YVFRB Cable: High-Flex Flat Control Cable for Dynamic, Space-Constrained Routing
Production stops the moment a single conductor in your control line fails. In high-cycle cable track systems, continuous bending, torsion, and abrasion push standard cables far past their physical limits. The result is unplanned downtime and high replacement labour. YVFRB flat control cables are purpose-built to carry power and signals reliably through these exact conditions. They combine high-cycle flex life with a space-saving flat profile, reducing installation volume and eliminating the need for oversized cable carriers. This translates directly into longer maintenance intervals and lower total installed cost per linear metre.
Designed for Repeatable Motion in Tight Spaces
Fine-stranded bare copper conductors (Class 5/6 IEC 60228)
Standard conductors work-harden and snap under constant movement. By using finely stranded, individually bunched cores, this cable distributes mechanical stress across many more filaments. The conductor stays intact far beyond the cycle count rigid stranding tolerates. No sudden signal loss. No intermittent faults that waste field diagnostic hours.
Flat geometry with compact PVC outer jacket
A round cable stacks high and wastes carrier cross-section. The flat profile of YVFRB nests efficiently into narrow troughs, cable chains, and guide rails. You minimise the bending radius envelope because the cables sit side by side, not on top of each other. This reduces carrier weight and extends the service life of the entire moving assembly.
Special-formulated PVC insulation and jacketing compound
PVC compounds in this series are selected for low-temperature flexibility down to -15 °C and for sustained resistance to mineral oils and cooling emulsions. In factory environments where lubricant mist is constant, standard jackets swell, crack, and short. Here, the jacket maintains its mechanical properties and dielectric strength. Repairs drop. Plant uptime improves.
Core arrangement with optimal neutral axis
Flat cable is not simply squashed round cable. The core lay is adjusted so that each conductor sits as close as possible to the neutral bending plane. Under repeated travel, the strain on individual copper strands is minimised. That mechanical design choice doubles or triples the reliable service life compared to non-optimised flat cables used in the same carrier setup.
Self-extinguishing and flame-retardant (IEC 60332-1-2)
In densely packed cable runs, fire propagation risk matters. The outer jacket stops flame spread along the cable length. This meets standard installation safety requirements for industrial machinery without requiring additional conduit.
Technical Parameters
Below are commonly supplied standard configurations. Values can be tailored to project-specific routing, shielding, and voltage requirements.
| Parameter | Typical Value / Range |
|---|---|
| Conductor material | Bare copper, fine-stranded (Class 5 or 6) |
| Core insulation | PVC compound, colour-coded per VDE 0293-308 |
| Outer jacket | Black PVC (RAL 9005), oil-resistant |
| Rated voltage (U₀/U) | 450/750 V |
| Test voltage | 2500 V (5 min) |
| Temperature range, flexing | -5 °C to +70 °C |
| Temperature range, fixed | -15 °C to +70 °C |
| Minimum bending radius | 7.5× cable thickness (free movement) |
| Number of cores | 4–24 (other counts on request) |
| Nominal cross-section | 0.5 mm² to 10 mm² |
| Maximum travel speed | Up to 240 m/min |
| Maximum acceleration | Up to 30 m/s² |
Custom assemblies with shielded pairs, steel wire braid armour, polyurethane jackets for abrasion-intensive high-bay warehousing, or sub-zero compounds for cold storage are documented in the factory order engineering sheet. Request a proposal with your exact travel distance, bending radius, and ambient conditions.
Where This Cable Runs Problem-Free
- Overhead cranes and gantry systems – Flat profile enters the cable trolley without twisting. Oil-resistant jacket withstands the constant grease and dust cycle.
- Machine tool and CNC wiring – Tight radius routing inside drag chains stays orderly. The cable handles millions of reciprocating tool slide cycles without core breakage.
- Automated storage and retrieval (ASRS) – High acceleration on horizontal and vertical axes pushes conductors hard. YVFRB’s neutral-axis design suppresses early fatigue failure in the track.
- Stage and theatre rigging – Multiple control signals in one flat ribbon simplify looms. The discreet black jacket blends into truss structures while withstanding frequent coiling.
- Cleanroom and lab transport systems – Low-particle-generation PVC jacket and flat, non-shedding form reduce contamination risk compared to braided round cables.
Certification & Compliance Benchmarks
- ✅ IEC 60228 (Conductor construction, Class 5/6)
- ✅ IEC 60332-1-2 (Flame retardance)
- ✅ VDE 0250, Part 602 (Flat PVC cables for control purposes)
- ✅ CE marking per Low Voltage Directive 2014/35/EU
- ✅ RoHS 2011/65/EU, Annex II (no restricted substances)
- ✅ Factory management certified to ISO 9001:2015
Inspection test certificates to EN 10204 type 2.2 are standard with every shipment. Type 3.1 certificates from an independent body are available on pre-agreed orders.
Frequently Asked Questions
How do I determine the correct bending radius for YVFRB in my cable chain?
Use 7.5× the cable’s overall thickness when the cable moves freely inside the carrier. For highly dynamic short-stroke applications with accelerations above 10 m/s², increase the radius to 10× thickness or request a dynamic-test graph from our applications team. Always measure thickness across the flat side.
What is the practical difference between YVFRB and YFFB cables?
Both are flat, but YFFB typically uses a thermoplastic elastomer (TPE) jacket with higher low-temperature flexing capability (down to -40 °C). YVFRB uses a PVC compound that delivers better oil and chemical resistance at ambient factory temperatures. Choose YVFRB when oil exposure dominates; select YFFB for outdoor or cold store duty.
Can you pre-terminate the cable with connectors?
Yes. We supply fully assembled YVFRB cable looms to your connector specification—Harting, Murr, ILME, or heavy-duty industrial rectangular types. Each assembly is continuity-tested and labelled. Pre-assembly reduces on-site wiring hours and eliminates field-crimping variability.
What lead time should I expect for custom core counts?
Standard core counts between 4 and 24 cores ship from stock or within 5 working days for medium-length run quantities. Non-standard configurations with custom jacket colour, shielded elements, or hybrid power-plus-data designs require a 3-week engineering-to-order window. We open a dedicated production slot on receipt of your technical agreement.
Request Engineering Data and a Project-Specific Quote
Use the form below or contact our cable engineering group directly. Include your expected travel length, bending radius, ambient medium, and required approvals. You will receive a detailed technical proposal, a test report sample for the nearest standard configuration, and a delivery schedule based on full-batch manufacturing.
[Get a Technical Proposal]