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Clamshell Bucket

Clamshell bucket


Being a specialist in long reach solutions which cater predominately for dredging and deep excavation work, we complement our long reach solutions with various designs of clamshell buckets, providing our customers with unparallel value added 1 stop services. The clamshell bucket is a sophisticated articulating two-piece bucket mechanically hinged at the middle to form a claw-like appendage with an internal volume. It is attached by a hangar or bracket and uses ground engaging tool on its cutting edge to dig in a vertical direction. Clamshell buckets are commonly used in dredging, excavation or material handling, however, each application has its unique requirements and has to be designed optimally for maximum efficiency. We design, develop and manufacture both hydraulic and mechanical clamshell used on excavators and cranes.



  Hydraulic Clamshell


The CS series hydraulic clamshell bucket is designed to be attached onto an excavator. The dual or quad hydraulic cylinders/rams mounted on the outer rim of the bucket provide excellent digging force. The inner side of the bucket has a smooth surface for easy unloading of high viscosity material such as mud and clay, while the outer layer is reinforced with additional layer of wear strips. The bowl's radius has been optimized to match with the locus of the hydraulic cylinder/ram to deliver consistently full load for maximum productivity.

Hydraulic designs are meant for attaching to an excavator while the mechanical cable operated are designed to work with a broad range of cranes. The buckets are constructed with high tensile steel and wear resistant steel with capacity starting from 1 cubic meter and upwards.


hydraulic clamshell bucket



No. of Cylinder

Heaped Capacity

Approximate Weight




CS10HD 2 1.0 1.30 1,236 2,720
CS15HD 2 1.5 1.95 1,450 3,190
CS20HD 2 2.0 2.60 1,800 3,960
CS25HD 2 2.5 3.25 2,425 5,335
CS30HD 4 3.0 3.90 3,090 6,800
CS35HD 4 3.5 4.55 3,600 7,920
CS40HD 4 4.0 5.20 4,372 9,620

 Mechanical/Cable Clamshell


The fully mechanical clamshell is designed specifically to be used on a crane for large capacity dredging and digging applications. The opening and closing action is operated via cable. The inner side of the bucket has a smooth surface for easy unloading of high viscosity material such as mud and clay, while the outer layer is reinforced with additional layer of wear strips. The hanger is constructed with high tensile steel.


The design concept and criteria of a dredging versus a general purpose loading/unloading mechanical/cable clamshell differs greatly due to its differences in the nature of application and working condition. The geometry and weight distribution of a good clamshell design play a significant role in determining its overall efficiency.


mechanical clamshell bucket

cable clamshell


 Hydraulic Clamshell for Telescopic Arm


Telescopic dipper arms are gaining popularity where dip excavation work needs to be carried out in tightly spaced environment.  The  single centered mount hydraulic cylinder/ram clamshell bucket is specifically designed to be used on a telescopic dipper arm. The unique and powerful customized hydraulic cylinder/ram  delivers smooth opening and closing actions with strong penetration force which is a pre-requisite for an effective telescopic clamshell bucket.





  • Digging pits for ground construction work.

  • Ideal for digging and loading material in tight and limited spaces.

  • Material handling, loading and unloading industrial wastes, grains, sands, etc.

  • Heavy duty mechanical clamshell is ideal for dredging application by crane.





  • Designed for durability for all material loading needs in field of work towards higher productivity.

  • Specially designed tooth point are equipped on the cutting edge to provide higher strength and longer life.

  • Hydraulic rotation and knock-around manual rotation is available.



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