Mechanical Grab Bucket

Mechanical grab bucket types include single-rope, double-rope, and four-rope variations. The grab is perfect for cranes with hoisting drums, and useful for handling bulk cargo. OUCO mechanical technology for opening and closing grab jaws is original and efficient.
Also, four-rope mechanical grab buckets work with four-line-operated cranes: two lines for holding, and two for closing the grab.
We use highly wear-resistant steels to manufacture our mechanical grabs, like NM400, NM500, Hardox400, and Hardox500. OUCO mechanical grabs are perfectly designed for handling sand, gravel, wood chips, fertilizer, cement, and other bulk materials.
Why Choose OUCO As Your Mechanical Grab Bucket Manufacturer?
Now, OUCO mechanical grab buckets are widely used in the marine, electricity, vessel, metallurgy, preservation, and transportation industries.
We collaborate with leading brands and always inspect our products for quality. You can be sure of the reliable performance of our mechanical grab buckets.
With competitive pricing and delivery in less than 3 months, many companies prefer us for their needs.

Features Of OUCO Mechanical Grab Bucket
- Support higher material density
- Lighter dead weight, higher capacity
- 40CrMo4 Steel Material pin shaft, bolts, milling cutters
- Wear-resisting steel plate Knife edge
- Excellent sealing properties
- High-temperature resistance pulley
- Better cylinder protection
- C5M coating, against corrosion
- Emergency brakes and protection devices


Advantages of Mechanical Grab Bucket
Mechanical grab buckets are cheaper than hydraulic grab buckets, easy to operate, learn and use. In addition, it has a strong closing force, a long service life and is suitable for all working conditions. Moreover, the simple construction also allows it to withstand High-intensity continuous work without the need to maintain the machine, only the wire rope.
At OUCO, we accommodate all custom requests for mechanical grabs, whether orange peel or clamshell type, we also offer you the fastest delivery time and ABS, CCS, BV certification.
Latest Finished Mechanical Grab Bucket
This is a 2 peel mechanical grab bucket, which can be used for coal handling, sand loading and unloading, and can be designed with a self-weight of 550kg~1700kg, use NM400 wear-resistant steel.
This mechanical grab has a capacity of 3m³, suitable for material specific gravity of 0.8t/m³ and a dead weight of 2.6t, and is suitable for overhead cranes. Of course, you can also contact us for customized grabs.
12 CBM Dredging Grab is suitable for working with crane, connected by ring and wire rope, without hydraulic system and cylinder, not easy to damage, suitable for a variety of working conditions.
This is a double-rope grab, which is controlled by wire rope to open and close during grab operation, with simple structure, not easily damaged and easy to maintain.
The Mechanical Grab Bucket, with a capacity of 27 CBM, is suitable for loading and unloading sand, gravel and coal. It is very durable, You just need to do the maintenance of the wire rope.
The OUCO Orange Peel Mechanical Grab Bucket is designed with a wide opening and a high dead weight,The slewing function can be provided according to your needs, suitable for grabbing bulk coal and grain.
- Example Video
- CAD Drawing
- Certification
- Production Process
- Case

Related Product
Mechanical grab has no independent power source—no motors, no pumps, and no complex electronics. It draws all its power directly from your crane’s wire ropes. It’s a pure mechanical beast designed for high-volume, heavy-duty work.
- Zero-Failure Design: The structure is incredibly simple—primarily composed of high-strength welded steel, pins, and cables. Fewer moving parts mean a near-zero failure rate.
- Extreme Durability: These grabs thrive where others fail. They are built for the harshest environments:
- High Temperature Resistance: No hydraulic oil to overheat.
- Debris Proof: Dust and moisture won’t clog the system.
- Impact Ready: Specifically reinforced for the “slam and grab” reality of ports and mines.
- Gravity-Powered Grip: It uses its own massive weight to generate clamping force. Once it bites into materials like coal or ore, it won’t slip.
- Precision Seal: Despite its rugged build, the bucket edges are engineered for excellent sealing and distortion resistance.

We don’t just sell “off-the-shelf” products; we build the grab to match your specific crane and brand identity. You can customize:
- Technical Specs: Dead weight, bucket shape, and wire rope configuration (sheave numbers).
- Crane Interface: We adapt the connection point to fit your specific lifting equipment perfectly.
- Branding: We can paint it with any color you want, and we can even weld your Logo directly onto the body.
- Accessories: Any specialized add-ons you need for your operation.
Mechanical grabs are your “go-to” solution for environments where power is unavailable or reliability is the top priority. Because they don’t rely on sensitive motors or cables, they excel in rough, high-volume operations.
Here are the five most common scenarios where we deploy these solutions:
1. Port Logistics (Bulk Cargo)
This is the most traditional use case. Mechanical grabs are the industry standard for rapidly moving large volumes of loose material like coal, grain, and iron ore from ship to shore.
2. River Dredging (Underwater)
Since they require no electric power, these grabs work perfectly underwater. They are ideal for clearing silt, sand, and submerged obstacles from riverbeds without the risk of electrical failure.
3. Building Demolition
These grabs are built tough. They can handle the shock loads of grabbing jagged concrete, rebar, and brick to clear construction sites quickly.
4. Timber Handling
In forestry and processing plants, specialized mechanical grabs securely grip logs and tree trunks, streamlining the loading and stacking process.
5. Special Excavation
When paired with excavators, they are excellent for digging trenches or loading materials in confined spaces where standard buckets might struggle to grab effectively.

To give you the best recommendation, I first need to know if your crane has a single drum or a double drum, as mechanical grabs rely entirely on your crane’s ropes. Once we know your crane fits, here is the simple rule of thumb:
✅ Choose a Mechanical Grab If:
♦ You prioritize ROI: You want the most cost-effective and durable solution with low maintenance costs.
♦ You work in “Rough” Industries: You are handling bulk port cargo (coal, grain) or doing heavy demolition.
♦ You need a “Workhorse”: You want a simple tool that uses gravity and weight to dig in, without worrying about sensitive electronics.
❌ Choose an Electric/Hydraulic Grab If:
♦ You need Precision: You require precise control for tasks like sorting waste or positioning materials carefully.
♦ You handle Delicate Cargo: You are moving fragile materials that might be crushed by the full force of a mechanical grab.
♦ You have High Cycle Speeds: You need frequent, rapid start-stop operations that require an independent power source.
With proper maintenance, you can expect a service life of 10 to 20 years.
Why so long? We use superior, high-strength steel that resists wear better than standard materials.
Lifespan depends on usage intensity, but we help you maximize it. We provide annual “health check” visits and expert maintenance guidance to keep your grab running for decades.
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Port Application: 7 Mechanical Grabs Delivered To Thailand Client
7 mechanical grabs and 3 remote control grabs ready for shipment to Spain!



