Shanghai ENJUE Machinery Equipment Co., Ltd is one of the most experienced manufacturers and suppliers of mechanical dreding grab in China. If you're going to buy custom mechanical dreding grab made in China, welcome to get more information from our factory. For price consultation, contact us.
The mechanical dredging grab is a multifunctional tool widely used in engineering projects such as waterway dredging, riverbed desilting, and underwater salvage. It can effectively handle various types of materials, including silt, hard clay, iron plate sand, blasted reef rock, and even sunken ships.
The grab features high operational efficiency, a rugged and durable structure, ease of maintenance and operation, and the ability to perform reliably under harsh working conditions. The pulley system inside the grab is equipped with multiple seals to prevent water ingress and failure when operating in seawater and sediment at depths of several tens of meters. Currently, dozens of series of products are available, with lifting capacities ranging from 6 tons to 200 tons.
The mechanical dredging grab is suitable for crane configurations driven by single-rope, double-rope, or four-rope systems.
key features of mechanical dredging grab
1. High-Efficiency Underwater Excavation
5–30m digging depth | 1–10m³ bucket capacity | Cycle times 40% faster. That's high-efficiency underwater excavation.
2. Reinforced Heavy-Duty Construction
Double-layered side plates, replaceable wear teeth, impact-resistant hinges – this grab is reinforced for the toughest jobs.
3. Anti-Spill , Overload Protection
Retention bar design + mechanical load relief + dual/four-rope compatibility = safe, controlled operation every time.
4. Modular Adaptability , Maintenance
Quick-connect bucket modules, universal crane interface, underwater inspection ports – modular design that works as hard as you do.
technical parameters of mechanical dredging grab
|
Type |
SWL(t) | Volume(m³) | Dead weight(t) | Overall dimension(mm) | Rope dia.(mm) | ||||
| A | B | C | D | E | |||||
| EJ10-5-5 | 10 | 5 | 5.0 | 3635 | 3398 | 2430 | 3159 | 2450 | 24 |
| EJ16-6-6.2 | 16 | 6 | 6.2 | 3720 | 3483 | 2500 | 3250 | 2700 | 28 |
| EJ20-8-8 | 20 | 8 | 8.0 | 4008 | 3796 | 2600 | 3605 | 3000 | 28 |
| EJ28-9-10 | 28 | 9 | 10.0 | 4159 | 3960 | 3000 | 3753 | 3200 | 36 |
| EJ40-10-15 | 40 | 10 | 15.0 | 4596 | 4305 | 3300 | 3805 | 3200 | 40 |
| EJ10-7-5 | 10 | 3.3-5 | 5.0 | 3635 | 3398 | 2430 | 3159 | 2450 | 24 |
| EJ16-8-7 | 16 | 5-8 | 7.0 | 4008 | 3796 | 2600 | 3605 | 3000 | 28 |
| EJ20-9-8 | 20 | 6-10 | 8.0 | 4325 | 4268 | 2877 | 3957 | 3000 | 28 |
| EJ25-10-9.5 | 25 | 6-12 | 9.5 | 4110 | 3972 | 3030 | 3866 | 3500 | 36 |
application of mechanical dredging grab
Large Grabs
Bulk dredging operations
Small Grabs – Specialized Jobs
Hard-to-reach harbor locations
Small quantities in varying depths
Quay walls with wire/debris-damaged soil
Deep pit sand & gravel borrowing
Sand & gravel mining
Moraine areas (glacial debris with large stones)
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