Heavy-Duty Rubber Reeling Cable for Power Supply with Optional Optical Data Transfer: (N)SHTOEU-J FO for High Mechanical Stress in Mobile Equipment

Introduction

In the demanding world of industrial applications, where equipment operates under extreme mechanical stress and harsh environmental conditions, the need for robust, reliable cabling solutions has never been greater. The (N)SHTOEU-J FO heavy-duty rubber reeling cable represents a pinnacle of engineering excellence, specifically designed to withstand the punishing conditions found in ports, stockyards, and mobile industrial environments.

This specialised reeling cable combines high-performance power transmission capabilities with optional optical data transfer, making it an ideal solution for modern industrial applications that require both robust power supply and high-speed data communication. The (N)SHTOEU-J FO is engineered to excel in applications where simultaneous tensile and torsional stress are inevitable, particularly in mobile equipment such as stackers and reclaimers, container-handling machinery, and various types of motorised reel systems.

The cable's design philosophy centres on durability and reliability, ensuring uninterrupted operation even in the most challenging environments. Whether deployed on motor-driven mono-spiral reels, cylindrical reels, or spring-operated systems, this cable delivers consistent performance whilst maintaining the flexibility required for continuous reeling operations. Its construction adheres to strict European standards, including RoHS 2015/863/EU compliance and DIN VDE 0250-814 specifications, ensuring both environmental responsibility and operational safety.

Product Features

Heavy-Duty Rubber Reeling Cable Construction

The (N)SHTOEU-J FO represents the evolution of heavy-duty rubber reeling cable technology, incorporating advanced materials and construction techniques to deliver superior performance. The cable's robust design begins with its conductor assembly, featuring plain copper wires that are finely stranded according to IEC 60228 class 5 specifications. This construction provides optimal flexibility whilst maintaining excellent electrical conductivity, essential for high-current applications in mobile equipment.

The power supply cable functionality is enhanced by HEPR (Hard Ethylene Propylene Rubber) compound insulation, which conforms to IEC 60502-1 standards. This insulation system provides exceptional thermal stability and electrical performance, with core colours following DIN VDE 0293-308 specifications for easy identification and installation. The ground conductor incorporates the same high-quality copper construction with distinctive green-yellow insulation for enhanced safety compliance.

Optional Optical Data Transfer Capabilities

One of the most significant features of the (N)SHTOEU-J FO is its optional optical data transfer capability, which transforms traditional power cables into comprehensive communication solutions. The cable can accommodate 12 or 2×12 optical fibres, available in various configurations including G62.5/125, G50/125, or E9/125 specifications. This flexibility allows operators to select the most appropriate fibre type for their specific data transmission requirements, whether for standard industrial communications or high-bandwidth applications.

The integration of optical fibres within the cable structure is achieved through careful engineering that maintains the cable's mechanical properties whilst providing reliable data transmission. Various fibre combinations are available upon request, allowing for customised solutions that meet specific application requirements.

High Mechanical Stress Resistance

The cable's ability to withstand high mechanical stress sets it apart from conventional industrial cables. With static tensile loads of 15 N/mm² and dynamic loads reaching 30 N/mm², the (N)SHTOEU-J FO can handle the extreme forces encountered in continuous reeling operations. The cable's torsional stress capability of ±25°/m ensures reliable performance even under the twisting forces common in mobile equipment applications.

This exceptional mechanical performance is achieved through a sophisticated construction that includes a heavy-duty rubber inner sheath using quality 5GM5 compound according to DIN VDE 0207-21. The interstices are carefully filled to provide uniform support, whilst a synthetic thread braid reinforcement creates a vulcanised bond between the inner and outer sheaths. This multi-layer approach distributes mechanical stress evenly throughout the cable structure.

UV-Resistant and Oil-Resistant Properties

Environmental resistance is crucial for outdoor industrial applications, and the (N)SHTOEU-J FO excels in this regard. The cable demonstrates unrestricted performance both indoors and outdoors, with specific resistance to ozone, UV radiation, and moisture. This UV-resistant characteristic ensures long-term reliability even under constant sun exposure, whilst the oil-resistant properties, meeting DIN EN/IEC 60811-404 standards, provide protection against hydraulic fluids and lubricants commonly found in industrial environments.

The outer sheath, constructed from heavy-duty rubber compound quality 5GM5, provides the primary barrier against environmental contaminants whilst maintaining flexibility throughout the cable's operational temperature range. Optional inkjet marking capabilities allow for easy identification and traceability.

Technical Specifications

Electrical Parameters

The (N)SHTOEU-J FO operates at a rated voltage of 0.6/1 kV (U₀/U), making it suitable for low-voltage industrial applications whilst providing adequate safety margins. The maximum permissible operating voltage in AC systems reaches 0.7/1.2 kV, whilst DC systems can operate at 0.9/1.8 kV. An AC test voltage of 3.5 kV ensures reliable insulation performance under normal operating conditions.

These electrical specifications make the cable suitable for a wide range of industrial power applications, from motor drives to control systems, whilst the integrated optical fibres provide the data transmission capabilities required for modern automated equipment.

Thermal Performance

Temperature management is critical in industrial applications, and the (N)SHTOEU-J FO demonstrates excellent thermal performance across a broad temperature range. For fixed installations, the cable operates reliably from -40°C to +80°C, whilst reeling operations are supported from -30°C to +80°C. The maximum permissible conductor temperature reaches 90°C during normal operation, with short-circuit conditions handled at temperatures up to 250°C.

These thermal parameters ensure reliable operation across diverse geographical locations and seasonal variations, from arctic conditions to tropical environments. The cable's thermal performance is further enhanced by de-rating factors calculated according to DIN VDE 0298-4, ensuring safe operation under all specified conditions.

Mechanical Parameters

The mechanical specifications of the (N)SHTOEU-J FO reflect its heavy-duty design philosophy. Bending radius requirements vary according to application: fixed installations require a minimum of 4 times the cable diameter, reeling applications need 6 times the cable diameter, and deflection pulleys require 7.5 times the cable diameter. For S-type directional changes, a minimum distance of 20 times the cable diameter ensures optimal performance and longevity.

The maximum reeling speed of 180 metres per minute accommodates high-speed industrial operations whilst maintaining cable integrity. These mechanical parameters have been carefully optimised to balance flexibility with durability, ensuring long service life even under demanding operating conditions.

Optical Fibre Options

Single-Mode E9/125 Fibres

The single-mode optical fibre option utilises E9/125 fibres conforming to ITU-T G.652 D standards, providing exceptional performance for long-distance, high-bandwidth applications. These fibres demonstrate typical attenuation values of 0.5 dB/km at 1310 nm and 0.3 dB/km at 1550 nm, making them ideal for applications requiring minimal signal loss over extended distances.

Single-mode fibres are particularly well-suited for applications where data must be transmitted over long cable runs or where high bandwidth requirements exceed the capabilities of multimode systems. The low attenuation characteristics ensure reliable data transmission even in the most demanding industrial environments.

Multimode G50/125 Fibres

The multimode G50/125 option, available in OM2-OM4 configurations according to ITU-T G.651 standards, provides versatile performance for medium-distance applications. With attenuation values of 3.0 dB/km at 850 nm and 1.0 dB/km at 1300 nm, these fibres offer excellent performance for typical industrial communication requirements.

The G50/125 configuration is particularly popular in industrial automation applications where multiple devices require reliable data connectivity over moderate distances. The larger core diameter compared to single-mode fibres provides easier installation and termination whilst maintaining good bandwidth characteristics.

Multimode G62.5/125 Fibres

The G62.5/125 multimode option provides a cost-effective solution for shorter-distance applications, with attenuation values of 3.5 dB/km at 850 nm and 1.5 dB/km at 1300 nm. These fibres follow established industry standards and offer compatibility with existing infrastructure in many industrial installations.

All fibre types follow ANSI/TIA/EIA 598-A colour coding standards, ensuring consistent identification and reducing installation errors. The careful integration of these fibres within the cable structure maintains their optical properties whilst protecting them from the mechanical stresses encountered in reeling applications.

Applications

Heavy-Duty Rubber Reeling Cable for Port Stacker Reclaimers

Port stacker reclaimers represent one of the most demanding applications for reeling cables, combining extreme mechanical stress with harsh environmental conditions. The (N)SHTOEU-J FO excels in these applications, providing reliable power transmission for the massive motors that drive these machines whilst offering high-speed data communication for automated control systems.

The cable's ability to withstand simultaneous tensile and torsional stress is particularly valuable in stacker reclaimer applications, where the cable must support its own weight whilst accommodating the complex movements required for material handling operations. The UV and moisture resistance ensure reliable operation in coastal environments where salt spray and intense sunlight can quickly degrade inferior cables.

Rubber Reeling Cable with Integrated Fibre Optics for Container Handling

Container-handling equipment, including ship-to-shore cranes and rubber-tyred gantry cranes, requires cables that can handle both high power demands and sophisticated control systems. The integrated fibre optics in the (N)SHTOEU-J FO enable real-time monitoring and control of these massive machines, supporting features such as automated container positioning, load monitoring, and predictive maintenance systems.

The cable's mechanical properties are particularly well-suited to container-handling applications, where rapid acceleration and deceleration create significant dynamic loads. The ability to operate at reeling speeds up to 180 m/min ensures compatibility with modern high-speed container-handling equipment.

High-Flex Reeling Cable for Motorised Mono-Spiral Reels

Motorised mono-spiral reels present unique challenges due to their continuous winding and unwinding action combined with the torsional forces inherent in spiral reel design. The (N)SHTOEU-J FO's high-flex characteristics and torsional stress resistance make it ideally suited for these applications, ensuring reliable operation throughout millions of reeling cycles.

The cable's construction incorporates specific design features that accommodate the unique stress patterns found in mono-spiral applications, including the synthetic thread braid reinforcement that distributes torsional loads evenly throughout the cable structure.

Torsion-Resistant Power Cable for Spring-Operated Reels

Spring-operated reels require cables that can withstand the constant tension maintained by the spring mechanism whilst accommodating the rotational forces generated during operation. The (N)SHTOEU-J FO's torsion-resistant design, rated for ±25°/m, ensures reliable performance even under the demanding conditions found in spring-loaded systems.

The cable's ability to maintain its electrical and optical properties under constant tension makes it particularly valuable in applications where consistent power delivery and data transmission are critical for safe operation.

Frequently Asked Questions

Q: What happens if the cable experiences mechanical damage during operation?

A: The (N)SHTOEU-J FO incorporates multiple protective layers designed to resist mechanical damage. The outer sheath provides primary protection, whilst the synthetic thread braid reinforcement distributes loads to prevent localised stress concentrations. However, any visible damage should be inspected immediately, and damaged sections should be replaced to maintain safety and reliability.

Q: How does temperature variation affect the cable's performance?

A: The cable is designed to operate reliably across its specified temperature range (-40°C to +80°C for fixed installations, -30°C to +80°C for reeling operations). Performance characteristics remain stable throughout this range, though extreme temperature changes may require consideration of thermal expansion in fixed installations.

Q: Can the optical fibres be field-terminated, or do they require factory preparation?

A: The optical fibres can be field-terminated using appropriate connectors and splicing equipment. However, factory preparation is recommended for critical applications to ensure optimal performance and reliability. The colour coding follows industry standards to facilitate proper termination.

Q: What maintenance is required for optimal cable performance?

A: Regular visual inspection should be conducted to check for signs of wear, damage, or contamination. The cable's outer sheath should be cleaned periodically to remove oil, dirt, or other contaminants. Mechanical connections should be inspected according to the equipment manufacturer's recommendations.

Conclusion and Call to Action

The (N)SHTOEU-J FO heavy-duty rubber reeling cable represents the pinnacle of industrial cable engineering, combining robust power transmission capabilities with advanced optical data transfer in a single, integrated solution. Its exceptional mechanical properties, environmental resistance, and flexible configuration options make it the ideal choice for demanding applications in ports, stockyards, and mobile industrial environments.

The cable's reliability and durability in harsh environments ensure minimal downtime and reduced maintenance costs, whilst its compliance with international standards provides peace of mind for safety-critical applications. Whether you're operating stacker reclaimers, container-handling equipment, or any other mobile industrial machinery, the (N)SHTOEU-J FO delivers the performance and reliability your operations demand.

For applications requiring custom fibre combinations or specific configuration requirements, our engineering team stands ready to develop tailored solutions that meet your exact specifications. Contact us today to discuss your reeling cable requirements and discover how the (N)SHTOEU-J FO can enhance the reliability and performance of your industrial operations. Our technical specialists can provide detailed application guidance and help you select the optimal configuration for your specific requirements.