High-flexibility drag chain shielded cable
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Flexible Drag Chain Cable
High‑Flex, Wear‑Resistant & Long‑Lasting
High‑performance special‑purpose cable designed for CNC equipment, robots and automated production lines. Passed millions‑of‑cycles bending test, ensuring stable signal transmission and power delivery while lowering downtime and maintenance costs.
Product Overview
Drag Chain Cables are special cables installed on robots, CNC machine tools, material‑handling systems, 3D printers and other equipment subject to repeated flexing, expanding and retracting along with robotic arms or sliding systems. Different from fixed‑installation cables, the core challenge for drag chain cables lies in "dynamic bending": under continuous bending, twisting and stretching, they must guarantee uninterrupted signal and power supply while resisting jacket cracking and conductor fatigue.
Longzhiyi Cable adopts multi‑dimensional helical stranded conductors plus highly elastic PUR/TPE outer‑sheath structure. This allows each conductor layer to slide freely without tension under 3‑dimensional bending, fundamentally solving three major pain points of conventional cables: knotting, wrinkling and core‑wire breakage, and greatly extending service life.
- Multi‑layer helical stranding, minimum bending radius down to 3D × cable outer diameter, saving installation space
- PE filling plus shielding structure for anti‑EMI performance and error‑free signal transmission
- Non‑migrating internal plasticizer formulation; no hardening or cracking after long‑term operation
- Optional break‑detection wire for intuitive fault location
Product Highlights at a Glance
Core Performance Characteristics
Every design targets harsh industrial operating conditions for longer service life and more stable signal transmission
Extended Bending Life
Laboratory‑tested for 5‑million drag‑chain bending cycles, over 10 times longer than ordinary industrial cables, greatly reducing downtime for cable replacement.
Multi‑Dimensional Flexible Structure
Special conductor stranding process enables deformation‑free bending in all 360° directions; bending radius can reach as low as 6D × outer diameter.
Superior Wear & Aging Resistance
PUR polyurethane outer sheath delivers outstanding wear resistance, oil resistance, acid‑alkali resistance, ozone resistance and mildew resistance.
Zero‑Interference Signal Performance
Dual‑layer shielding, jacketed stranding and independent signal isolation fully block EMI/RFI interference, ideal for servo drives, encoders and sensor communication.
Wide Operating Temperature Range
Resists cracking at ‑20℃ and withstands up to 105℃, ensuring stable performance year‑round.
Environmental‑Friendly & Safe
Customizable LSZH (Low‑Smoke Zero‑Halogen) flame‑retardant option; no toxic or corrosive gas during combustion, meeting industrial and marine safety requirements.
Technical Parameters
Below are typical drag‑chain cable specifications; custom parameters available for actual working conditions
Standard Composition
Understand each layer for easier selection and fault analysis
Conductor
Multi‑strand tinned copper wire stranding to guarantee flexibility and conductivity
Insulated Cores
PVC insulation with color‑coded cores, rated 300/500V
Shielding Layer
Dual‑layer Al‑foil plus copper braid for electromagnetic interference suppression
Outer Sheath
PVC/TPU elastic outer jacket, wear‑resistant, flex‑resistant and crack‑proof
Drag‑Chain Cable Selection Guide
Four‑step quick matching for your application requirements, or contact our technical team for free selection support
Define Application & Core Count
Distinguish power supply (large cross‑section), signal transmission (small cross‑section) or hybrid usage; confirm required conductor cross‑section (AWG/mm²) and core‑count combinations.
Confirm Installation Environment & Temperature
Indoor/outdoor, fixed/moving installation, oil/chemical‑solvent exposure, plus maximum and minimum operating temperature. Select sheath material accordingly (PUR/TPE/PVC).
Bending Radius & Travel Stroke
Calculate minimum cable bending radius and length allowance based on equipment bending radius, drag‑chain mounting spacing and maximum travel stroke to avoid mechanical interference.
Confirm Certifications & Standards
Export customers shall verify requirements for CE, RoHS, UL and other certifications; upgrade to LSZH or fire‑retardant versions for high‑risk industrial scenarios.
Typical Application Fields
Widely deployed in industrial automation and high‑end equipment manufacturing
CNC Machining Centers
Spindle servo power and encoder feedback signal transmission; flex‑resistant and anti‑interference.
Laser Cutting Machines
High‑temperature tolerance and EMI suppression to guarantee laser positioning accuracy.
Milling / Lathe Machines
Multi‑axis motion control with error‑free signals, extending control‑system service life.
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