In high-volume cable manufacturing, especially for overhead conductors and armored power cables, achieving excellent compaction, consistent lay length, and high productivity is essential. Traditional planetary or cage stranders often face limitations in speed, floor space, and continuous operation.
The RLB Central Stranding Machine (also known as Concentric Strander) solves these challenges with its advanced concentric design. By aligning the central payoff and rotating cage on the same axis, combined with internal bobbins and a dual bobbin & flying wing system, this machine delivers significantly higher rotational speeds, better conductor compaction, reduced labor, and true continuous production capability.
This makes it particularly suitable for manufacturers in Saudi Arabia and the GCC producing AAC, AAAC, ACSR conductors, copper flexible conductors, and armored cables to support the region’s growing power infrastructure and Vision 2030 projects.
Advanced Design & Operational Benefits
Concentric High-Speed Architecture The central payoff and cage rotation share the same axis, enabling ultra-high rotational speeds of up to 550 rpm. This results in faster stranding, superior compaction, and excellent conductor quality with consistent lay length.
Internal Bobbin Layout Bobbins are positioned inside the cage, eliminating the need to stop production for loading or unloading. This dramatically reduces labor, minimizes downtime, and saves valuable factory floor space.
Dual Bobbin & Dual Flying Wing System Each wire position uses two bobbins and two flying wings. This innovative design allows simultaneous stranding and rewinding, or alternate operation, enabling truly continuous high-output production runs without interruption.
Excellent Compaction for Round & Sector Conductors The precision die holder supports high-quality compaction of both round and sector-shaped conductors, meeting the strict requirements of overhead line and power cable applications.
Versatile Material Compatibility Suitable for copper wires (1.5–5.0 mm), aluminum wires (1.8–5.0 mm), and aluminum alloy wires (1.5–5.0 mm), with bobbin loading capacity up to 1200 kg. This versatility makes it ideal for a wide range of conductor types.
Lower Operating Costs The concentric design generally consumes less energy and requires less maintenance compared to traditional planetary stranders, while delivering higher throughput.
Technical Specifications
| Material | Single Wire Diameter (mm) | Max. Rotation Speed (rpm) | Max. Line Speed (m/min) | Max. Rewinding Speed (m/min) | Loading Weight (kg) |
|---|
| Copper | 1.5 – 5.0 | 550 | 120 | 150 – 200 | 1200 |
| Aluminum | 1.8 – 5.0 | 550 | 120 | 150 – 200 | 360 |
| Aluminum Alloy | 1.5 – 5.0 | 550 | 120 | 150 – 200 | 360 |
Custom configurations and higher-capacity models available to match specific production needs.
Main Parts & System Integration
- Central payoff with concentric rotating cage and internal bobbins
- Dual bobbins and dual flying wings per wire position
- Precision compaction die holder (round and sector)
- Meter counter and dual-wheel capstan
- Intelligent electrical control system
- Compatible take-up (1600 / 2240 / 3000 mm bobbins or coiler)
The machine integrates seamlessly with upstream pay-off and downstream traction/take-up systems.
Primary Applications
- Compacting round or sector-shaped copper and aluminum conductors
- Manufacturing overhead conductors (AAC, AAAC, ACSR)
- Stranding copper flexible conductors
- Cable screening and copper tape shielding
- Steel wire and aluminum wire armoring
- High-volume production of identical-specification stranded products
The RLB Central Stranding Machine integrates seamlessly with pay-off, traction, and take-up systems, making it an ideal upgrade or addition to existing stranding and armoring lines.
Why Choose Our Central Stranding Machine?
- Higher Speed & Better Compaction: Up to 550 rpm with excellent conductor density and uniform lay length.
- True Continuous Production: Dual bobbin and flying wing system minimizes downtime.
- Space & Labor Savings: Internal bobbin design eliminates frequent loading/unloading.
- Versatile & Cost-Effective: Suitable for copper, aluminum, and alloy wires with lower energy and maintenance costs.
- Strong Local Support: Full turnkey installation, operator training, and long-term technical support with spare parts availability in Saudi Arabia.
Frequently Asked Questions (FAQ)
Q1: What is the main advantage of a Central Stranding Machine compared to planetary stranders?
The concentric design with internal bobbins allows much higher rotational speeds, better compaction, continuous production capability, and significantly reduced floor space and labor requirements.
Q2: Can this machine produce both round and sector-shaped conductors?
Yes. The precision die holder supports excellent compaction for both round and sector-shaped conductors.
Q3: Does it support continuous production without stopping?
Yes. The dual bobbin and dual flying wing system enables simultaneous stranding and rewinding or alternate operation for uninterrupted high-output runs.
Q4: What materials and wire sizes can it handle?
It is suitable for copper (1.5–5.0 mm), aluminum (1.8–5.0 mm), and aluminum alloy wires, with bobbin loading up to 1200 kg.
Q5: What is the maximum production speed?
Maximum rotational speed is 550 rpm, with line speeds up to 120 m/min.
Q6: Do you provide installation and support in Saudi Arabia?
Yes. We offer full turnkey installation, commissioning, operator training, and ongoing technical support with local spare parts availability.
Inquiry Now
Contact our technical team today. Within 48 hours we will provide a detailed configuration proposal, ROI calculation, layout drawings, and reference cases from similar GCC projects.
Ready to upgrade your cable stranding efficiency?
Inquiry Now — Let us deliver the high-speed Central Stranding Machine that powers your conductor manufacturing success in Saudi Arabia and the GCC.
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