Shanghai ENJUE Machinery Equipment Co., Ltd is one of the most experienced manufacturers and suppliers of mechanical grab bucket in China. If you're going to buy custom mechanical grab bucket made in China, welcome to get more information from our factory. For price consultation, contact us.
The mechanical grab bucket is a rope-operated device that relies on wire rope tension and its own dead weight to open and close the jaws. With no external power supply required, it can be deployed directly from water and works seamlessly with single-hook cranes, ship-mounted cranes, traveling cranes, and similar equipment.
Design Drawing


Main Technical Parameter
Below are the main technical parameters of 15T 9CBM Single Rope Grab Bucket which we designed according to customers' requirements, for reference only;
|
Model |
SRG15-9-6.5 |
|
|
Crane SWL (t) |
15 |
|
|
Grab SWL(t) |
8.5 |
|
|
Grab dead weight(t) |
6.5 |
|
|
Grab volume(m3) |
9 |
|
|
Piled density(t/m3) |
0.9 |
|
|
Ropes dimension(mm) |
28 |
|
|
Sheave dimension(mm) |
560 |
|
|
Ropes multiple |
3 |
|
|
Parameter(mm) |
A |
4586 |
|
B |
6450 |
|
|
C |
3350 |
|
|
D |
4280 |
|
|
E |
3000 |
|
|
Opening & Closing up miles (mm) |
200 |
|
|
High in use (m) |
12.5 |
|
The difference between single rope grab and double rope grab
Single-Rope Grab Bucket
This bucket performs all functions - hoisting, lowering, opening/closing, and positioning - through a single wire rope. Its streamlined, uncomplicated design simplifies rigging on compatible cranes and speeds up installation. Well-suited for small- to medium-scale bulk material tasks, it adapts easily to various site conditions, operates with great flexibility, and demands minimal upkeep.
Double-Rope Grab Bucket
This bucket uses two dedicated wire ropes: one handles hoisting while the other controls the jaw mechanism. The result is a balanced, consistent clamping force with precise handling and significantly higher payload capacity. Built for heavy-duty, high-frequency continuous loading and unloading, it delivers superior productivity - making it the go-to choice for high-volume terminals, large storage yards, and other demanding operations.
Key Distinctions
The two designs differ primarily in rope layout, control logic, load capability, and ideal use cases. The single-rope variant wins on simplicity, lower cost, and quick deployment - fitting standard medium and light-duty work. The double-rope variant separates the drive lines, distributes stress more evenly, and pushes the load ceiling higher, delivering greater stability and throughput - making it the preferred solution for heavy-load, high-cycle environments.



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