Cables in drag chains crack, lose signal, or break after thousands of bends. Cheap PVC jackets split under cutting oil and coolant. Poor conductivity causes motor overheating and unplanned downtime on the shop floor.The 8.5RVV 3×1.25mm² flexible cable is built to fix that. Stranded pure copper conductors sit inside a specially compounded PVC sheath rated for continuous flexing in cable carriers. It handles machine tool control circuits and low-voltage motor power supply up to 300/500V — without the premature failure.Core Parameters
| Specification | Detail |
|---|---|
| Model | 8.5RVV |
| Conductor | Stranded pure copper, Class 5 (IEC 60228) |
| Cores | 3 |
| Cross-section | 1.25 mm² |
| Approx. outer diameter | 8.5 mm |
| Voltage rating | 300/500V |
| Insulation | Special PVC compound |
| Sheath | Oil & abrasion resistant PVC |
| Min. bend radius | 5× OD (continuous flex) |
| Operating temperature | -15°C to +70°C (fixed); -5°C to +70°C (flexing) |
| Reference standard | IEC 60227 / VDE 0281 |
Built for Real Machine ConditionsDrag chain rated — tested to 10 million flex cycles. The 8.5RVV construction uses a high-flex PVC formulation that resists fatigue cracking in energy chains. No conductor breakage under repeated reciprocating motion on CNC axes.Resists oil, coolant, and metal shavings. The outer sheath is compounded for machining environments. It does not swell, harden, or crack after prolonged exposure to cutting fluids, hydraulic oil, or emulsion mist — common killers of standard control cables.Stable conductivity under movement. Stranded pure copper maintains low resistance even after constant bending. Voltage drop stays under 3% at full load, which matters for motor power feeds and sensor signals that cannot afford drift.Compact size fits tight cable carriers. At 8.5 mm overall diameter, this 3-core cable fits most standard and mini drag chains without forcing. Leaves room for signal lines or pneumatic hoses in the same carrier.Where It Is UsedCNC machining centers, lathes, milling machines, EDM equipment — anywhere control signals and motor power travel through a cable chain. Also common in robotic arms, conveyor systems, packaging machines, and automated assembly lines with moving cable carriers.Get a Quote With ConfidenceWe produce 8.5RVV cables in custom core counts, cross-sections, jacket colors, and lengths from 1 m to 500 m. MOQ starts at 100 m for standard specs. Samples ship within 3 business days. Bulk orders: 10–15 days. Every batch ships with a factory test report.Need a non-standard 8.5RVV drag chain cable or motor power cable? Send us your specs — we reply with pricing and lead time within 24 hours.