Overhead Crane Cables

Overhead Crane Cables – Reliable, Durable & Cost‑Effective

Vital for Safe Power Transmission

Overhead crane cables are vital for powering, controlling, and signaling crane systems, ensuring efficient and safe operations.

They are broadly divided into four types: Festoon Cables for flexible motion, Chain Cables for heavy‑duty lifting, Drum Reeling Cables for reeling applications, and Pendant Cables for precise control. Each type is designed to meet specific operational needs, providing reliability and durability in demanding industrial environments.

Festoon Cables – Round & Flat Types

Designed for Harsh Environments

Festoon cables are available in round and flat configurations. They are made with imported specialty materials and unique manufacturing processes.

Key features: flexibility, wear resistance, oil resistance, weather resistance, acid‑alkali resistance, tensile strength, UV protection, and optional flame retardancy.

Product Structure

Conductor: Multi‑strand, tinned oxygen‑free copper wire, compliant with VDE0295 CLASS 6 standards

Insulation: High‑strength composite materials

Sheath: Premium PUR (Polyurethane)

Technical Parameters

Voltage: 0.6/1KV

Test Voltage: 3.5KV/5min (AC)

Bending Radius – Fixed Installation: 5 × cable outer diameter

Bending Radius – Flexible Installation: 6–10 × cable outer diameter

Operating Temperature: -15°C to +70°C

Application Scenarios

Festoon Round Cables – Used in industrial automation power supply systems for production lines

Flat Festoon Cables – Suitable for festoon systems in lifting and long‑stroke material handling equipment, such as overhead cranes, coal yard tippers, and metallurgical hoists. The cables are suspended and move back and forth, bending as they follow the festoon system.

Chain Cables

Product Overview

Chain cables are designed for use inside drag chain boxes, hence the name. These high‑flexibility cables move, bend, and are continuously dragged and rubbed by the drag chain during operation. The drag chain resembles a tank’s track, which is why chain cables are sometimes referred to as “tank chain cables.” These cables are protected by the drag chain, preventing tangling, wear, pull‑out, and scattering, thereby extending their service life.

Features

Flexibility: Chain cables need good bending resistance to withstand frequent bending motions, which can cause breakage without it.

Drag Resistance: These cables are dragged by the chain box during operation, requiring materials that can resist being easily pulled apart. The conductor and sheath materials are selected for their drag resistance.

Wear Resistance: Chain cables constantly rub against the drag chain, making wear resistance critical. Standard flexible cables cannot be used for this purpose due to insufficient wear resistance, as their sheaths would wear out too quickly.

Other Features: Chain cables are used in various types of equipment and operating environments. Different environments require different performance characteristics. For example, cables used in northern winters must have low‑temperature resistance, those used in steel mills need high‑temperature resistance, and others may need oil resistance, waterproofing, acid‑alkali resistance, and corrosion resistance.

Application Scenarios

Chain cables used in the power supply systems of gantry crane trolleys

Drum Reeling Cables – Flat & Round Types

Drum Flat Cables

Features

These cables are characterized by high wear resistance, high strength, excellent flexibility, tear resistance, waterproof properties, bending resistance, fold resistance, oil resistance, cold resistance (-40°C to +80°C), UV protection, and flame retardancy. Their service life in high‑frequency use is at least three times longer than standard rubber flat cables.

Product Structure

Conductor: Multi‑strand ultra‑fine tinned oxygen‑free copper wire, compliant with VDE0295 CLASS 6 standards

Insulation: Special mixed PVC insulation material

Core Wire Color: Numbered or color‑coded (customizable per customer requirements)

Inner Sheath: Special high‑strength composite material

Outer Sheath: Polyurethane (PUR)

Outer Sheath Colors: Grey, black, orange (custom colors available upon request)

Technical Parameters

Rated Voltage: ≥0.5mm² – 300/500V; <0.5mm² – 300/300V

Test Voltage: 2500V

Temperature Range (Fixed & Flexible): -40°C to +105°C

Minimum Bending Radius – Fixed Installation: 5 × cable outer diameter

Minimum Bending Radius – Flexible Installation: 7.5 × cable outer diameter

Application Scenarios

Flat drum cables used in the power supply systems of large gantry cranes with a hysteresis‑type cable reel mechanism

Drum Round Cables

Features

Drum round cables feature reinforced cores and are suitable for use in mobile equipment subject to high mechanical stresses, such as fast‑moving container cranes, hoisting equipment, large mobile equipment, excavators, and both surface and underground mining operations. These cables offer long service lives and stable quality, with a polyurethane sheath that enhances wear resistance and durability in harsh environments.

Product Structure

Conductor: Ultra‑fine stranded copper wire (tinned optional), compliant with IEC60228 CLASS 6

Insulation: High‑quality modified PVC

Grounding Wire: Optional, depending on cable structure (3+3 configuration)

Inner Sheath: Mixed modified PVC

Outer Sheath: Polyurethane (PUR)

Technical Parameters

Voltage: 0.6/1KV

Test Voltage: 3500V/5min (AC)

Bending Radius – Fixed Installation: 5 × cable outer diameter

Bending Radius – Flexible Installation: 10 × cable outer diameter

Temperature Range – Fixed Installation: -40°C to +90°C

Temperature Range – Flexible Installation: -35°C to +90°C

Flame Retardancy: Compliant with IEC60332‑1

Chemical Resistance: Excellent resistance to acids, alkalis, solvents, and various hydraulic oils

Weather Resistance: UV resistant – excellent performance under sunlight, suitable for outdoor use

Pendant Cables

Applications

Double steel wire crane control cables are widely used in the lifting, transportation, machinery, electrical, mining, metallurgical, port, and dock industries for crane control purposes.

These control cables are typically used for working voltages below 450/750V and in environments with temperatures ranging from -55°C to +70°C.

Product Structure

Conductor: Annealed, tensile‑resistant oxygen‑free copper

Reinforcement: High‑strength galvanized steel wires (two strands)

Insulation Sheath: Wear‑resistant nitrile rubber mixed material – specially designed for flat cables

Colors: Black, yellow (custom colors available upon request)

Filling: Jute rope

Wrapping: Non‑woven fabric

How to Maintain and Care for Crane Cables

Regularly Inspect the Connection Points

The connection points of crane cables are vulnerable to mechanical damage and corrosion. Regularly check these connections for any looseness or damage. If any issues are found, take immediate repair actions.

Keep the Cables Clean and Dry

Cranes often operate in environments exposed to dust, moisture, and other factors that can affect the cables. To maintain optimal insulation performance, regularly clean the cable surfaces and ensure proper moisture protection.

Be Mindful of Load‑Bearing and Transportation

During lifting and transportation, pay attention to the cable's load‑bearing capacity. Avoid overstretching the cables or exposing them to severe impacts, as this can damage the conductors and insulation materials.

How to Choose the Right Crane Cable Based on Operating Environment

The operating environment of the crane is a critical factor in selecting the appropriate cable. Different environments impose varying requirements on cables, so it is essential to choose a cable suited to the specific conditions.

Key environmental considerations include:

Temperature range (high heat, cold, or extreme fluctuations)

Exposure to moisture, water, or humidity

Presence of dust, dirt, or abrasive particles

Chemical exposure (oils, acids, alkalis, solvents)

UV radiation / outdoor sunlight exposure

Mechanical stress (flexing, dragging, pulling, or impact)

Selecting the correct cable for your environment ensures safe operation, longer service life, and reduced maintenance costs.

Need Help Selecting the Right Cable?

For questions related to selecting or purchasing crane cables, please contact us. Our professional team is dedicated to providing you with the best service!