Crane grab bucket

A claw bucket is a specialized lifting device used on cranes to grab bulk materials (such as coal, ore, sand, gravel, and waste). It features a compact structure, quick opening, and high grab efficiency. In ports, mines, construction sites, and other locations, the crane claw bucket (also known as a grab bucket) has become a core tool for handling bulk materials due to its efficient and precise grabbing capabilities. It rapidly loads and unloads materials by opening and closing its jaws, making it both a powerful tool for improving operational efficiency and a key component in ensuring safe production.

Grab Classification

Double rope grab

Electric motor grab 

Wireless remote control clamshell grab

Singlr rope grab

Orange peel grab

Four rope grab

Electro hydraulic orange peel grab

Electro hydraulic clamshell grab

Wood grab

Lightweight clamshell grabs are widely used in single girder overhead crane applications, particularly in lightweight environments like construction sites and warehouses. For example, a single-girder crane equipped with a single-rope mechanical grab can efficiently grab bulk materials like sand, gravel, and cement, enabling precise stacking and loading. Its simple structure and low cost make it a preferred solution for small and medium-sized projects.

Double girder overhead cranes are often equipped with heavy-duty grab buckets to meet the high-intensity operations required in steel mills, mines, and other locations. For example, a double-girder crane equipped with a hydraulic multi-flap grab bucket can precisely separate high-density materials such as scrap steel and ore. The hydraulic drive ensures smooth movement and minimizes material loss. The double-girder structure also provides greater stability, ensuring safe heavy-duty operations.

Gantry cranes, core equipment at ports and terminals, are often paired with electric-hydraulic grabs to rapidly load and unload bulk cargoes such as coal and ore. For example, a gantry crane equipped with a four-rope electric-hydraulic grab can handle thousands of tons of material per hour, significantly improving port throughput efficiency. Its corrosion-resistant design is well-suited to humid coastal environments, extending equipment life.

Hydraulic Grab

Hydraulic grab for crane features an opening and closing structure powered by hydraulic cylinders. These grab buckets utilize multiple jaw plates that open and close to ensure efficient and precise material handling. They are highly automated, powerful, and suitable for heavy-duty operations.

Applications:

• Efficiently moving scrap metal in recycling and steel plants.
• Sorting and handling garbage in waste treatment facilities.
• Lifting large mineral ores and slag in mining and smelting operations.
• Managing large debris and waste on construction sites.

Mechanical Grab

Mechanical crane grab buckets do not come with their own opening and closing structure. Instead, their opening and closing are controlled by a cable drum located on the crane’s trolley. They are simple, cost-effective, and particularly suitable for handling loose and bulk materials.

Applications:

• Suitable for handling coal, coal powder, slaked lime, blast furnace slag, etc.
• Capable of handling small mineral stones such as iron ore, magnesium ore, copper ore.