The double-flap grab bucket is a widely used crane attachment for bulk material handling. It is commonly installed on bridge cranes, gantry cranes, and other lifting equipment.
The grab bucket mainly consists of lifting wire ropes, guide rope wheels, fixed pulleys, upper bearing beams, movable pulleys, lower bearing beams, support rods, and bucket bodies. The two symmetrical bucket flaps are the main working components responsible for opening and closing operations.
The lifting, lowering, opening, and closing movements of the double-flap grab bucket are controlled by steel wire ropes through the crane trolley system. It is designed for efficient grabbing, loading, unloading, and transferring of various loose bulk materials.
With mature manufacturing technology, the grab bucket adopts high-quality bearing steel bushings at hinge points and thickened edge plates to improve wear resistance, durability, and service life.
Its simple structure and strong adaptability allow it to handle materials of different shapes and sizes. Customized designs are available to match different crane types and specific working conditions.
The double-flap grab bucket is widely used in industries requiring efficient bulk material handling.
Port and Terminal Bulk Cargo Handling
Used for loading and unloading ships, trucks, and storage yards, handling bulk materials such as coal, ore, sand, grain, fertilizer, and salt.
Thermal Power Plants
Applied for coal unloading from ships or trucks and transferring coal to storage yards.
Steel and Metallurgical Industry
Used for loading, unloading, and transporting iron ore, pellets, coke, limestone, and other steelmaking raw materials.
Cement Plants
Suitable for handling limestone, clay, coal, and other raw materials required for cement production.
Mining Industry
Used for transporting and loading ores, concentrates, and tailings with medium particle sizes.
Construction Sites
Applied for grabbing and transferring sand, gravel, crushed stone, and other construction materials with high efficiency and reliable performance.
Inland River Terminals and Logistics Hubs
Used for regional bulk cargo transfer, loading, unloading, and transportation of materials such as grain, fertilizer, and building materials.
Strong grabbing capability for irregular-shaped bulk materials.
Simple control system, easy operation, and reliable performance.
Lightweight structure compared with single-flap or multi-flap grab buckets, while maintaining sufficient gripping force.
High full grab rate of more than 95%, improving handling efficiency.
High adaptability, easy installation, and compatibility with different lifting equipment.
Simple overall structure with standardized components, making maintenance and repair convenient.
Durable design with high-strength materials for long service life.


| Parameter Item | Double-flap Grab Bucket |
|---|---|
| Product Name | Double-flap Grab Bucket |
| Material | Steel |
| Rated capacity (ton) | 5-16 ton |
| Pulley diameter (mm) | 400-600 mm |
| Steel wire rope diameter (mm) | 16-24 mm |
| Grab bucket weight (ton) | 2.30-7.96 ton |
| Grab bucket closing height (m) | 2.8-4.5 meter |
| Grab bucket opening height (m) | 3.1-5.3 meter |
| Grab Width (m) | 1-2.4 meter |
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