Yffb Yffbg Yvfb Flat Rubber High Flexible Crane Conveyor Elevator Cable 3X4 3X2.5 3X1.5 3X6 4X6 Traveling Cable-Power Cables

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2025-09-15 08:11:49

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Yffb, Yffbg, Yvfb Flat Rubber High Flexible Crane Conveyor Elevator Cables: Comprehensive Details

I. Product-Specific Details

1. Technical Specifications and Electrical Performance

Yffb, Yffbg, and Yvfb flat rubber high Flexible Cables are engineered with precise technical specifications to meet the rigorous demands of dynamic industrial applications. These cables are available in various core configurations and conductor sizes, including 3X1.5, 3X2.5, 3X4, 3X6, and 4X6 mm², each tailored to specific power transmission requirements.

The voltage rating for these cables typically ranges from 0.6/1kV, making them suitable for low-voltage power distribution in cranes, conveyors, elevators, and other traveling machinery. This voltage range ensures compatibility with standard industrial electrical systems, providing a reliable power supply for motors, control systems, and auxiliary equipment.

Current-carrying capacity varies depending on the conductor size and operating conditions. For example, a 3X2.5 mm² cable can carry a continuous current of approximately 25A at 30°C ambient temperature, while a 3X6 mm² cable can handle up to 45A under the same conditions. These values are derated at higher temperatures: at 40°C, the current-carrying capacity of a 3X2.5 mm² cable drops to around 22A, and at 50°C, it further reduces to 19A. This derating ensures safe operation by preventing excessive heating, which could degrade the insulation and shorten the cable's service life.

The conductors are made of high-purity copper (purity ≥99.95%), ensuring excellent electrical conductivity (≥100% IACS). The stranded construction of the conductors, with multiple thin strands twisted together, not only enhances Flexibility but also reduces skin effect losses at higher frequencies, ensuring efficient power transmission. The DC resistance of a 1.5 mm² Copper Conductor is approximately 12.1Ω/km at 20°C, while a 6 mm² conductor has a resistance of about 3.08Ω/km, minimizing power loss during transmission.

Insulation resistance is a critical parameter for these cables, with a minimum value of 1000MΩ·km at 20°C. This high insulation resistance prevents leakage currents and ensures reliable electrical isolation between conductors, even in harsh environments. The dielectric strength of the rubber insulation is ≥15kV/mm, providing protection against voltage surges and ensuring safe operation in electrical systems where transient voltages may occur.

The capacitance between conductors is relatively low, typically ranging from 0.3µF/km to 0.6µF/km at 50Hz, depending on the conductor size and insulation thickness. This low capacitance minimizes reactive power losses and signal interference, making the cables suitable for use in systems where power and control signals are transmitted simultaneously.

2. Conductor and Insulation Materials

The conductors of Yffb, Yffbg, and Yvfb cables are made of high-quality stranded copper, which offers a combination of excellent conductivity, flexibility, and durability. The Copper Strands are typically tinned to enhance corrosion resistance, preventing oxidation and ensuring long-term electrical performance. The number of strands varies with conductor size: a 1.5 mm² conductor may consist of 19 strands of 0.3mm diameter wire, while a 6 mm² conductor can have 37 strands of 0.4mm diameter wire. This stranding pattern ensures maximum flexibility, allowing the cable to bend and twist repeatedly without conductor breakage.

Insulation materials play a crucial role in the performance of these cables, providing electrical isolation and protection against environmental factors. Yffb and Yvfb cables use either ethylene propylene rubber (EPR) or chloroprene rubber (CR) for insulation, each offering distinct advantages:

Ethylene Propylene Rubber (EPR): EPR insulation provides excellent resistance to heat, ozone, and weathering, making it suitable for both indoor and outdoor applications. It has a wide operating temperature range of -40°C to 105°C, allowing it to withstand extreme temperature fluctuations. EPR is also resistant to oils, fats, and many chemicals, making it ideal for use in industrial environments where exposure to such substances is common.

Chloroprene Rubber (CR): CR insulation offers good flexibility at low temperatures and excellent resistance to flame, oil, and abrasion. It has an operating temperature range of -30°C to 80°C, making it suitable for applications where moderate heat resistance is required. CR also provides good adhesion to other materials, ensuring a tight bond between the insulation and the conductor, which enhances the cable's mechanical strength.

Yffbg cables feature an additional galvanized steel wire braid layer, which provides enhanced mechanical protection. The steel braid is woven around the Insulated Conductors, offering resistance to abrasion, impact, and cutting, which is particularly important for cables used in cranes and other machinery where contact with sharp edges or moving parts is likely. The galvanized coating on the steel wires provides corrosion resistance, ensuring the braid remains effective even in humid or corrosive environments.

The outer sheath of all three cable types is made of a tough rubber compound, typically neoprene or a blend of EPR and CR. This sheath provides additional protection against mechanical damage, UV radiation, and moisture, ensuring the cable's longevity in harsh operating conditions. The sheath is designed to be flexible, allowing the cable to bend without cracking, and it has good adhesion to the underlying insulation or braid layer, preventing delamination.

3. Structural Design and Dimensions

The flat design of Yffb, Yffbg, and Yvfb cables is a key structural feature that sets them apart from round cables. This design is optimized for dynamic applications, allowing for a smaller bending radius and reducing the risk of entanglement. The flat profile also makes installation easier in confined spaces, such as elevator shafts and crane booms, where space is limited.

The construction of these cables begins with the Stranded Copper Conductors, which are individually insulated with EPR or CR rubber. The insulated conductors are then arranged in a flat, parallel configuration, with a small gap between them to allow for flexibility. In Yffbg cables, the insulated conductors are surrounded by a galvanized steel wire braid, which is applied in a tight weave to provide mechanical protection without compromising flexibility.

The outer sheath is extruded over the insulated conductors (or over the steel braid in Yffbg cables), forming a continuous, flat layer that encapsulates the entire cable. The sheath is designed to have a uniform thickness, typically ranging from 1.0mm to 1.5mm, depending on the cable size, ensuring consistent protection across the cable's width.

The dimensions of the cables vary with conductor size and configuration. For example, a 3X2.5 mm² Yffb cable has a width of approximately 18mm and a thickness of 6mm, while a 4X6 mm² Yvfb cable may have a width of 30mm and a thickness of 8mm. These compact dimensions make the cables easy to handle and install, even in tight spaces.

The minimum bending radius of these cables is a critical parameter for dynamic applications, with values as low as 5 times the cable's thickness for static bending and 10 times the thickness for dynamic bending. This allows the cables to be routed around tight corners and subjected to repeated flexing without damage. For example, a cable with a thickness of 6mm has a minimum static bending radius of 30mm and a dynamic bending radius of 60mm, enabling it to withstand the frequent movement encountered in elevator and crane applications.

4. Special Features and Applications

Yffb, Yffbg, and Yvfb cables offer several special features that make them ideal for dynamic industrial applications:

High Flexibility: The combination of stranded Copper Conductors, rubber insulation, and flat design gives these cables exceptional flexibility, allowing them to bend and twist repeatedly without cracking or conductor breakage. This is crucial for applications such as elevators and cranes, where cables are subjected to millions of flex cycles during their service life.

Mechanical Durability: The Rubber Sheath and, in Yffbg cables, the steel wire braid provide excellent resistance to abrasion, impact, and cutting. This makes the cables suitable for use in harsh environments where they may come into contact with metal surfaces, concrete, or other abrasive materials.

Temperature Resistance: The insulation and sheath materials can withstand a wide range of temperatures, from -40°C to 105°C, making the cables suitable for use in both cold storage facilities and high-temperature industrial environments.

Chemical Resistance: The rubber materials used in these cables are resistant to oils, fats, acids, and alkalis, ensuring reliable performance in industrial settings where exposure to such substances is common.

Weather Resistance: The outer sheath is UV-resistant and waterproof, allowing the cables to be used outdoors without degradation, making them suitable for gantry cranes, outdoor conveyors, and other equipment exposed to the elements.

These features make Yffb, Yffbg, and Yvfb cables suitable for a wide range of applications:

Cranes and Hoists: Yffbg cables, with their steel wire braid, are particularly well-suited for overhead cranes, gantry cranes, and hoists. The braid protects against abrasion from contact with crane structures, while the high flexibility allows the cable to follow the crane's movement as it rotates and lifts loads. These cables power the crane's motors, control systems, and auxiliary equipment, ensuring reliable operation even in heavy-duty applications.

Conveyors: Yffb and Yvfb cables are commonly used in belt conveyors, chain conveyors, and other material handling systems in factories, mines, and warehouses. Their oil resistance protects against lubricants used in conveyor systems, and their flat design allows them to be installed alongside moving parts without snagging. These cables provide power to the conveyor motors and may also carry control signals for speed regulation and emergency stops.

Elevators and Escalators: Yvfb cables are often used in elevators and escalators, where their high flexibility and voltage stability are essential. The flat design reduces wind resistance in elevator shafts, minimizing vibration and noise, while the rubber insulation ensures reliable performance in the enclosed environment of the shaft. These cables power the elevator motor, control the door operations, and transmit signals between the elevator car and the control system.

Automated Guided Vehicles (AGVs): All three cable types are suitable for AGVs, which are used in factories and warehouses for automated material transport. The cables must follow the AGV's movement as it navigates around the facility, requiring high flexibility and durability. The chemical resistance of the rubber materials also makes them suitable for use in cleanroom environments, such as in the semiconductor and pharmaceutical industries.

Other Traveling Machinery: Yffb, Yffbg, and Yvfb cables are also used in a variety of other traveling machinery, including mobile cranes, forklifts, and industrial robots. Their ability to withstand repeated movement and harsh environments ensures reliable power transmission, minimizing downtime and maintenance costs.

5. Manufacturing Process and Quality Control

The manufacturing process of Yffb, Yffbg, and Yvfb cables involves several stages, each with strict quality control measures to ensure consistent performance and reliability.

Conductor Stranding: The process begins with high-purity copper rods, which are drawn through a series of dies to form thin Copper Wires. These wires are then twisted together in a stranding machine to form the Stranded Conductors. The stranding process is carefully controlled to ensure uniform tension and lay length, which are critical for maintaining the conductor's flexibility and electrical properties. The number of strands and their diameter are determined by the conductor size, with larger conductors requiring more strands to maintain flexibility.

Insulation Extrusion: Each stranded conductor is then insulated with EPR or CR rubber using an extrusion process. The rubber material is fed into an extruder, where it is melted and applied to the conductor in a continuous layer. The extrusion process is controlled to ensure a uniform insulation thickness, with inline monitoring systems checking for defects such as voids, bubbles, or uneven thickness. The insulated conductors are then cooled to solidify the rubber insulation.

Cable Formation: For Yffb and Yvfb cables, the insulated conductors are arranged in a flat, parallel configuration and wrapped with a binder tape to hold them together. For Yffbg cables, the insulated conductors are first covered with a galvanized steel wire braid, which is applied using a braiding machine. The braid is woven tightly around the conductors to provide mechanical protection while maintaining flexibility.

Sheath Extrusion: The final stage is the extrusion of the outer rubber sheath. The cable core (either the bound insulated conductors or the braided core) is passed through another extruder, where the sheath material is applied in a continuous, flat layer. The extrusion process is controlled to ensure a uniform sheath thickness and good adhesion to the underlying layers. The Sheathed Cable is then cooled and cut to the required length.

Throughout the manufacturing process, rigorous quality control tests are performed to ensure the cables meet specifications:

Conductor Tests: Each batch of conductors is tested for conductivity, tensile strength, and elongation to ensure they meet the required standards.

Insulation Tests: The insulation is tested for thickness, dielectric strength, and insulation resistance. Samples are also subjected to thermal aging tests to verify performance at high temperatures.

Braid Tests: For Yffbg cables, the steel wire braid is tested for coverage, tensile strength, and corrosion resistance.

Sheath Tests: The outer sheath is tested for thickness, tensile strength, elongation, and resistance to abrasion, oil, and UV radiation.

Flexibility Tests: Samples of the finished cable are subjected to repeated bending cycles (up to 10 million cycles) to ensure they can withstand the dynamic stresses of their intended applications.

Electrical Tests: The finished cables are tested for conductor resistance, insulation resistance, and dielectric strength to ensure they meet electrical performance requirements.

These quality control measures ensure that each Yffb, Yffbg, and Yvfb cable meets the highest standards of performance and reliability, providing customers with a product they can trust for their critical industrial applications.

II. General Product Information

1. Packaging Specifications

Yffb, Yffbg, and Yvfb cables are packaged to ensure they arrive at the customer's location in perfect condition, protected from damage during transportation and storage.

For standard lengths (typically 50m, 100m, or 200m), the cables are wound onto wooden or plastic reels. The reels are designed with flanges to prevent the cable from slipping off during transportation, with flange diameters ranging from 300mm for small reels to 800mm for larger ones. The cable is wound tightly onto the reels, with a layer of moisture-resistant plastic film wrapped around it to protect against dust and moisture.

For shorter lengths or custom cuts, the cables may be coiled and secured with plastic ties, then placed in heavy-duty cardboard boxes. These boxes are lined with foam or other cushioning materials to prevent damage during transit. Each box or reel is clearly labeled with the following information:

Product name and type (Yffb, Yffbg, or Yvfb)

Conductor configuration and size (e.g., 3X2.5 mm²)

Length of the cable

Net weight and gross weight

Manufacturer's name and logo

Batch number and production date

Handling instructions ("This Side Up," "Do Not Drop")

Compliance marks and certifications (e.g., CE, IEC)

For international shipments, the reels or boxes are often placed in wooden crates to provide additional protection during sea or air transport. These crates are designed to meet international shipping standards, including ISPM 15 for wooden packaging, which requires treatment to prevent the spread of pests.

2. Transportation and Logistics

Yffb, Yffbg, and Yvfb cables are classified as non-hazardous goods for transportation, which simplifies logistics and reduces shipping costs. They can be transported via road, rail, sea, or air, depending on the destination, quantity, and urgency of the order.

Road Transport: For domestic shipments, road transport is the most common and cost-effective option. The cable reels or boxes are loaded onto trucks using forklifts or cranes, with securing straps used to prevent movement during transit. Delivery times typically range from 1 to 5 business days, depending on the distance from the manufacturing facility.

Rail Transport: For larger quantities or longer domestic distances, rail transport may be used. This is particularly suitable for shipments to remote areas or when road transport is impractical. Rail transport offers reliable delivery times, typically 3 to 7 business days, and can handle larger loads than road transport.

Sea Transport: For international shipments, sea transport is the most economical option, especially for large quantities. The cable reels or crates are loaded into shipping containers, with proper securing to prevent movement during the voyage. Transit times vary depending on the destination, ranging from 2 to 6 weeks for most major ports.

Air Transport: For urgent orders, air transport is available, though it is more expensive than sea or road transport. Air freight is suitable for small quantities or when time is critical, with delivery times ranging from 3 to 7 business days. The cables must be packaged to meet airline regulations for size and weight.

During transportation, it is important to protect the cables from extreme temperatures, moisture, and physical damage. The packaging is designed to withstand these conditions, but additional precautions may be taken for sensitive shipments, such as using climate-controlled containers for long sea voyages or covering reels with tarpaulins during road transport in inclement weather.

3. Order Processing and Delivery

The order processing for Yffb, Yffbg, and Yvfb cables is designed to be efficient and customer-friendly, with a dedicated sales team available to assist with inquiries and order placement.

Order Placement: Customers can place orders via phone, email, or through the manufacturer's website. The sales team will provide a quote based on the cable type, size, length, and quantity, along with delivery options and lead times.

Order Confirmation: Once an order is placed, the customer receives a confirmation email with details of the order, including the product specifications, quantity, price, delivery date, and payment terms.
Production and Quality Control: The cables are manufactured according to the order specifications, with rigorous quality control checks at each stage of production. Once production is complete, the cables undergo final testing to ensure they meet all performance requirements.
Packaging and Shipping: The cables are packaged as per the customer’s requirements and shipped via the chosen transport method. The customer is provided with a tracking number to monitor the shipment’s progress.

Delivery: Delivery times vary depending on the transport method and destination, as outlined in the transportation section. The sales team keeps the customer informed of any delays or issues that may arise during shipping.

4. Sample Policy

To help customers evaluate the performance and suitability of Yffb, Yffbg, and Yvfb cables for their specific applications, the manufacturer offers a sample policy.

Sample Availability: Samples of Standard Cable types and sizes (e.g., 3X2.5 mm² Yffb, 3X4 mm² Yffbg) are available upon request. Custom samples may be provided for specific configurations, subject to feasibility and additional costs.

Sample Size: Samples are typically 1-2 meters in length, allowing customers to test flexibility, inspect the construction, and evaluate the materials.

Cost and Shipping: Standard samples are provided free of charge, with the customer responsible for shipping costs. For custom samples, the manufacturer may charge a nominal fee to cover production costs, which is refundable if a subsequent order is placed.

Ordering Samples: Customers can request samples via phone, email, or the manufacturer’s website. The sales team processes sample requests within 1-2 business days, with delivery typically within 3-7 business days for domestic shipments and 7-14 business days for international shipments.

5. Warranty and After-Sales Support

The manufacturer stands behind the quality of Yffb, Yffbg, and Yvfb cables, offering a comprehensive warranty and after-sales support to ensure customer satisfaction.

Warranty Period: The cables come with a standard warranty of 12 months from the date of delivery, covering defects in materials and workmanship. For certain applications or with additional documentation of proper installation and maintenance, the warranty may be extended to 24 months.

Warranty Coverage: The warranty covers failures due to manufacturing defects, such as insulation breakdown, conductor damage, or braid failure, under normal operating conditions. It does not cover damage caused by improper installation, misuse, abuse, or environmental conditions beyond the cable’s rated specifications.

Claims Process: To file a warranty claim, customers must provide proof of purchase, a description of the issue, and photographs or videos of the defect. The manufacturer’s technical team evaluates the claim and, if approved, arranges for replacement or repair of the defective cable.

Technical Support: The manufacturer provides ongoing technical support to assist customers with installation, troubleshooting, and maintenance. A team of experienced engineers is available via phone or email to answer questions, provide installation guidelines, and offer solutions to any issues that may arise.

Installation Assistance: For large or complex installations, the manufacturer may provide on-site technical support to ensure proper cable installation, minimizing the risk of damage and ensuring optimal performance.

Maintenance Guidelines: The manufacturer provides detailed maintenance guidelines, including recommendations for inspection intervals, cleaning procedures, and signs of wear to monitor. Following these guidelines helps extend the cable’s service life and ensures reliable operation.

6. Storage and Handling Guidelines

Proper storage and handling are essential to maintain the performance and longevity of Yffb, Yffbg, and Yvfb cables.

Storage Conditions: Cables should be stored in a dry, cool, and well-ventilated area, away from direct sunlight, heat sources, and corrosive substances. The recommended storage temperature range is -10°C to 40°C, with relative humidity below 75%.

Handling: When handling the cables, care should be taken to avoid excessive bending, twisting, or pulling, which can damage the conductors, insulation, or braid. Cables should be lifted by the reel or coil, not by the cable itself, to prevent strain.

Unrolling and Installation: When unrolling the cable from reels, ensure the reel rotates freely to avoid kinking or twisting. During installation, the cable should be routed to avoid sharp bends beyond the minimum bending radius, and contact with abrasive surfaces or chemicals should be minimized.

Protection During Installation: During installation, the cable should be protected from cuts, abrasions, and impact using appropriate sleeves or conduits where necessary. Connections should be made using compatible terminals and connectors, following the manufacturer’s guidelines to ensure a secure and reliable electrical connection.

Inspection Before Use: Before installation, the cable should be inspected for any signs of damage, such as cuts, cracks, or bulges in the insulation or sheath, or damage to the braid. If any damage is found, the cable should not be installed and should be returned to the manufacturer for evaluation.

By following these storage and handling guidelines, customers can ensure that Yffb, Yffbg, and Yvfb cables remain in optimal condition, providing reliable performance throughout their service life.

Conclusion

Yffb, Yffbg, and Yvfb flat rubber High Flexible Cables are engineered to meet the unique demands of dynamic industrial applications, including cranes, conveyors, elevators, and traveling machinery. Their combination of high flexibility, durable materials, and specialized design ensures reliable power transmission in harsh and demanding environments.

From their technical specifications and materials to their manufacturing process, packaging, and after-sales support, every aspect of these cables is designed to provide customers with a high-quality, reliable product. Whether used in a busy factory, a high-rise elevator, or an outdoor crane, Yffb, Yffbg, and Yvfb cables deliver consistent performance, minimizing downtime and maintenance costs.

With a commitment to quality, innovation, and customer satisfaction, the manufacturer continues to refine and improve these cables, ensuring they meet the evolving needs of industrial applications. For customers seeking a flexible, durable, and reliable Power Cable for dynamic machinery, Yffb, Yffbg, and Yvfb cables offer an excellent solution.