Radio-Controlled Single-Rope Grab
Efficient and reliable single-rope rehandling grab with radio control for various bulk materials. Unique two-cylinder design for superior performance.
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Why Choose the Radio-Controlled Single-Rope Grab?
Full control, advanced technology, and superior performance with unique 2-cylinder design
Radio Control
Full control over opening and closing from the cab for maximum efficiency and safety.
2-Cylinder Design
Perfect symmetry and better guidance ensure a longer lifespan and lower maintenance than single-cylinder designs.
Fast Work Cycles
Optimized movements for maximum productivity and minimal downtime during loading and unloading.
Higher Reliability
Redundancy with 2 cylinders means that limited operation is still possible even in the event of a malfunction of one cylinder.
Robust Construction
High-quality steel grades and reinforcements for extreme durability in heavy industrial environments.
Controlled Torque
Precise control over when and how quickly the undercarriage closes, resulting in less shock load.
Product Description
The radio-controlled single-rope grab from Grippera combines simplicity with advanced control technology. This single-rope bucket grab operates on a single hoist line and uses radio control for opening and closing, ensuring maximum flexibility and control during operation.
Unique 2-Cylinder Design: In contrast to many competitors who use one-cylinder designs, Grippera deliberately opts for a two-cylinder configuration. This provides significant advantages: Perfect Symmetry (equal load distribution left and right prevents skewing and twisting), Better Guidance (the cylinders act as additional guides, resulting in less wear), Higher Reliability (in the event of a single cylinder malfunction, limited operation remains possible), Controllable Closing Force (precise regulation of the closing process reduces shock loading), and Possibility for Larger Capacities (stable up to 16 m³ and larger, while one-cylinder designs are often limited to 10-12 m³).
Radio Control for Optimal Operation: The integrated radio control gives the crane operator full command of the grab regardless of cable position. This results in increased efficiency through faster work cycles, better safety by direct control from the cab, flexibility across various working conditions, and reduced training time for operators.
Applications: This grab is ideal for a variety of bulk materials, including cereal grains, corn, and other agricultural products, coal and coke, ores and minerals, industrial bulk materials, and construction materials such as sand and gravel.
Technical Specifications: Each grab is custom-made according to your specific requirements and crane capacity. We are happy to advise you on the optimal configuration for your application.
2-Cylinder Design: Our Technical Advantage
Where many competitors use a single-cylinder design, we deliberately choose a double-cylinder setup. This yields concrete advantages in performance, reliability, and lifespan.
Perfect Symmetry
- •Left = right load distribution
- •Undercarriage stays square
- •No twisting or skewing
- •Eccentric loading
- •Skewed pulling
- •Higher wear on guides
Better Undercarriage Guidance
The cylinders act as additional guides and dampers, which ensures:
- Less load on guide columns
- Longer lifespan of pins and bearings
- Reduced structural fatigue
Higher Reliability
If 1 cylinder fails: limited operation still possible
In case of failure: complete grab shutdown
Controllable Closing Torque
With 2 cylinders we precisely control:
- When the undercarriage starts to grip
- How fast the closing proceeds
- Less shock loading on material
- Lower peak stress on mechanical components
Larger Grabs Possible
1-Cylinder Design
Often limited to ±10–12 m³
2-Cylinder Design
Stable up to 16 m³ and larger
Lower Structural Requirements
Thanks to symmetrical loading:
- Less torsion = lighter frames possible
- Longer construction lifespan
- Lower maintenance costs
- Better return on investment
How it Works
In a mechanical single-rope grab with two cylinders, the cylinders control the closing, but the crane provides the force. This makes the system robust and scalable for larger capacities without the disadvantages of single-cylinder designs.
Applications
Our mechanical orange peel grabs are designed for various industries and applications
Scrap Processing
Ideal for light, mixed, and heavy scrap, rough iron, and large metal components in recycling facilities.
Waste & Household Waste
Ideal for household waste, industrial waste, and large pieces of recyclable material.
Rocks & Stones
Suitable for large rocks, boulders, cobblestones, and other irregular materials.
Timber Grabs & Biomass
Efficient handling of wood chips, tree trunks, and other biomass materials.
Dredging Operations
Special versions available for dredging and earthworks operations.
Crane Operations
Versatile use in ports for various bulk materials and large objects with wire cranes.
FEA Structural Analysis
Every single-rope grab is validated through Finite Element Analysis (FEA) to ensure maximum safety and performance in your specific application.
FEA Analysis Video
Safety Factor 2.0 Minimum
Double the working load limit for exceptional safety margins according to EN 13001.
Full FEA Documentation
Receive detailed FEA report with stress distributions, deformation analysis and safety calculations.
Von Mises Stress Analysis
Complete stress analysis showing maximum stress points and material utilization throughout the structure.
Multiple Load Case Validation
Analysis includes lifting, closing under load, tilting and impact scenarios for comprehensive validation.
Models & Custom Options
Every project is unique. That's why we offer extensive customization options for optimal performance.
Radio Control
- Wireless operation from crane cabin
- Frequency adjusted to local regulations
- High-quality batteries for long operating duration
- Quick loader for minimal downtime
- Robust and waterproof control panel
Sizes
- Open chutes for coarse bulk materials
- Closed shells for fine materials
- Environmental Covers for Dust-Free Operation
- Wear Plates in HARDOX 500 Steel
- Custom Profiles by Material Type
Capacity & Configuration
- Volumes from 0.5 m³ to 16 m³+
- Customized gripping force per application
- Adjustable opening and closing speed
- Capacity reduction spacers
- Calculated based on crane capacity
Materials & Construction
- High-quality construction steel
- Hardox wear plates for long lifespan
- Maintenance-free guides and hinges
- FEA calculations and CE certification
- Corrosion-resistant coating available
Battery & Charging System
- Lithium-ion batteries for optimal performance
- Average 8-12 hours of operating time
- Fast charger for 2-3 hour charging time
- Remote control battery indicator
- Replaceable battery units available
Custom Solutions
- Custom Grab Geometry
- Special coatings for aggressive materials
- Additional reinforcement for heavy conditions
- Integration with existing crane systems
- Custom Calculated FEA Analyses
Frequently Asked Questions
What is a single-rope grab exactly?
A single-rope grab is a self-closing clamshell grab that operates on a single hoist line using radio control for opening and closing, providing maximum flexibility and control during operation.
What are the benefits of radio control for a single-rope grab?
Radio control provides full command of the grab regardless of cable position, resulting in faster work cycles, better safety through direct control from the cab, and flexibility across various working conditions.
Why should I choose single-rope instead of traditional two-rope or four-rope?
Single-rope grabs offer simplicity with one cable, radio-controlled operation for precise control, and our unique 2-cylinder design provides superior reliability and performance compared to competitors' 1-cylinder designs.
How long does the battery last and how do I charge it?
The lithium-ion batteries provide 8-12 hours of operating time on average. The fast charger recharges the batteries in 2-3 hours, minimizing downtime. Battery indicators on the remote control show remaining charge.
Is a single-rope grab reliable enough for daily intensive use?
Yes, our 2-cylinder design provides redundancy - if one cylinder malfunctions, limited operation is still possible. Combined with robust construction and maintenance-free components, our grabs are designed for intensive daily use.
Ready to Start Your Project?
Our grab specialists are happy to help you select the right two-rope or four-rope orange peel grab for your application. Request a non-binding quote today.
Quote Request
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Consultation
The quote is discussed with you to find the best solution
Quote Delivery
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Order
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Order Tracking Portal
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Production & Transport
The grab is produced and shipped to you
Aftersales Support
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Why Companies Choose Grippera
CE Certified
Compliant with all European safety standards
Expert Support
Technical support within 24 hours
Europe
Fast delivery throughout Europe
25+ Years Experience
Specialist in Mechanical Grabs