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China factories

China factory - Phidix Motion Controls (Shanghai) Co., Ltd.

Phidix Motion Controls (Shanghai) Co., Ltd.

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China inner-wire-core-failure-analysis
China inner-wire-core-failure-analysis

  1. China inner-wire-core-failure-analysis
  2. China inner-wire-core-failure-analysis

inner-wire-core-failure-analysis

  1. MOQ： 10 piece
  2. Price： Negotiation
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Payment Terms L/C,D/A,D/P,T/T
Supply Ability 800 pcs per month
Delivery Time 7 - 40 work days
Packaging Details carton or wood case
Type MD,LD,HD,VLD
Serise Push pull cable assembly
Certificate IATF16949
Material Stainless Steel
OEM Yes
Brand Name Phidix
Model Number DFX
Certification IATF16949
Place of Origin Shang Hai

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Product Specification

Payment Terms L/C,D/A,D/P,T/T Supply Ability 800 pcs per month
Delivery Time 7 - 40 work days Packaging Details carton or wood case
Type MD,LD,HD,VLD Serise Push pull cable assembly
Certificate IATF16949 Material Stainless Steel
OEM Yes Brand Name Phidix
Model Number DFX Certification IATF16949
Place of Origin Shang Hai
High Light Inner Wire Core Failure Analysis ，IATF16949 Inner Wire Core

Why Inner Wire Cores Fail – and How to Prevent It

Flexible control cable systems often seem simple on the surface. But the inner wire core—whether it’s 1x7, 7x7, or 7x19—faces constant mechanical stress that can cause failure over time. At Phidix, we help engineers design systems that resist fatigue, avoid jamming, and deliver long-term reliability.

This guide outlines the five most common failure causes, along with preventive design strategies based on industry best practices.
Technical diagram showing 5 failure modes of flexible wire rope cores in control cables, with examples of fatigue, kinking, unraveling, heating, and rust.
Infographic showing the top 5 causes of inner wire core failure: bending fatigue, buckling, strand loosening, frictional heat, and corrosion

1. Bending Fatigue from Tight Routing

What happens:
Repeated bending under tight radii weakens outer strands in wire rope cores, especially in 7x7 or 7x19 configurations.
Prevention:
•  Follow minimum bend radius guidelines (D/d ≥ 15:1 recommended)
•  Use pulley-guided routing where possible
•  Select more flexible cores for dynamic paths; avoid sharp corners
Reference: Cablecraft Design Guide – Flexible Cable Routing Section

2. Compression Deformation from Overload

What happens:
Push-type actuation with excessive compressive force can cause core buckling or kinking, especially in 1x7 and 1x19 cores.
Prevention:
•  Choose solid core or larger-diameter 1x19 for long push distances
•  Match stroke distance with routing design
•  Add inner liner to reduce core friction
Use proof-loading methods per CMA Safety Guide to validate cable stiffness

3. Core Loosening or Unraveling

What happens:
Poorly tensioned or overflexed wire cores can twist, creating strand separation or "birdcaging."
Prevention:
•  Use preformed strand constructions (e.g. 7x7 preformed)
•  Follow correct proof-load tensioning procedures
•  Avoid field trimming without re-terminating

4. Friction-Induced Overheating

What happens:
Uncoated wire cores in long housings with frequent actuation may generate heat from friction, damaging liners or seizing the system.
Prevention:
•  Use PTFE-coated inner wires (e.g. 1x19 or 7x7)
•  Lubricate periodically or select lubricant-embedded liners
•  Avoid over-tight housing paths
Phidix offers factory-lubricated options and PTFE extrusion for core surfaces.

5. Corrosion & Rust-Based Locking

What happens:
Stainless steel cores exposed to marine or chemical environments may still corrode without proper material grade or coatings.
Prevention:
•  Use SUS 316L or marine-grade stainless cores
•  Avoid removing protective PTFE jacket during installation
•  Store cables in dry, sealed containers prior to assembly

Design Insights from the Experts

According to CMA’s Safety Guide and Cablecraft’s Motion Control Design Guide, ensuring that the wire rope is never loaded beyond 80% of its minimum break strength is critical to preventing core failures. 

At Phidix, our inner wire core products are manufactured under the IATF 16949 quality management system, which ensures strict process control, consistent tensile properties, and traceability from material to final inspection. This guarantees not just technical compliance—but real-world safety and performance in demanding mechanical control applications.


Related Pages

•  Inner Wire Core Structure Guide
•  Manufacturing & Quality Capabilities

Need Help Troubleshooting?

Send us photos or system specs, and our engineers will diagnose the failure mode and recommend a compatible inner core configuration—along with drawings or samples if needed.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer,Importer,Exporter,Seller

  • Year Established:

    2004

  • Employee Number:

    100~120

  • Ecer Certification：

    Verified Supplier

Phidix Motion Controls (PMC) | Exclusive Authorized Cablecraft Motion Controls (CMC) Assembler in China Company Profile Established in 2004 as Shanghai Phidix Trading Co., Ltd., PMC became the sole authorized assembler of Cablecraft Motion Controls (CMC) in China in 2011. CMC, formerly a subsidiary... Phidix Motion Controls (PMC) | Exclusive Authorized Cablecraft Motion Controls (CMC) Assembler in China Company Profile Established in 2004 as Shanghai Phidix Trading Co., Ltd., PMC became the sole authorized assembler of Cablecraft Motion Controls (CMC) in China in 2011. CMC, formerly a subsidiary...

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Get in touch with us

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  • Phidix Motion Controls (Shanghai) Co., Ltd.
  • 168-2#, Tingyi Road, Jinshan District, Shanghai,China 201505
  • https://www.mechanical-controlcable.com/

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