In high-voltage, medium-voltage, and low-voltage power cable manufacturing, the performance of process bobbins directly determines production speed, coil quality, and long-term equipment reliability. The PN800-5000 Corrugated Steel Cable Drum (also known as PN Reinforced Corrugated Bobbin) is a premium heavy-duty steel reel engineered with a distinctive reinforced corrugated barrel and flange design. Manufactured from high-strength pressed steel plates, these bobbins deliver exceptional rigidity, superior strength-to-weight ratio, and outstanding resistance to deformation — making them the ideal choice for stranding, extrusion, cabling, and armoring lines handling XLPE insulated cables, power cables, steel ropes, and strands.
1. Primary Applications
The PN800-5000 Reinforced Corrugated Steel Cable Drums are specifically developed for demanding cable production environments:
- High-voltage, medium-voltage, and low-voltage power cable manufacturing
- XLPE cable stranding, extrusion, cabling, and armoring processes
- Heavy-duty take-up and pay-off operations for large-diameter cables, steel ropes, and conductors
- Both reusable process bobbins and high-volume production lines in modern cable factories
The corrugated reinforcement ensures stable, vibration-free performance even under high tension and high-speed winding conditions typical of today’s advanced cable equipment.
2. Structural Design & Engineering
These bobbins feature robust pressed steel construction with a reinforced corrugated barrel and flange design. The corrugated (ribbed) structure dramatically increases mechanical strength while reducing overall weight compared to traditional solid drums. Key structural components include:
- Precision-formed corrugated pressed steel flanges for maximum bending strength
- Reinforced corrugated barrel providing superior rigidity and impact resistance
- High-strength welded hubs and support ribs for excellent concentricity
- Smooth inner surfaces that ensure uniform cable layering and easy coil release
This advanced engineering makes the PN series significantly more durable and stable than standard flat-flange steel bobbins, especially when handling large, heavy cable coils.
3. Key Features & Benefits
- Reinforced Corrugated Design — Unique ribbed barrel and flanges deliver exceptional strength-to-weight ratio and deformation resistance
- High Rigidity & Dynamic Balance — Precision manufacturing minimizes vibration at high speeds, extending machine life
- Heavy-Duty Load Capacity — Optimized for large winding volumes and high-tension applications
- Long Service Life — High-quality pressed steel construction withstands continuous industrial use
- Versatile Compatibility — Perfect for stranding machines, extruders, cablers, and armoring equipment
- Full Customization Available — Dimensions, bore size, and surface treatment tailored to exact customer specifications
4. Industry Standards & Technical Specifications
PN800-5000 Corrugated Steel Cable Drums are manufactured in strict accordance with major international standards:
- GB4004-83
- JB/T8997.4-1999
- DIN 46395
Or fully customized to client drawings and requirements.
Technical Specifications (representative models):
| Type | d₁ (mm) | d₂ (mm) | d₃ (mm) | d₄ (mm) | d₅ (mm) | e (mm) | L₁ (mm) | L₂ (mm) | V₁ (dm³) |
|---|
| 800 | 800 | 400 | 102 | – | 28-40 | 160 | 600 | 500 | 188.5 |
| 900 | 900 | 450 | – | – | – | – | 670 | 560 | 267.2 |
| 1000 | 1000 | 500 | – | 80 | 28-40 | 160 | 750 | 630 | 371.1 |
| 1150 | 1150 | 560 | – | – | – | – | 850 | 710 | 524.6 |
| 1250 | 1250 | 630 | 160 | – | – | – | 950 | 800 | 732.4 |
| 1400 | 1400 | 710 | – | – | – | – | 1060 | 900 | 1029.1 |
| 1600 | 1600 | 800 | – | – | – | – | 1180 | 1000 | 1508.0 |
| 1800 | 1800 | 1000 | 140 | 100 | – | – | 1320 | 1120 | 1970.4 |
| 2000 | 2000 | 1120 | – | – | – | – | 1500 | 1250 | 2695.5 |
| 2240 | 2240 | 1250 | 158 | 125 | 70-130 | 300 | 1700 | 1400 | 3799.1 |
| 2500 | 2500 | 1500 | – | – | – | – | 1900 | 1600 | 5026.5 |
| 2800 | 2800 | 1800 | 168 | 140 | – | – | 2120 | 1800 | 6503.1 |
| 3150 | 3150 | 1900 | 194 | 160 | – | 500 | 2300 | 2000 | 9915.6 |
Note: Custom sizes up to PN5000 and special surface treatments (e.g., painting or galvanizing) are available upon request.
5. Why Choose PN800-5000 Reinforced Corrugated Steel Cable Drums?
The innovative corrugated reinforcement technology provides the perfect balance of high strength, reduced weight, and superior durability. Cable manufacturers benefit from higher winding speeds, better coil quality, lower maintenance costs, and extended bobbin service life — critical advantages in competitive high-voltage and XLPE cable production.
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