📦 DTH Hammers

L2.5 DTH Hammer

Name: L2.5 DTH Hammer
Brand: Kaishan
SKU: L2.5
Availability: InStock

Model: L2.5

L2.5 DTH Hammer (official model L2.5). Source: Zhejiang Kaishan Heavy Industry product centre.

Best For

Quarry and Open-Pit Mining Water Well Drilling Construction and Foundation Work Exploration and Small-Scale Mining

Technical Specifications

Model	Kaishan L2.5
Type	Down-the-hole (DTH) Hammer
Size	2.5 inch
Application	Quarrying, mining, water well, construction
Material	Alloy steel, heat-treated
Weight	Approx. 25 kg
Packing	Wooden case or pallet

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Selection Advantages Applications Comparison Components Principle Features Packaging Service FAQ

Product Details

## Overview The Kaishan L2.5 is a 2.5-inch class down-the-hole (DTH) hammer engineered for reliable rock drilling in small to medium-diameter applications. As part of Kaishan’s drilling tools line, this hammer is built to deliver consistent impact energy and efficient air usage, making it a practical choice for quarrying, mining, water well drilling, and construction projects. Its compact design suits rigs with limited air capacity while maintaining solid penetration rates in medium-hard to hard rock formations. ## Technical Features The L2.5 DTH hammer uses a valveless or simple valve design to reduce wear points and simplify maintenance. The piston and internal cylinder are precision-machined from high-quality alloy steel and heat-treated for enhanced durability. The hammer body is manufactured to withstand high-frequency impact and abrasive cuttings. It accepts standard button bits with a compatible shank, allowing contractors to match bit type to rock conditions. Air consumption is optimized for 2.5-inch hammers, typically requiring around 3–5 m³/min at 0.7–1.0 MPa, depending on rig setup. The connection thread is designed for secure coupling with drill pipes, reducing energy loss and improving drilling efficiency. ## Applications The Kaishan L2.5 is suitable for blast hole drilling in quarries and open-pit mines, water well and geothermal drilling where hole diameters range from approximately 64 mm to 76 mm, and construction projects such as foundation anchoring and rock bolting. It also performs well in exploration drilling and small-scale mining operations. The hammer can be used with various button bit designs, including flat face and drop center, to match different rock hardness and abrasiveness. ## Benefits Contractors choose the L2.5 for its balance of performance and cost. The hammer’s robust construction reduces downtime, while readily available spare parts and Kaishan’s global service network help keep projects on schedule. Its compatibility with common rigs and drill pipes makes it easy to integrate into existing fleets. With proper maintenance, the L2.5 delivers long service life and stable drilling results, lowering cost per meter in demanding conditions.

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. 25 kg

Model

Kaishan L2.5

Type

Down-the-hole (DTH) Hammer

Size

2.5 inch

Application

Quarrying, mining, water well, construction

Material

Alloy steel, heat-treated

Packing

Wooden case or pallet

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

✓

2.5-inch class DTH hammer for small to medium-diameter drilling

✓

Robust alloy steel body with heat-treated internal components

✓

Optimized air consumption for efficient operation with compact rigs

✓

Compatible with standard button bits and common drill pipes

✓

Simple structure for easy maintenance and reduced downtime

✓

Reliable impact energy for medium-hard to hard rock formations

✓

Suitable for quarrying, mining, water well, and construction

✓

Global after-sales support and readily available spare parts

Applications

📍 Quarry and Open-Pit Mining

Blast hole drilling in limestone, granite, and other hard rock quarries.

Solution: Use Kaishan L2.5 with 64–76 mm button bits and a suitable DTH rig to achieve consistent penetration and reduced cost per meter.

📍 Water Well Drilling

Drilling water wells and geothermal boreholes in medium-hard formations.

Solution: Pair the L2.5 with a reliable air compressor and drill pipes to maintain efficient cuttings removal and stable hole quality.

📍 Construction and Foundation Work

Rock anchoring, foundation piling, and site preparation in urban or remote areas.

Solution: Use the compact L2.5 hammer with portable rigs for precise drilling in confined spaces and challenging ground conditions.

📍 Exploration and Small-Scale Mining

Exploration drilling and small-scale mining where hole diameters are limited.

Solution: Select the L2.5 for its balance of power and air demand, enabling cost-effective drilling with smaller compressors.

Similar Models in This Category

This model is unique in its series — here are similar models from the same category.

Model	Model	Type	Size	Application	Material	Inquire
L2.5This model	Kaishan L2.5	Down-the-hole (DTH) Hammer	2.5 inch	Quarrying, mining, water well, construction	Alloy steel, heat-treated	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

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

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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
Valve or valve-less air distributor
Cylinder
Piston
Bit shank adapter
Guide sleeve
Check valve
O-rings and seals

Working Principle

The Kaishan L2.5 DTH hammer operates on the principle of down-the-hole percussion. Compressed air is fed through the drill pipe to the hammer, where it drives a piston in a reciprocating motion. The piston strikes the shank of the drill bit, generating high-frequency impact energy that fractures the rock. Simultaneously, the air flows through the bit’s flushing holes to remove cuttings from the hole bottom and cool the bit. The hammer’s valve or valveless design controls the air distribution, ensuring efficient energy transfer and reliable operation. The rotation of the drill string indexes the bit, allowing new rock surfaces to be fractured with each impact. This combination of impact and rotation enables efficient drilling in hard rock formations. The L2.5 is designed to match air pressure and volume requirements, typically operating at 0.7–1.0 MPa, to deliver optimal penetration rates while minimizing air consumption. Its simple yet robust construction ensures dependable performance in demanding drilling conditions.

Detailed Features

▸2.5-inch class DTH hammer for small to medium holes
▸High-quality alloy steel body for durability
▸Heat-treated piston and cylinder for extended life
▸Optimized air consumption for compact rigs
▸Compatible with standard button bits
▸Simple design for easy maintenance
▸Reliable performance in medium-hard to hard rock
▸Global spare parts availability and service support

Packaging & Shipping

Each Kaishan L2.5 DTH hammer is packed in a sturdy wooden case or pallet, with rust-preventive coating and protective wrapping. Standard export packing ensures safe transport by sea or air. For bulk orders, hammers can be loaded into 20ft or 40ft containers. Delivery time is typically 15–30 days after order confirmation, depending on quantity. Shipping ports include Ningbo, Shanghai, or other major Chinese ports as requested. Customized packaging and labeling are available for OEM orders.

After-Sales Service

Kaishan provides a 12-month warranty on the L2.5 DTH hammer against manufacturing defects. Our global service network offers 24-hour technical support and prompt spare parts supply. We provide operation and maintenance training for customers and distributors. Regular maintenance kits and wear parts are available to ensure long service life. For any performance issues, our engineers assist with troubleshooting and optimization. We are committed to minimizing downtime and maximizing drilling efficiency for our clients.

Frequently Asked Questions

What is the Kaishan L2.5 DTH hammer used for?+

The Kaishan L2.5 is a 2.5 inch class down-the-hole hammer used for quarrying, mining, water well and construction drilling. It is built for small to medium-diameter blast holes and exploration drilling in medium-hard to hard rock formations.

How much does the L2.5 DTH hammer weigh?+

The Kaishan L2.5 DTH hammer weighs approximately 25 kg. Its compact 2.5 inch class design suits rigs with limited air capacity.

What material is the L2.5 DTH hammer made of?+

The L2.5 DTH hammer has an alloy steel body with heat-treated internal components. The piston and internal cylinder are precision-machined and heat-treated for durability in abrasive ground conditions.

What bits and connections work with the L2.5 hammer?+

The Kaishan L2.5 works with standard button bits and common drill pipes. It has a standard API or custom shank connection for compatibility with many rigs.

Which drilling applications suit the L2.5 DTH hammer?+

The L2.5 suits quarry and open-pit mining, water well drilling, construction and foundation work, and exploration and small-scale mining. It delivers reliable impact energy in medium-hard to hard rock formations.

How is the Kaishan L2.5 DTH hammer packed for shipping?+

Each Kaishan L2.5 DTH hammer is packed in a sturdy wooden case or pallet with rust-preventive coating and protective wrapping. Bulk orders can be loaded into 20ft or 40ft containers.

What warranty does Kaishan provide on the L2.5 DTH hammer?+

Kaishan provides a 12-month warranty on the L2.5 DTH hammer against manufacturing defects. The global service network offers 24-hour technical support and prompt spare parts supply.

Is maintenance of the L2.5 DTH hammer simple?+

The L2.5 uses a valveless or simple valve design that reduces wear points and simplifies maintenance. Its simple structure reduces downtime, and regular maintenance kits and wear parts are available.