📦 Погружные молоты DTH

Погружной пневмоударник M3A среднего класса

Name: Погружной пневмоударник M3A среднего класса
Brand: Kaishan
SKU: M3A
Availability: InStock

Model: M3A

The Kaishan M3A DTH hammer is a 3-inch class down-the-hole tool engineered for reliable percussion drilling in mining, quarrying, and water well projects. Designed with a valveless air cycle and high-quality alloy steel body, it delivers stable impact energy with lower air consumption. The M3A accepts standard 3-inch DTH bits with shank types such as COP32, DHD3.5, or Mission30, making it compatible with many light to medium-duty rigs. Its simple structure reduces maintenance downtime and extends service life in abrasive rock conditions. Ideal for blast hole drilling, foundation work, and shallow water wells, the M3A pairs well with Kaishan portable compressors and drilling rigs. Each unit is inspected for dimensional accuracy and performance before shipment, ensuring consistent quality for global customers.

Technical Specifications

Модель	M3A
Длина без долота (мм)	780
Вес без долота (кг)	21
Диапазон бурения (мм)	90-110

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Selection Advantages Applications Comparison Components Principle Features Packaging Service FAQ

Product Details

## Overview The Kaishan M3A is a 3-inch class down-the-hole (DTH) hammer designed for efficient percussion drilling in mining, quarrying, construction, and water well applications. As a core product in Kaishan's Drilling Tools line, the M3A delivers reliable impact energy and stable performance when matched with suitable DTH bits and air compressors. Its compact design makes it a practical choice for small to medium drilling rigs where mobility and cost efficiency matter. ## Technical Features The M3A uses a valveless air distribution mechanism that simplifies the internal structure and reduces the number of wearing parts. The piston and cylinder are manufactured from high-strength alloy steel and undergo heat treatment to improve wear resistance and fatigue life. The hammer body features precision machining for smooth piston movement and consistent blow frequency. Standard shank options allow the M3A to accept common 3-inch bits, giving operators flexibility in bit selection. The tool is designed to work with air pressures typically in the 0.5–0.7 MPa range, balancing penetration rate and air consumption for light to medium-duty operations. ## Applications The M3A is widely used in blast hole drilling for small mines and quarries, anchor drilling in construction, and shallow water well drilling. It performs well in medium-hard to hard rock such as granite, limestone, and sandstone. Because of its compact size, it is often paired with portable drilling rigs and mobile compressors, making it suitable for remote sites and projects with limited access. ## Quality and Compatibility Each Kaishan M3A hammer is inspected for dimensional accuracy, surface finish, and assembly quality before packing. It is compatible with a range of 3-inch DTH bits and can be matched with Kaishan compressors and rigs for a complete drilling system. With proper maintenance, the M3A offers a cost-effective balance of performance, service life, and operating cost.

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.

Модель

M3A

Длина без долота (мм)

780

Вес без долота (кг)

Диапазон бурения (мм)

90-110

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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3-inch class DTH hammer for light to medium-duty drilling

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Valveless air cycle design reduces wearing parts and maintenance

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High-strength alloy steel body with heat-treated piston and cylinder

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Accepts standard 3-inch DTH bits with common shank types

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Stable impact energy and lower air consumption

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Compact and lightweight for portable rigs and remote sites

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Compatible with Kaishan compressors and drilling rigs

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Factory inspected for dimensional accuracy and performance

Middle Pressure Series Models

Compare specifications across the series to find the right model.

Model	Model	Type	Size	Application	Material	Inquire
M3AThis model	M3A	DTH Hammer (3-inch class)	3 inches	Mining, quarrying, water well drilling, construction	High-strength alloy steel	Get a Quote
M3A	M3A	DTH Button Bit	3 inches (76 mm)	Mining, Water Well, Quarrying	Alloy Steel, Tungsten Carbide	Get a Quote
M3K	M3K	DTH Drill Bit	3 inch (76 mm) diameter	Mining, quarrying, water well drilling, construction	Alloy steel body with tungsten carbide buttons	Get a Quote
M30C	M30C	Down-The-Hole (DTH) Hammer	3-4 inch (76-102 mm) hole diameter	Mining, water well drilling, quarrying, construction	Alloy steel, heat-treated	Get a Quote
M3AK	M3AK	Down-the-Hole (DTH) Hammer	3 inch	Mining, quarrying, water well drilling, construction	Alloy steel	Get a Quote

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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
Cylinder
Piston
Bottom sub
Chuck
Retainer rings
Check valve
O-rings and seals

Working Principle

The Kaishan M3A DTH hammer operates on a valveless air cycle. Compressed air enters the hammer through the top sub and flows into the cylinder chamber. The air pushes the piston upward and downward in a reciprocating motion. On the downward stroke, the piston strikes the bit shank, transferring impact energy to the drill bit. On the upward stroke, the air is exhausted through the bit holes to flush cuttings out of the hole. The valveless design uses the piston itself to control air distribution, reducing the number of moving parts and simplifying maintenance. The hammer is connected to the drill string via a top sub and a bottom sub, and the bit is retained by a chuck and retainer rings. This mechanism allows the M3A to deliver reliable percussion energy with lower air consumption, making it suitable for light to medium-duty drilling in mining, quarrying, and water well projects.

Detailed Features

▸Valveless air cycle for simplified structure and fewer wearing parts
▸Heat-treated alloy steel piston and cylinder for extended service life
▸Precision-machined internal components for smooth operation
▸Compatible with common 3-inch DTH bits and shank types
▸Optimized air consumption for light to medium-duty drilling
▸Compact and lightweight design for portable rigs
▸Easy maintenance with accessible wear parts
▸Factory tested for performance and dimensional accuracy

Packaging & Shipping

Each Kaishan M3A DTH hammer is packed in a wooden case or pallet with rust-preventive coating and protective caps on threaded connections. Standard export packing is suitable for sea and air transport. 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 as per customer request. Customized packing and labeling are available upon request.

After-Sales Service

Kaishan provides a 12-month warranty on the M3A DTH hammer for manufacturing defects. Our global service team offers 24-hour technical support via email or phone. We provide operation and maintenance training materials, and on-site training can be arranged for large orders. A full range of spare parts, including pistons, cylinders, and seals, is available for fast delivery. Our after-sales network covers major markets, ensuring quick response and minimal downtime for your drilling operations.