📦 DTH Hammers

Kaishan K40C DTH Hammer for Water Well & Mining Drilling

Name: Kaishan K40C DTH Hammer for Water Well & Mining Drilling
Brand: Kaishan
SKU: K40C
Availability: InStock

Model: K40C

The Kaishan K40C DTH hammer is a high-performance down-the-hole drilling tool engineered for reliable rock penetration in mining, water well, and quarry applications. Designed with a 4-inch class shank and precision-machined internal components, the K40C delivers consistent impact energy while minimizing air consumption. Its robust alloy steel body and optimized piston geometry ensure extended service life even in abrasive formations. Compatible with standard DTH bits and drill pipes, this hammer integrates easily into existing rig setups. Whether drilling blast holes, water wells, or geotechnical boreholes, the Kaishan K40C offers dependable performance, reduced downtime, and lower cost per meter. Backed by Kaishan's global service network, it is an ideal choice for contractors seeking productivity and durability in demanding drilling conditions.

Best For

Mining Blast Hole Drilling Water Well Drilling Quarry & Aggregate Production Geotechnical & Construction Drilling

Technical Specifications

Model	K40C
Type	Down-The-Hole (DTH) Hammer
Size	4-inch class (105-130mm hole diameter)
Application	Mining, water well, quarry, construction drilling
Material	Alloy steel, heat-treated
Weight	Approx. 45 kg (99 lbs)
Packing	Wooden case with foam padding

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Selection Advantages Applications Comparison Components Principle Features Packaging Service FAQ

Product Details

The K40C is a down-the-hole hammer in the high-air-pressure series, a 4-inch class tool in the drilling tools line. Compressed air fed through the drill pipe drives a reciprocating piston that strikes the bit shank, while exhaust air clears cuttings and cools the bit. Its heat-treated alloy steel body, check valve, guide sleeve and seals resist wear in abrasive rock. It suits mining blast holes, water wells, quarries and geotechnical work, pairing with standard shank bits and drill rods on a rig.

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. 45 kg (99 lbs)

Model

K40C

Type

Down-The-Hole (DTH) Hammer

Size

4-inch class (105-130mm hole diameter)

Application

Mining, water well, quarry, construction drilling

Material

Alloy steel, heat-treated

Packing

Wooden case with foam padding

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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4-inch class DTH hammer for versatile rock drilling

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High-frequency impact for fast penetration in hard rock

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Alloy steel body with heat treatment for extended life

✓

Optimized air passages reduce pressure loss and fuel use

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Standard shank fits common DTH bits and drill pipes

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Simple design for easy maintenance and quick part replacement

Applications

📍 Mining Blast Hole Drilling

Used in open-pit mines to drill blast holes in hard rock such as granite and basalt.

Solution: The K40C delivers consistent impact energy, ensuring straight holes and high drilling speed, reducing overall mining cycle time.

📍 Water Well Drilling

Ideal for drilling water wells in medium to hard formations for municipal, agricultural, and industrial supply.

Solution: With efficient hole cleaning and reliable performance, the K40C helps contractors complete water wells faster with lower air consumption.

📍 Quarry & Aggregate Production

Employed in quarries for drilling blast holes to extract limestone, sandstone, and other aggregates.

Solution: The hammer's durable construction and easy maintenance minimize downtime, ensuring continuous production in abrasive conditions.

📍 Geotechnical & Construction Drilling

Suitable for site investigation, foundation piling, and anchoring in construction projects.

Solution: The K40C provides accurate hole alignment and reliable performance in varied ground conditions, supporting safe and efficient construction.

High Pressure Series Models

Compare specifications across the series to find the right model.

Model	Model	Type	Size	Application	Material	Inquire
K40CThis model	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
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
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
K50	K50	Down-the-Hole (DTH) Hammer	5-inch class	Mining, quarrying, water well drilling, 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

Top sub (back head)
Check valve assembly
Cylinder
Piston
Bit shank adapter
Guide sleeve
Retainer ring
O-rings and seals

Working Principle

The Kaishan K40C 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 inlet. Inside, a reciprocating piston is driven by air pressure alternately applied to its top and bottom surfaces. The piston strikes the drill bit's shank at high frequency, typically 800 to 1,500 blows per minute, generating powerful stress waves that fracture rock. After impact, the air exhausts through the bit's flushing holes, clearing cuttings from the hole bottom and cooling the bit. The hammer's valving system controls air distribution, ensuring smooth piston movement and optimal energy transfer. This design allows the K40C to drill efficiently in hard rock with minimal energy loss. The hammer's simple yet robust mechanism ensures reliable operation and long service life, making it a preferred tool for DTH drilling professionals.

Detailed Features

▸4-inch class hammer for drilling 4 to 5 inch holes
▸High impact frequency for rapid penetration
▸Heat-treated alloy steel for wear resistance
▸Optimized air flow for efficient hole cleaning
▸Standard shank compatible with common DTH bits
▸Modular design for easy maintenance
▸Low air consumption reducing operating costs
▸Reliable performance in hard rock formations

Packaging & Shipping

Each Kaishan K40C DTH hammer is packed in a sturdy wooden case with foam padding to prevent damage during transport. Multiple units can be loaded into 20ft or 40ft containers, with typical quantities of 100-150 units per 20ft container. Delivery time is 15-30 days after order confirmation, depending on quantity. We ship from major Chinese ports such as Shanghai, Ningbo, or Qingdao. Customized packaging and labeling are available upon request.

After-Sales Service

Kaishan offers a 12-month warranty on the K40C DTH hammer covering manufacturing defects. Our global service network provides 24-hour technical support via email or phone. We offer on-site training for operators and maintenance personnel to ensure optimal performance. A full range of spare parts is available for immediate shipment, minimizing downtime. Our experienced engineers can assist with troubleshooting and application optimization. We are committed to customer satisfaction and long-term partnerships.

Frequently Asked Questions

What is the recommended hole diameter for the Kaishan K40C DTH hammer?+

The K40C is designed for drilling holes with diameters ranging from 105mm to 130mm (4 to 5 inches), depending on the bit used.

What is the required air pressure and consumption for the K40C?+

The K40C typically operates at 10-14 bar (145-203 psi) and consumes approximately 6-9 m³/min (212-318 cfm) of air, varying with pressure and bit size.

What types of drill bits are compatible with the K40C?+

The K40C uses a standard 4-inch shank, compatible with DTH bits from Kaishan and other major brands that meet the same shank specification.

How often should the K40C be maintained?+

Regular inspection is recommended after every 100-150 drilling hours. Check for wear on the piston, cylinder, and seals, and replace worn parts promptly to ensure optimal performance.

Can the K40C be used for both vertical and inclined drilling?+

Yes, the K40C is suitable for vertical, inclined, and horizontal drilling applications, provided proper rig setup and air supply are maintained.

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

Kaishan offers a 12-month warranty against manufacturing defects. It does not cover normal wear parts or damage due to improper operation or maintenance.