PUR Polyurethane Reeling Cable

PUR reeling cables are engineered for applications that demand continuous flexing, torsional stress, and high mechanical durability. Typical installations include waste incineration plants, biomass power stations, heavy lifting yards, large-scale logistics hubs, and deep mining operations. These cables reliably power critical equipment such as refuse grab cranes, slag grab cranes, ship unloaders, port gantry cranes, stacker/reclaimers, and underground mobile mining machinery. They are also suitable for cable reeling baskets, festoon systems on overhead traveling cranes, and similar dynamic material handling systems.

Cable Construction

Conductor: Extra-fine stranded bare copper wires, conforming to VDE 0295 Class 6 / IEC 60228 Class 6 for maximum flexibility.
Insulation: Special-formulated PVC compound.
Core Identification:
- Cores ≤ 0.5mm²: Color-coded (brown, black, blue, purple, pink, orange).
- Cores ≥ 0.5mm²: Black with white numbers. 3 cores and above include a green/yellow ground conductor (optional).
Inner Jacket: Not applicable.
Shielding: Tinned copper wire braid, minimum optical coverage of 80%, offering reliable EMI protection and acting as a tensile strain relief.
Outer Sheath: Premium polyurethane (PUR). Standard colors: Black (RAL 9005), Grey (RAL 7001), Orange (RAL 2003).

Technical Specifications & Standards

Rated Voltage (U₀/U): 300/500V
Test Voltage: 2000V AC (5 minutes)
Temperature Range:
- Fixed installation: -40°C to +70°C
- Flexing/mobile operation: -5°C to +70°C
Minimum Bending Radius:
- Fixed installation: 5 x overall cable diameter
- Mobile/flexing installation: 10 x overall cable diameter

Performance Characteristics

Why choose a PUR jacket for reeling applications?
Unlike standard PVC or rubber-sheathed reeling cables, PUR (polyurethane) provides superior abrasion resistance and notch stability, which are critical when cables drag across rough surfaces or coil onto large drums. This jacket compound also delivers excellent resistance to mineral oils, hydraulic fluids, and many industrial solvents. Combined with the tinned copper braid, the cable maintains both electrical integrity and mechanical reliability under continuous dynamic loading. The high tensile strength of the PUR jacket prevents “corkscrewing” and jacket ruptures in long vertical drops or high-cycle reeling operations.

Industrial Applications

Engineered specifically for high-duty-cycle vertical and horizontal reeling:

Waste-to-Energy Plants: Refuse crane and slag handling grab buckets.
Port & Marine: Ship-to-shore grab unloaders, container gantry cranes, and port mobile equipment with cable reeling baskets.
Mining & Tunneling: Underground loaders, shuttle cars, and continuous miners requiring trailing/reeling cables with exceptional tear strength.
Material Handling: Stacker/reclaimers, belt conveyor trippers, and heavy-duty festoon systems on overhead bridge cranes.

Inquiry & Customization

We manufacture this reeling cable to match your specific drum dimensions, travel lengths, and mechanical loads. Standard supply includes color-coded or numbered cores with PUR jacket options in black, grey, or orange. For projects requiring increased voltage ratings, integrated fiber optic elements, or particular international approvals, contact our engineering team.

To discuss core configurations, sheath colors, or request a test sample for your equipment, reach out to our technical sales engineers below.

4. FAQ

What is the advantage of a PUR jacket compared to a rubber jacket on a reeling cable?
PUR jackets provide significantly better resistance to abrasion, tearing, and notch propagation than standard Neoprene or EPDM rubber jackets. This is especially critical in reeling applications where the cable experiences sidewall pressure and surface drag. PUR also resists oils, fuels, and ozone more effectively, which extends service life in harsh industrial environments like ports and waste treatment plants.

What does VDE 0295 Class 6 conductor mean?
This classification refers to the maximum flexibility of the copper conductor. Class 6 conductors are made from extra-fine individual strands, making them the most flexible option available for cables that must withstand constant bending, winding, and unwinding on cable reels. This design minimizes internal strand breakage.

Can this cable be used in outdoor or sub-zero temperature applications?
Yes. The polyurethane jacket compound remains flexible in low-temperature conditions. For fixed installations, the cable can withstand temperatures down to -40°C. For dynamic/mobile reeling operations, the minimum ambient temperature is -5°C without pre-heating. Below that, we recommend contacting our engineers to discuss specialized low-temperature PUR compounds.

Do you supply the cable with a green/yellow ground core?
Yes. For power versions with 3 cores and above, we include a green/yellow ground core as standard. If your equipment does not require a separate ground or uses a specific earthing layout, we can supply configurations without the G/Y core upon request.

I need a specific breaking load or a different voltage rating. Do you offer custom designs?
Absolutely. We specialize in custom-engineered reeling cables. We can incorporate integrated tensile strength members (aramid fiber strands), adjust the voltage level to 0.6/1kV or higher, and supply with molded cable assemblies if required. Please send us your technical requirements, including drum length, voltage, and environmental exposure, for a tailored recommendation.