Industry-Verified Manufacturing Data (2026)

Strain Relief/Backshell

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Strain Relief/Backshell used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Strain Relief/Backshell is characterized by the integration of Clamping Mechanism and Backshell Body. In industrial production environments, manufacturers listed on CNFX commonly emphasize Aluminum alloy construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A protective component that secures cables and prevents mechanical stress at the connection point of an ATE connector.

Product Specifications

Technical details and manufacturing context for Strain Relief/Backshell

Definition
The strain relief/backshell is a critical component of ATE (Automatic Test Equipment) connectors that provides mechanical protection and cable management. It serves as a housing that encloses the rear portion of the connector, securing the cable bundle and preventing excessive bending, pulling, or twisting forces from being transmitted to the electrical contacts. This ensures reliable signal integrity and prevents connection failures in high-vibration or harsh industrial environments.
Working Principle
The strain relief/backshell mechanically clamps or secures the cable jacket using compression fittings, clamps, or adhesive systems. It distributes any external mechanical forces (tension, bending, vibration) across the cable structure rather than allowing them to concentrate at the fragile solder joints or crimp connections inside the connector. The backshell portion provides environmental sealing and electromagnetic shielding in many applications.
Common Materials
Aluminum alloy, Stainless steel, Thermoplastic
Technical Parameters
  • Cable diameter range compatibility (mm) Customizable
Components / BOM
  • Clamping Mechanism
    Secures the cable jacket through compression to prevent pull-out
    Material: Stainless steel
  • Backshell Body
    Provides structural housing and environmental protection
    Material: Aluminum alloy
  • Sealing Gasket
    Creates environmental seal between backshell and connector
    Material: Silicone rubber
  • Grounding Lug
    Provides electrical grounding connection for shielding
    Material: Brass
Engineering Reasoning
0-50 N·m torque application, -55°C to 125°C temperature range
Cable retention force drops below 15 N at connector interface, material tensile strength exceeds 60 MPa
Design Rationale: Polymer chain scission under cyclic mechanical stress exceeding 0.5% strain amplitude, glass transition temperature (Tg) crossover at 85°C for thermoplastic elastomers
Risk Mitigation (FMEA)
Trigger Cable bending radius violation below 6× cable diameter
Mode: Conductor fatigue fracture at 10⁶ stress cycles
Strategy: Integral strain relief boot with 8 mm minimum bend radius limiter
Trigger Thermal cycling between -40°C and 105°C at 2 cycles/hour
Mode: Polymer embrittlement and crack propagation at 0.2 mm/year rate
Strategy: Fluorosilicone compound with 200% elongation at -55°C

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Strain Relief/Backshell.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Not applicable (mechanical component, not pressure-rated)
other spec: Cable diameter range: 3mm to 25mm, Vibration resistance: Up to 10g RMS, IP rating: IP67/IP68 (environmental sealing)
temperature: -55°C to +125°C (operational range, typical for industrial-grade polymers)
Media Compatibility
✓ Industrial control cables (PVC/jacketed) ✓ Aviation/military connectors (MIL-DTL-38999 series) ✓ Marine/offshore electrical systems (saltwater environment)
Unsuitable: High-temperature (>150°C) or corrosive chemical immersion environments
Sizing Data Required
  • Cable outer diameter (OD) including jacket
  • Connector shell size/thread specification
  • Required bend radius protection (minimum radius)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Cable Pull-Out
Cause: Inadequate clamping force or improper installation allowing cable movement under vibration/tension
Connector Pin Damage
Cause: Excessive bending stress at cable entry point due to lack of proper strain relief, leading to internal wire breakage
Maintenance Indicators
  • Visible cable movement or rotation at backshell interface
  • Audible clicking/creaking from connector during equipment operation or movement
Engineering Tips
  • Use torque-controlled installation tools to ensure proper clamping force without over-tightening
  • Implement regular inspection protocols for cable bend radius compliance and backshell alignment

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems IEC 60529 Degrees of Protection Provided by Enclosures (IP Code) MIL-DTL-38999 Series I Connectors, Electrical, Circular, Miniature, High Density, Quick Disconnect, Environmental Resistant, Removable Crimp and Hermetic Solder Contacts
Manufacturing Precision
  • Thread Engagement: +/-0.1mm
  • Cable Clamp Bore Diameter: +/-0.05mm
Quality Inspection
  • Pull Test (Cable Retention Force)
  • Salt Spray Test (Corrosion Resistance per ASTM B117)

Factories Producing Strain Relief/Backshell

Verified manufacturers with capability to produce this product in China

✓ 96% Supplier Capability Match Found

P Procurement Specialist from Australia Feb 20, 2026
★★★★★
"Reliable performance in harsh Computer, Electronic and Optical Product Manufacturing environments. No issues with the Strain Relief/Backshell so far."
Technical Specifications Verified
T Technical Director from Singapore Feb 17, 2026
★★★★★
"Testing the Strain Relief/Backshell now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
P Project Engineer from Germany Feb 14, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

17 sourcing managers are analyzing this specification now. Last inquiry for Strain Relief/Backshell from Thailand (1h ago).

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Frequently Asked Questions

What materials are available for this strain relief backshell?

This backshell is available in aluminum alloy for lightweight durability, stainless steel for maximum corrosion resistance, and thermoplastic for cost-effective electrical insulation.

How does this backshell protect ATE connector cables?

The clamping mechanism secures cables at the connection point, preventing pull-out and bending stress that can damage wires, while the sealing gasket provides environmental protection.

What components are included in the backshell assembly?

Each unit includes the backshell body, clamping mechanism for cable retention, grounding lug for electrical safety, and sealing gasket for environmental protection.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

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