion-resistant surface treatment
▸Stable performance in varied ground conditions
▸Competitive cost per meter drilled

Packaging & Shipping

Each Kaishan K50 DTH hammer is packed in a wooden case with foam protection, then secured on a pallet for shipment. Standard export packaging ensures safe transport by sea or air. We ship from major Chinese ports such as Shanghai, Qingdao, or Tianjin. Lead time is typically 15–30 days after order confirmation, depending on quantity. For urgent orders, please contact our sales team for expedited arrangements.

After-Sales Service

Kaishan offers a 12-month warranty on the K50 DTH hammer against manufacturing defects. Our global service network provides 24-hour technical support and spare parts supply. We offer on-site training for operators and maintenance personnel to ensure optimal performance and safety. Genuine spare parts are available from regional warehouses to minimize downtime. Our engineers can assist with hammer selection, bit matching, and troubleshooting.

Frequently Asked Questions

What is the recommended air pressure for the Kaishan K50 DTH hammer?+

The K50 typically operates at 10–24 bar (145–350 psi) air pressure, with optimal performance around 18–24 bar. Higher pressure increases impact energy and penetration rate.

What size DTH bits are compatible with the K50?+

The K50 uses a standard 5-inch shank and is compatible with DTH bits ranging from 130 mm to 152 mm in diameter. Common sizes include 140 mm and 152 mm.

What is the air consumption of the K50 hammer?+

Air consumption varies with pressure, typically 10–18 m³/min (350–650 cfm) at 18–24 bar. Please refer to the technical manual for detailed curves.

How often should I replace wear parts?+

Wear part life depends on rock conditions and maintenance. Inspect the bit retainer ring, check valve, and piston regularly. Replace when wear exceeds limits specified in the manual.

Is the K50 compatible with other brands of drill rigs?+

Yes, the K50 uses standard API connections and a 5-inch shank, making it compatible with most DTH rigs and drill pipes from major manufacturers.

What is the warranty period and what does it cover?+

Kaishan offers a 12-month warranty covering manufacturing defects. It does not cover normal wear, misuse, or improper maintenance. Contact your dealer for warranty claims.