Canted Coil Springs: Electrical Contact, Retention & EMI Shielding Solutions
One spring. Three critical engineering functions.
Canted coil springs are precision-engineered conductive spring components designed to provide reliable electrical contact, mechanical retention, and EMI/RFI shielding in a single compact solution.
With their unique angled coil geometry, these springs deliver near-constant force, multi-point electrical contact, and consistent performance under vibration, making them ideal for demanding aerospace, medical, RF, and industrial applications.
Wann werden Canted Coil-Federn verwendet?
Canted coil springs are the preferred solution when:
- Stable electrical contact is required under vibration or movement
- Both mechanical retention and conductivity must be achieved simultaneously
- Reliable EMI/RFI shielding and grounding are critical
- Space is limited but high performance is required
- Long cycle life and consistent force are essential
Three Core Engineering Functions in One Component
Unlike conventional springs, canted coil springs combine multiple functional capabilities into a single engineered component.
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Elektrische Leitfähigkeit
- Low contact resistance (< 10 mΩ)
- Multi-point contact ensures stable current transfer
- Ideal for connectors, battery contacts, and grounding systems
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Mechanical Retention & Connection
- Controlled insertion and retention forces
- Excellent elastic recovery for repeated cycles
- Suitable for locking, latching, and connector applications
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EMI/RFI-Abschirmung
- Continuous conductive path for effective EMI suppression
- Maintains grounding integrity across interfaces
- Performs reliably under vibration and dynamic conditions
Why Engineers Choose Canted Coil Springs
- Near-constant spring force across wide deflection range
- Multi-point contact ensures reliable conductivity
- Compensates for misalignment and surface irregularities
- Excellent performance under vibration and dynamic conditions
- Long cycle life with minimal compression set
- Compact design for space-constrained applications
Canted Coil Springs vs Other Contact & Shielding Solutions
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Compared to Fingerstock
- More stable and consistent contact force
- Better suited for dynamic and high-cycle applications
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Compared to Conductive Elastomers
- Lower electrical resistance
- Longer operational life
- More stable performance under temperature variations
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Compared to Traditional Springs
- Multi-point contact vs single-point contact
- Constant force vs variable force behavior
How to Select the Right Canted Coil Spring
Selecting the correct spring depends on your application priorities:
1. Functional Requirement
- Electrical performance Electrical Contact Springs
- Mechanical retention Retention Springs
- EMI protection EMI-Abschirmungsfedern
2. Force Requirements
- Light force for sensitive contacts
- Medium force for general applications
- Heavy force for secure retention
3. Materialauswahl
- Beryllium Copper → high conductivity
- Stainless Steel → corrosion resistance
- Elgiloy → extreme environments
- Hastelloy / Inconel → high temperature & corrosion resistance
Kundenspezifische Fertigung
Design & Performance Characteristics
The performance of a canted coil spring is defined by several key parameters, including wire diameter, coil height, coil width, spacing, and coil angle. These variables can be precisely engineered to control contact force, electrical resistance, and mechanical behavior. Sie können die relevanten Daten wie in der Abbildung rechts angeben, und wir können das Produkt entsprechend Ihren Anforderungen anpassen.
- Adjustable force range: from light contact to heavy retention
- Configurable as radial or axial spring designs
- Available in welded rings or continuous lengths
- Optimized groove design for specific applications
Materials & Plating Options
Different materials can be selected based on specific operating conditions and requirements.
- Rostfreier Stahl
- MP35N
- Elgiloy
- Beryllium-Kupfer-Legierung
- Platin-Iridium
- Hastelloy
- Zirkonium-Kupfer
- Titan
- Inconel
Beschichtung
Canted Coil Springs plating is a crucial process that enhances the performance and longevity of canted coil springs. By applying a protective coating, it increases resistance to corrosion, wear, and electrical conductivity. This process is vital for ensuring reliable connections in demanding applications, such as aerospace, medical devices, and industrial machinery.
Eine ordnungsgemäße Beschichtung erhöht die Haltbarkeit und Leitfähigkeit der Feder, was zu einer verbesserten Leistung und längeren Lebensdauer führt. Vertrauen Sie auf unsere fachkundigen Beschichtungsservices, die bei jeder Anwendung höchste Qualität und Präzision gewährleisten.
- GOLD – high reliability applications
- TIN – cost-effective solution
- SILBER – best electrical conductivity
- CUSTOM
- NICKEL – wear and corrosion resistance
Technical Advantages in EMI & Electrical Applications
- Continuous conductive path improves EMI shielding effectiveness
- Multi-point contact minimizes resistance fluctuation
- Stable force ensures long-term grounding reliability
- Suitable for high-frequency and precision electronic systems
Typische Anwendungen
- Luft- und Raumfahrt und Verteidigungssysteme
- Medical and surgical equipment
- RF and telecom enclosures
- Industrial connectors and automation systems
- Energy and power applications
Custom Manufacturing Capabilities
Handa Shielding specializes in high-performance canted coil spring manufacturing with full customization support.
- Custom sizes and profiles based on drawings
- Precision wire forming and controlled heat treatment
- Advanced alloy processing capabilities
- Multiple plating options
- Rapid prototyping and fast production
Request Engineering Support
Need help selecting the right spring? Our engineering team can support your design, material selection, and performance optimization.
- ✔ Send your drawings for review
- ✔ Get custom design recommendations
- ✔ Request samples for testing
Contact Handa Shielding today to start your project.
FAQ
What makes canted coil springs different from traditional springs?
Unlike traditional springs, canted coil springs provide near-constant force and multi-point contact, improving reliability in electrical and mechanical applications.
Can one spring perform multiple functions?
Yes, canted coil springs can simultaneously provide electrical conductivity, mechanical retention, and EMI shielding.
What industries use canted coil springs?
They are widely used in aerospace, medical, telecom, industrial, and energy applications.
Are custom designs available?
Yes, all springs can be customized based on application requirements, including size, material, and plating.