PUR Drum Reeling Cable - Power & Control Hybrid for Gantry Crane, Hoist, Trolley System -High Flexible, Braided Shield
Specification
| Basic Structure | Conductor+Insulation+Jacket+Hose |
| Conductor | Plain Copper/ Tinned Copper |
| Insulation | PE |
| Braid | Kevlar/ Plain Copper/ Tinned Copper |
| Jacket | PUR/TPE/PCP |
INTRODUCTION
A container gantry crane at a busy port cycles its cable drum 500 times a day — winding and unwinding 50 meters of cable at 100 m/min under full tension, salt spray, and tropical sun. A ship unloader's grab bucket slams into the hold, yanking the cable against the drum flange. A steel mill's overhead crane reels through 60°C ambient heat and airborne scale dust.
When a drum reeling cable fails, the crane stops. The ship stays docked. The mill goes silent. The cost is measured in thousands of dollars per hour.
Derul Cable's DERUL-DR Drum Reeling Cable Series is designed to make sure that moment never comes. Every cable combines ultra-flexible conductors, integrated steel/Kevlar tensile reinforcement, abrasion-proof PUR jacketing, and application-specific shielding into a single reeling solution that outperforms standard rubber and PVC cables by a factor of three.
ADVANTAGES
Drum reeling cables face relentless mechanical stress: continuous winding/unwinding at high speed, multi-layer spooling pressure, and tight bend radii at the drum flange. Derul's DERUL-DR series is engineered from the ground up for this environment — Class 5/6 ultra-fine tinned copper stranding, low-friction PUR jacket, and optimized lay length deliver reliable operation at 6× outer diameter bend radius and up to 120 m/min reeling speed. No corkscrewing, no jacket cracking, no conductor fatigue — even after years of 24/7 port operation.
When a gantry crane cable snags or the drum brake engages hard, the cable takes the full shock load. A cable without tensile reinforcement stretches, necks down, and fails. Derul's DERUL-DR integrates a central steel wire rope core plus Kevlar/aramid yarn layers to deliver ≥3,000 kg breaking load without elongation. The tensile elements are embedded between inner and outer sheaths — fully protected from corrosion, not exposed to the environment.
Why run three separate cables from the drum to the trolley when one cable does it all? The DERUL-DR hybrid design integrates:
Power conductors (3–5 cores, up to 185 mm²) — main hoist, cross-travel, and long-travel motors
Shielded control pairs (2–24 cores) — limit switches, encoders, load cells, emergency stop
Fiber optic elements (optional) — CCTV, data networking, condition monitoring
One cable. One drum. Zero tangling. Reduced reel weight and faster installation.
Gantry cranes work in salt spray, rain, UV, and hydraulic oil. Grab cranes work in coal dust, ore slurry, and impact. Standard PVC or rubber jackets degrade within months. Derul's PUR (polyurethane) outer jacket is tested for:
Saltwater & UV — no cracking after 3,000+ hours xenon-arc weathering (ISO 4892-2)
Oil & fuel — IRM 902 / ASTM No.2 / No.3 oil immersion without swelling or hardening
Abrasion — DIN 53516 abrasion loss <30 mm³, survives dragging across steel deck plates
Cold flexibility — stays flexible down to -40°C for arctic port and mining applications
Multi-layer drum spooling creates torsional stress that causes ordinary cables to corkscrew — twisting into figure-8 loops that jam the reel and damage conductors. The DERUL-DR is built with a counter-helical conductor lay and anti-torsion braided shield design that resists ±150°/m of twist. The cable pays out and rewinds straight — every time, for the life of the reel.
Standard catalog cables don't fit your reel dimensions, your power requirements, or your connector pinout. Derul Cable configures to your specification:
Core layout: Custom power × control × fiber count and cross-section
Reel compatibility: Cable OD matched to your drum width and flange diameter
Termination: bare ends, tinned, ferrules, or pre-terminated connectors
Voltage class: 600/1000V standard; up to 8.7/15 kV medium voltage on request
Jacket marking: meter marking every 1 m for precise cut-to-length
Sampling: 5–7 working days; mass production: 15–25 working days
FAQ
Q: Is Derul Cable the original manufacturer?
A: Derul Cable is a special cable manufacturer. Our factory is based in Shanghai.
Q: Is the price negotiable?
A: Yes, the price is negotiable. Our price is also flexible due to several factors including purchase quantity.
Q: What is the regular MOQ for your cable?
A: Any quantity is okay to purchase for product at stock. For product with no stock, its MOQ is usually 100-200 meters per type.
Q: How can I get sample?
A: Usually you only need to pay the express freight, and after your confirmation of the product dimension and structure, we can arrange the sample and send it directly to you.
Q: Is OEM or ODM service available?
A: OEM and ODM services are both available. You can provide us with your requirement for the product and we will evaluate it to push forward.
Q: What is the regular production time?
A: For regular quantity, it usually costs about 15-25 days to produce.
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WhatsApp: +86 13641831061
E-mail: sales@derulkable.com
Add.:No.236 Fenggao Road Fengxian District Shanghai China
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