Type ÜNFLEX PUR-C-HF Crane Cable: Ultimate Flexibility for Modern Crane Festoon Systems
In the demanding world of industrial crane operations, cable reliability is crucial for maintaining operational efficiency and safety. Introducing the Type ÜNFLEX PUR-C-HF Crane Cable, specifically engineered for crane festoon systems.
This high-flexible cable combines superior mechanical properties with exceptional durability, making it the ideal choice for modern crane applications.

Feature | Benefit | Industry Impact |
High-Flexible Design | Superior bending performance | Extended service life |
PUR Sheath Technology | Enhanced mechanical protection | Reduced maintenance costs |
Halogen-Free Construction | Improved safety in fire conditions | Better environmental compliance |
Festoon-Optimized Design | Smooth operation in track systems | Increased operational efficiency |
Advanced Strain Relief | Reduced mechanical stress | Lower replacement frequency |
Technical Specifications
Component | Material | Performance Features |
Conductor | Fine-stranded copper | Enhanced flexibility and current capacity |
Insulation | Special compound | Superior electrical properties |
Sheath | PUR compound | Excellent mechanical protection |
Strain Relief | Aramid yarn | Additional mechanical strength |
Flexibility Class | Class 6 | Ultimate flexibility |
Performance Characteristics
Parameter | Rating | Standard |
Minimum Bending Radius | 7.5 x D (D = cable diameter) | Dynamic use |
Tensile Load | Up to 15 N/mm² | Maximum working load |
Travel Speed | Up to 240 m/min | In festoon systems |
Acceleration | Up to 2 m/s² | Operational capacity |
Operating Cycles | > 5 million | Test verified |
Applications and Usage Scenarios
Our ÜNFLEX PUR-C-HF Cable excels in:
Industrial Crane Systems
Container cranes
Gantry cranes
Bridge cranes
Tower cranes
Port cranes
Material Handling Equipment
Automated storage systems
Conveyor systems
Lifting equipment
Transfer vehicles
Stacker cranes
Environmental Factor | Rating | Performance Level |
Temperature Range | -40°C to +90°C | Outstanding |
Oil Resistance | Excellent | Superior |
UV Resistance | Very Good | Long-lasting |
Weather Resistance | Excellent | All-weather capable |
Chemical Resistance | Good | Industrial grade |
Festoon System Compatibility
Parameter | Specification | Notes |
Track Type | C-track/I-beam | Universal compatibility |
Loop Depth | Optimized | Reduced space requirement |
Track Spacing | Flexible | Adaptable to existing systems |
Installation Method | Push-pull compatible | Easy installation |
Comparative Analysis
Market Position vs. Standard Cables
Feature | ÜNFLEX PUR-C-HF | Standard Crane Cables |
Flexibility | Superior | Basic |
Cycle Life | > 5 million | < 2 million |
Temperature Range | -40°C to +90°C | -20°C to +60°C |
Chemical Resistance | Excellent | Good |
Installation Ease | Enhanced | Standard |
Cross Section (mm2) | Overall Diameter Min. – Max. (mm) | Approximate Weight (kg / km) |
4 x 1,5 | 10,8 – 12,0 | 232 |
5 x 1,5 | 10,9 – 12,1 | 260 |
7 x 1,5 | 10,9 – 12,1 | 270 |
12 x 1,5 | 15,0 – 16,2 | 360 |
18 x 1,5 | 15,4 – 17,2 | 424 |
4 x 2,5 | 12,1 – 13,2 | 248 |
5 x 2,5 | 12,8 – 14,0 | 268 |
12 x 2,5 | 17,0 – 18,8 | 520 |
18 x 2,5 | 17,5 – 19,2 | 630 |
5 x 4 | 13,8 – 15,0 | 344 |
4 x 6 | 15,1 – 16,3 | 426 |
4 x 10 | 18,4 – 19,6 | 636 |
4 x 16 | 21,2 – 22,5 | 932 |
4 x 25 | 24,5 – 26,2 | 1400 |
4 x 35 | 29,6 – 31,6 | 1820 |
4 x 50 | 35,1 – 37,6 | 2510 |

• Rated Voltage: 0.6 / 1 kV
• Max. Operating AC Voltage: 0.7 / 1.2 kV
• Max. Operating DC Voltage: 0.9 / 1.8 kV
• AC Test Voltage: 3.5 kV
• Min. Bending Radius: 6 x D (fixed application), 8 x D (mobile applications)
• Current Carrying Capacities: According to DIN VDE 0298-4
• Max. Surface Temperature: Fixed installation – 50°C up to +80°C
• Max. Temperature at the Conductor: Mobile operation – 40°C up to +80°C in service, +90°C under short-circuit conditions, +250°C
• Max. Tensile Load on Conductor: 15 N/mm²
• Max. Torsion: ±25º/m
• Travel Speed:
• In Festoon Systems: Up to 200 m/min
• In Reeling Applications: Up to 60 m/min horizontally
• In Chain Systems: Up to 200 N/mm
Quality Assurance and Testing
Test Protocols
Test Type | Parameters | Result |
Flex Life | > 5 million cycles | Passed |
Tensile Strength | > 15 N/mm² | Exceeded |
Insulation Resistance | > 100 MΩ·km | Compliant |
Voltage Test | 2.5kV for 5 minutes | Passed |
Economic Benefits
Cost-Efficiency Analysis
Benefit Category | Savings Potential | ROI Timeline |
Maintenance Reduction | Up to 40% | 6-12 months |
Downtime Prevention | Up to 50% | 3-6 months |
Installation Time | Up to 30% reduction | Immediate |
Overall Cost Benefit | 30-45% | First year |
Technical Specifications Table
Standard Sizes and Specifications
Cross Section (mm²) | Outer Diameter (mm) | Weight (kg/km) | Current Rating (A) |
1.5 | 8.0 | 95 | 19 |
2.5 | 9.2 | 140 | 26 |
4.0 | 10.5 | 190 | 34 |
6.0 | 12.0 | 250 | 44 |
Installation Guidelines
Best Practices
Pre-Installation
Verify system requirements
Check environmental conditions
Prepare installation tools
During Installation
Observe minimum bending radius
Ensure proper tensioning
Verify track alignment
Installation Parameters
Parameter | Specification | Importance |
Minimum Bend Radius | 7.5 x D | Critical |
Maximum Pull Force | 15 N/mm² | Important |
Installation Temperature | -5°C to +50°C | Recommended |
Safety and Environmental Standards
Standard | Compliance | Benefit |
RoHS | Compliant | Environmental safety |
REACH | Registered | Chemical safety |
Halogen-Free | IEC 60754-1 | Fire safety |
Low Smoke | IEC 61034-2 | Safety in fire |
The Type ÜNFLEX PUR-C-HF Crane Cable represents the pinnacle of crane cable technology, offering:
Unmatched flexibility for festoon systems
Superior durability in harsh environments
Enhanced safety features
Reduced maintenance requirements
Optimal performance in demanding applications
This high-performance cable solution ensures reliable operation in the most challenging crane applications. Contact our technical team today to discover how our crane cable solutions can enhance your operational efficiency and safety.
Standard Package Details
Cable Type | Standard Length (m) | Drum Size | Special Orders |
ÜNFLEX PUR-C-HF | 500 | K22 | Available |
Custom Lengths | On request | Various | By quotation |
Contact our sales team for detailed pricing and availability information. Our experts are ready to help you select the perfect cable configuration for your specific application.

Note: This is just part of the standard parameters of our products. Please contact our Engineer if you need more. And the information contained within this webpage is for guidance only and is subject to change without notice or liability. All dimensions and specifications are nominal and are subject to normal manufacturing tolerances. All pictures shown are for illustration purposes only. The actual product may vary. All the information is provided in good faith and is believed to be correct at the time of publication.