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Clamshell Grab Bucket

Crane parts service

  • Advanced electrical hydraulic mechanical technology
  • Strong grab power
  • High degree of automation
  • Hydraulic Rotation, Manual Rotation or No-Rotation
  • Mechanical, hydraulic, or electro-hydraulic

Cargo terminal, port machinery factory, power plant, shipyard, steel, etc.

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  • Description
  • Technical Data
  • Details
  • Advantages
  • Product Application


Clamshell grab buckets are commonly used in material handling, excavating, and dredging applications. They come in various sizes and specifications, depending on the job requirements and the equipment they will be attached to.

Clamshell grab buckets components:

  1. Bucket shells: The bucket shells are the primary components of a clamshell grab bucket. They are the two opposing halves that open and close to grasp the material. The bucket shells are usually made of high-strength steel or other wear-resistant materials to withstand heavy loads and abrasive materials.
  2. Hydraulic cylinders: These are the driving force behind the opening and closing movement of the bucket shells. Hydraulic cylinders use pressurized hydraulic fluid to generate linear force, allowing the grab bucket to operate smoothly and efficiently.
  3. Pivot pins: Pivot pins are used to connect the bucket shells to the hydraulic cylinders and the main body. These pins allow the bucket shells to rotate around a fixed point, ensuring smooth and controlled opening and closing of the bucket.
  4. Teeth or cutting edges: Depending on the application, the bucket shells may be equipped with teeth or cutting edges. Teeth are used to penetrate and break up hard materials such as rocks or compacted soil, while cutting edges are used to slice through softer materials like sand or loose soil.
  5. Wear plates or liners: To prolong the life of the clamshell grab bucket, wear plates or liners can be added to the interior of the bucket shells. These components are made from wear-resistant materials and protect the bucket shells from direct contact with abrasive materials, minimizing wear and tear.
  6. Rotator: A rotator may be attached to the clamshell grab bucket to provide 360-degree rotation. This allows for greater flexibility and precision when positioning the bucket and grabbing materials.
  7. Lifting mechanism: The lifting mechanism is the means by which the clamshell grab bucket is attached to the crane or excavator. This can include hooks, chains, or other types of connectors, depending on the specific equipment being used.
  8. Hydraulic hoses and connections: These components provide the necessary hydraulic fluid flow between the hydraulic cylinders and the hydraulic power unit of the excavator or crane. They are crucial for the proper operation of the clamshell grab bucket.

Technical Data

When evaluating clamshell grab buckets, it’s crucial to understand their technical data to ensure they meet your specific needs. Below is a sample of technical data for hydraulic clamshell grab bucket: 

clamshell grab bucket

Model Volume m3 Grab self weight Motor power Operating Pressure close time Workload
Full Slop Ton 380V50Hz kw Mpa S Ton
DY8-12 4.5 2.5 4 18.5 20 13 8
DY10-12 5.5 3.5 5 22 20 17 10
DY15-12 7 4.5 5 22 20 18 15
DY20-12 10 6.8 7 28 20 18 20
DY25-12 12 8.1 10 37 20 18 25
DY30-12 18 10 15 55 20 19 32
DY8-23 3 1.9 3 18.5 20 13 8
DY10-23 4 2.2 4 18.5 20 18 10
DY15-23 6.5 4 6 22 20 17 15
DY20-23 8 5.4 7 28 20 18 20
DY25-23 10 6.9 8 37 20 18 25
DY32-23 12.5 8 11 45.0 20 18 32


  1. Design and Function: Clamshell grab buckets have two or more hinged shells that open and close to grab and release materials. These buckets are designed to handle various materials, such as soil, sand, gravel, coal, and waste.
  2. Types: There are three main types of clamshell grab buckets:

    a. Mechanical: These buckets rely on mechanical systems like ropes, chains, or cables to open and close the shells. Mechanical grab buckets are commonly used with cranes.

    b. Hydraulic: Hydraulic clamshell grab buckets use hydraulic cylinders and valves to control the shells’ movement. These buckets are typically used with excavators and backhoes.

    c. Electro-Hydraulic: These buckets combine the features of hydraulic and electric systems for efficient operation. Electro-hydraulic grab buckets are often used in port and ship applications.

  3. Capacity and Size: Clamshell grab buckets come in various sizes and capacities, ranging from a few hundred liters to several cubic meters. The size and capacity should be chosen based on the equipment it will be attached to and the intended application.
  4. Material and Construction: Clamshell grab buckets can be made from materials such as steel, aluminum, or hardox, depending on the durability requirements and the materials being handled. Hardox steel is often used for heavy-duty applications due to its high wear resistance.
  5. Shell Design: The shell design can be half-closed or fully-closed. Half-closed shells are suitable for handling coarse materials, while fully-closed shells are ideal for fine materials or underwater applications.
  6. Shell Edge: The edge of the shell can be straight or serrated. Serrated edges are more suitable for digging or handling tough materials, while straight edges are ideal for softer materials or loose soil.
  7. Attachments: Clamshell grab buckets can be attached to lifting equipment like cranes, excavators, and backhoes using hooks, chains, or quick couplers. The attachment type must be compatible with the specific equipment being used.
  8. Rotation: Some clamshell grab buckets have built-in rotators that allow for 360-degree rotation, improving maneuverability and efficiency during operation.
  9. Operating Pressure and Flow: Hydraulic and electro-hydraulic clamshell grab buckets require specific operating pressure and oil flow rates to function correctly. These specifications should match the equipment they will be attached to.


1. Unmatched Versatility and Efficiency The Clamshell Grab Bucket is a versatile and efficient attachment designed to provide users with the ability to handle and transport a wide range of materials. From construction debris and waste to loose aggregates and sand, this powerful tool is a must-have for any construction, excavation, or landscaping project.

2. Heavy-Duty Construction for Long-Lasting Durability Constructed from high-quality materials and featuring a robust design, the Clamshell Grab Bucket is built to withstand the toughest working conditions. Its wear-resistant steel teeth ensure long-lasting durability and optimal performance, making it a smart investment for those who demand the best from their equipment.

3. Easy-to-Operate Design for Enhanced Productivity The Clamshell Grab Bucket is designed with ease of use in mind, allowing operators to quickly and efficiently load, transport, and unload materials. Its smooth hydraulic operation ensures precise control, while the 360-degree rotation feature provides added flexibility and maneuverability in tight spaces.

4. Boost Your Project’s Efficiency and Profitability Investing in a Clamshell Grab Bucket can lead to significant time and cost savings on your project. By streamlining material handling processes and reducing the need for manual labor, you’ll be able to complete tasks more efficiently and increase your overall profitability.

5. Environmentally Friendly Solution The Clamshell Grab Bucket is an environmentally conscious choice for handling and transporting materials. By minimizing spillage and waste, this attachment helps to reduce your project’s environmental impact, making it a responsible choice for eco-friendly operations.

Product Application

Clamshell grab buckets are versatile and efficient attachments used in various industries and applications. Some common applications of clamshell grab buckets include:

  1. Construction: In construction projects, clamshell grab buckets are used for excavation, trenching, and material handling. They can handle materials such as soil, sand, gravel, and concrete debris, making them ideal for site preparation and cleanup tasks.
  2. Mining: In mining operations, clamshell grab buckets are utilized for material handling and excavation. They can handle materials such as coal, ore, and overburden, facilitating the extraction and transportation of minerals.
  3. Dredging: Clamshell grab buckets are often used in dredging applications for removing sediment and debris from water bodies, such as rivers, lakes, harbors, and canals. Fully-closed shell designs are particularly suitable for underwater applications, as they can prevent material spillage and water ingress.
  4. Port and Ship Operations: Clamshell grab buckets are used in ports and on ships for loading and unloading bulk materials like coal, grain, and fertilizer. They can be mounted on cranes or gantries for efficient material handling in these environments.
  5. Waste Management: In waste management and recycling facilities, clamshell grab buckets are used for handling various types of waste, such as municipal solid waste, scrap metal, and biomass. They can efficiently handle and sort these materials, facilitating the recycling process.
  6. Forestry: Clamshell grab buckets can be used in forestry applications for handling logs, wood chips, and other forestry by-products. They can be mounted on forestry cranes or loaders for efficient material handling in this industry.
  7. Agriculture: In agricultural applications, clamshell grab buckets can be used for handling materials such as feed, grain, and manure. They can be attached to loaders or tractors, making them a versatile tool for farmers.
  8. Landscaping: Clamshell grab buckets can be used in landscaping applications for excavating, grading, and material handling tasks. They are suitable for handling soil, mulch, and other landscaping materials, helping to create and maintain beautiful outdoor spaces.

If you’re looking for a high-quality clamshell grab bucket that delivers exceptional performance, durability, and safety, look no further than our top-of-the-line attachment. Order now and experience the difference for yourself!

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