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Technical Specifications – 2–4 Rope Mechanical Rock Grabs
NG-MRG series rock grabs are designed for handling bulk materials such as stone, ore, and heavy waste using 2-rope and 4-rope crane systems. Engineered for durability and impact resistance, these clamshell-type mechanical grabs are ideal for ports, construction yards, and mining operations.| Model | Capacity (m³) | Shell Width (mm) | Closed Height (mm) | Weight (kg) | Rope System | Application |
|---|---|---|---|---|---|---|
| NG-MRG1000 | 1.0 | 1100 | 1600 | 1300 | 2-rope | Stone, Sand |
| NG-MRG2000 | 2.0 | 1400 | 1900 | 2000 | 2-rope | Gravel, Scrap |
| NG-MRG3000 | 3.0 | 1700 | 2200 | 2800 | 4-rope | Ore, Rock |
| NG-MRG5000 | 5.0 | 2000 | 2500 | 4000 | 4-rope | Bulk Rock, Heavy Waste |
Mechanical Two-Rope Rock Grabs – Reliable Clamshells for Crane Operations
NG Attachments designs and manufactures mechanical two-rope rock grabs tailored for crane operations in ports, mining zones, and large-scale construction sites. These grabs are engineered to handle bulk materials such as rocks, gravel, scrap, and heavy aggregates with precision and durability—without the need for hydraulic or electric systems. Our two-rope clamshell buckets operate with a lifting and closing cable, allowing fast cycle times and deep material penetration. The high-strength body structure, wear-resistant cutting edges, and balanced shell geometry ensure excellent performance and long service life, even in the harshest working environments.Key Features
- Two-Rope System: Fully mechanical operation using standard crane cables
- Robust Frame: Constructed from ST52 or Hardox for high wear resistance
- High Volume Capacity: Options from 0.5 m³ to 10 m³ for heavy-duty tasks
- No Hydraulics: Simple design with minimal maintenance needs
- OEM Fit: Suitable for gantry, portal, or crawler cranes
Application Areas
- Rock and stone loading at quarry sites
- Bulk cargo unloading at port terminals
- Scrap metal lifting at recycling yards
- Aggregate handling for concrete batching plants
Why Choose NG?
- Precision Engineering: Custom shell designs and pin spacings available
- Proven Performance: Trusted by crane operators across Europe, MENA, and Asia
- Fast Delivery: Stock availability and export-ready packaging
- After-Sales Support: Technical drawings and user guidance included
