4-Core 1.5mm² PUR Flexible Cable | Custom Length Manufacturer

Cables inside a drag chain fail without warning. A cracked jacket lets in coolant, insulation breaks down, and a 24-hour production line stops dead. The immediate cost is downtime. The hidden cost is scrap, rush freight charges, and an extra shift of warranty maintenance.

The 4-core 1.5mm² PUR cable solves this at the bill-of-materials level. Its polyurethane jacket is built for flexing, abrasion, and constant exposure to mineral oils. The predictable mechanical life means your machine-build schedule stays intact, and end-user field failures drop below your contracted warranty threshold.

Why Polyurethane Changes the Cost Equation

PUR Jacket – Inherently Tough, Not Just Plastified PVC.
A polyurethane compound cures into a dense, low-friction surface. It resists micro-tearing better than PVC under repetitive bending.
This means cable track life extends well past two million cycles on a standard bend radius test – fewer unplanned line stops and no lubricant swelling that hardens the jacket.

4-Core 1.5 mm² Stranded Copper – Fine Wire, Low Stress.
The conductors use Class 5 or Class 6 bare copper stranding. Fine filaments spread bend stress across a larger number of strands instead of concentrating it on a single thick wire.
The project benefit is a longer flex life inside a cable carrier, and the conductor doesn’t fatigue at the termination point inside the control cabinet.

Custom Cut Lengths and Sub-Assembly Ready.
Order exactly the meter length you spec on the BOM. The cable arrives pre-cut, labelled, and coiled on proprietary drums matching your panel-shop workstation layout.
On your floor, this cuts linear waste by up to 7% – no remnant spool inventory and no labour cost for manual measuring and cutting.

Hydrolysis and UV Resistance – Outdoor-Ready Without Conduit.
Standard ether-based PUR can absorb moisture from hot, humid air and start softening. Choose our ester-based or hybrid PUR compound, and the jacket stays elastic down to -40°C while resisting cracking under direct UV exposure for more than 1,000 hours in ASTM G154 testing.
For solar trackers, gantry cranes, or outdoor lift stations, this eliminates the need for a secondary UV shield and brings down your total landed cost per connectorized assembly.

Technical Specifications

Industry Applications

• CNC machining centres and automated milling lines
  Coolant spray and sharp metal swarf eat PVC in weeks. PUR jacket survives daily immersion in water-glycol coolants and resists cut-through from hot chips.

• Robotic arm dress packs and 7th-axis wiring
  Torsion and multi-axis movement accelerate conductor fatigue. The fine-stranded 4-core design handles ±180° twist per meter without internal core migration.

• Onshore and offshore wind turbine pitch control
  Cold start conditions bring the temperature down to -35°C on the nacelle floor. The PUR jacket stays flexible in the cold, so the pitch motor receives stable control voltage without jacket cracking.

• Automated guided vehicles (AGVs) and mobile skid systems
  Cables drag across the warehouse floor and run over debris. Abrasion resistance keeps the jacket wall thickness intact beyond 50,000 dragging cycles on grit-coated concrete.

• Food and beverage processing (dry zones)
  Washdown-tolerable PUR resists weak acids and cleaning detergents better than PVC. Use it for conveyors and filling machine sensor trunks, where frequent spray-downs happen and jacket durability reduces sanitation shift downtime.

International Compliance & QA Standards

✅ CE Marking – Low Voltage Directive 2014/35/EU applied
✅ RoHS 3 (EU 2015/863) compliant – no restricted phthalates or heavy metals
✅ IEC 60332-1-2 – flame retardant, single vertical wire test
✅ Oil resistance tested per IEC 60811-404 at 100°C mineral oil immersion
✅ UV degradation test per ASTM G154 (Cycle 1) – suitable for outdoor use
✅ Insulation and sheath raw materials sourced from ISO 9001:2015 certified compounders
✅ Full traceability back to copper rod batch – mill test reports available on request
✅ Custom UL AWM/CSA listing prepared on demand for panels shipped to North America

FAQ

We need a 4-core cable for a drag chain running 5 m/s and 30 m/s² acceleration. What bending radius and jacket type do you recommend?
At 5 m/s with high acceleration, standard PUR with a 7.5 x O.D. bending radius works if the unsupported length is correctly calculated. We often supply a hybrid TPU-PUR blend with a slightly lower shore D hardness to reduce whip. For this speed, the cable outer diameter should stay below 9.5 mm to limit inertial drag; you will need to confirm the complete cable weight per meter in your layout. Send us the free-hanging length and travel, and our application engineer will verify under your cycle rate.

Can this 4-core 1.5mm² PUR cable be supplied with a green-yellow earth core instead of four numbered blacks?
Yes. Standard core colour options include green-yellow plus three black numbered cores, or a brown/black/grey/green-yellow configuration matching IEC 60445. Just specify the colour code on your PO. At custom lengths, the colour code change adds no tooling cost.

How do you control the jacket concentricity to avoid thin spots in continuous flex applications?
We use in-line laser diameter gauge feedback during extrusion. The target minimum jacket wall thickness is 0.8 mm, and the worst-case eccentricity is below 15%. Every master drum is sampled, and the min-wall reading is recorded on the drum label. If your design requires sub-12% eccentricity for a non-standard outer diameter, ask about a tighter extrusion tolerance batch.

Get a Project-Specific Quote in Under 24 Hours

Send your cable routing length, cycle count, and ambient conditions. We return a data sheet with the recommended bending radius, jacket compound, and a delivered price for your project.

Request a free sample coil, or talk directly with an engineer about custom print legends, twisted-pair variants, and pre-terminated assemblies.