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Multi-flap Crane Grab Bucket

Type: Electric Hydraulic Grab for Crane
Number of flaps: 4~8 flaps
Grab capacity: 5~30 m³ (depending on the specific model)
Applicable cranes: Gantry crane, overhead crane, port crane, etc.
Overview
Features
Parameter
Application
Overview
Multi-flap crane grab bucket is a heavy-duty attachment designed for efficient grabbing of irregular bulk materials. It is widely used in scrap steel recycling, garbage disposal, mining and port operations. The grab bucket adopts a 4-8-flap jaw structure, which has stronger material adaptability and grabbing stability than the traditional double-flap grab bucket. It is especially suitable for handling complex materials such as scrap metal, construction waste, and industrial waste. Its modular design allows the type of jaw to be replaced according to different working conditions, greatly improving the utilization rate of the equipment.

The product uses high-strength wear-resistant steel to manufacture the jaws, and the key stress-bearing parts are reinforced to ensure the structural reliability under heavy load impact. The optimized hydraulic drive system provides balanced closing force and penetration force, allowing the grab bucket to easily bite large pieces of material. Some high-end models are equipped with intelligent pressure regulation function, which can automatically adapt to different material densities to prevent overload damage. In addition, the unique staggered jaw layout effectively reduces the material shedding rate, and improves the operating efficiency by at least 15% compared with traditional grab buckets.

The multi-petal grab demonstrates excellent performance in scrap steel processing plants, where its sharp claws can pierce through compacted waste piles, significantly improving loading efficiency. In the waste incineration power generation field, the special anti-corrosion coating version can withstand corrosive environments. The port version has enhanced sealing to reduce the loss of seaborne cargo.
Features
The multi-flap crane grab bucket offers significant advantages in material handling efficiency and versatility. Its innovative multi-flap design ensures a wider grabbing range and more uniform force distribution, enabling efficient loading of bulk materials like coal, grain, or minerals with minimal spillage. The synchronized flap mechanism provides faster cycle times compared to traditional grabs, while the robust construction ensures durability in heavy-duty operations. Its adaptability to various crane systems and ability to handle diverse material types (from fine powders to coarse aggregates) make it ideal for ports, construction sites, and industrial facilities. The design also promotes better material containment during lifting, reducing waste and environmental impact.
Efficient grabbing, faster operation
The multi-petal grab adopts a synchronous opening and closing design, with a large grabbing range and uniform force. It can quickly load and unload bulk materials such as coal, ore, and grain, with a high single operation volume, significantly improving production efficiency.
Strong adaptability and wider application
The unique petal structure can flexibly adjust the grabbing angle and force, which is suitable for materials of different densities and particle sizes (such as powder, granules or blocks), meeting the needs of multiple scenarios such as ports, mines, and buildings.
Good sealing, environmental protection and anti-leakage
When closed, the multi-petal fits tightly, reducing material spillage and dust overflow, reducing losses and environmental pollution, and is especially suitable for working environments with strict environmental requirements.
Strong structure and low maintenance cost
Made of high-strength wear-resistant materials, optimized design of key components, strong impact resistance, low failure rate, long-term use can still maintain stable performance, greatly reducing maintenance time and cost.
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Parameter
Parameter category Parameter description
Model range Depending on the capacity, common models: 5m³, 8m³, 10m³, 12m³, 15m³, 20m³ (customizable)
Applicable materials Bulk materials such as coal, ore, sand and gravel, grain, scrap steel, industrial waste, etc.
Grab capacity 5~30 m³ (depending on the specific model)
Working level Comply with FEM/ISO standards, usually M5~M8 (medium-heavy to heavy duty)
Rated load 5~50 tons (depending on the size of the grab and the crane match)
Opening and closing method Hydraulic drive/electric wire rope control (optional)
Number of flaps 4~8 petals (common 6-petal design to ensure uniform grabbing and sealing)
Material High-strength wear-resistant steel (Q345B, Hardox, etc.), key parts are strengthened
Sealing The gap after multi-petal closure is <5mm to reduce material leakage
Applicable crane Gantry crane, overhead crane, port crane, etc.
Application
Multi-flap crane grab bucket is widely used in bulk cargo loading and unloading and high-efficiency material handling, especially in ports, mines, power plants, steel plants, garbage disposal stations and large storage and logistics centers. At ports and terminals, it efficiently loads and unloads bulk cargo such as coal, ore, and grain, and reduces dust and leakage with excellent sealing to meet environmental protection requirements; in mines and power plants, it can easily grab irregular or high-density materials such as gravel, ore, and industrial waste slag; in the steel industry, it is used for the transfer of scrap steel and slag, and its high-strength structure can withstand the impact of sharp materials; and in the field of garbage disposal, the multi-flap design can firmly grab solid waste and renewable resources and improve sorting efficiency. In addition, the grab bucket is suitable for various types of bridge, gantry and marine cranes, with high flexibility, and is one of the core equipment of modern bulk material handling systems.
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Related Products

Double-flap Crane Grab Bucket

Grab capacity
0.5m³ ~ 15m³ (customized design supported)
Applicable cranes
Gantry crane, overhead crane, port crane, etc.
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