Shanghai ENJUE Machinery Equipment Co., Ltd is one of the most experienced manufacturers and suppliers of mechanical clamshell grabs in China. If you're going to buy custom mechanical clamshell grabs made in China, welcome to get more information from our factory. For price consultation, contact us.
Mechanical clamshell grabs are designed for seamless integration with mobile port cranes, floating cranes, transfer cranes, crawler cranes, and other equipment, enabling highly efficient handling of bulk materials. We offer a wide selection of clamshell grab buckets suitable for various applications and materials of different weights, including grain, gravel, soybeans, clinker, coal, pebbles, sand, fertilizer, wood chips, nickel ore, bauxite, iron ore, iron pellets, metal ores, and other bulk materials. In addition, we provide customized grab buckets manufactured to meet customers' specific requirements.
Type of mechanical clamshell grabs
The single rope mechanical clamshell grab is specifically designed for cranes equipped with a single hoisting drum, using the touchdown action to open and close the bucket. This type of grab is typically used for underwater operations in conjunction with single-cable shipboard cranes.
The two-rope mechanical clamshell grab requires a crane equipped with two separate hoisting drums-one for the holding rope and one for the closing rope. This type of grab bucket is commonly used in ports, docks, and industrial sites for loading and unloading a variety of bulk materials, including sand, gravel, coal, iron ore, and powder.
The four-rope mechanical clamshell grab is designed for heavy-duty material handling, featuring two holding ropes and two closing ropes. The holding ropes support the bucket's weight, while the closing ropes provide the force required to open and close the bucket.
Features of mechanical clamshell grabs
High Productivity
Robust design and optimized rope arrangement deliver exceptional stability. The grab stays perfectly balanced under heavy loads, enabling smooth opening/closing, consistent penetration, and full-capacity loading every cycle-boosting overall efficiency.
High Safety
Mechanical limiting devices and wear-resistant components prevent accidental opening, tilting, and component failure. Fully compliant with industrial safety standards for secure operation of equipment and personnel.
Long Lifespan & Low Maintenance
High-strength abrasion-resistant steel provides excellent impact resistance and reduced wear. The simple, durable structure minimizes failure points, allows easy inspection, and extends service life while cutting long-term operating costs.
Advantages of mechanical clamshell grabs
High Efficiency & Productivity
Fast opening and closing with full bucket loading every cycle improves handling speed and reduces operation time.
Stable & Safe Operation
Optimized structure prevents tilting during lifting; reliable mechanical design avoids accidental unloading for safe on-site operation.
Robust & Long Service Life
High-strength wear-resistant steel resists impact and abrasion, reducing component damage and significantly extending service life.
Low Maintenance & Easy Operation
Simple mechanical structure minimizes failure points and daily inspection, requiring less frequent repair and lowering long-term costs.
Applications of mechanical clamshell grabs
Mechanical clamshell grabs are indispensable for industrial material handling. Their robust structure and strong gripping force make them highly versatile, capable of handling a wide variety of bulk materials-including sand, gravel, crushed stone, grain, coal, coke, iron ore, bauxite, limestone, as well as soil, silt, sediment, and construction debris. As a result, they are widely used in ports, jetties, road construction, and other bulk loading and unloading scenarios.
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