A canted coil spring cannot be designed independently from its groove. The spring may determine the available force, deflection behavior, material, and electrical characteristics, but the groove determines how that spring is positioned and compressed inside the actual assembly.

Axial and radial canted coil springs share the same basic spring technology, but they are designed to respond to compression in different directions. This difference affects how the spring is installed, how it interacts with the mating components, how the groove should be designed, and how contact force develops during assembly.

Electrical contact performance is often treated as a material problem. Choose a highly conductive alloy, add a conductive plating, and the connector should perform well. In practice, reliable electrical contact is much more complex. A contact interface must remain mechanically stable while carrying current. The spring has to maintain sufficient contact force despite manufacturing tolerances, thermal expansion, vibration, repeated insertion, surface wear, and environmental exposure. If the mechanical interface changes, the electrical performance changes with it.

Compare Canted Coil Springs and Finger Stock for EMI/RFI shielding, electrical contact reliability, connector retention, vibration resistance, fatigue life, and high-current applications. Learn how Ivex Engineering helps engineers select the right precision spring solution.

n high-current electrical systems, maintaining stable, low-resistance contact is critical for safety, efficiency, and long-term reliability. Applications such as EV battery connectors, power distribution units, industrial robotics, and energy storage systems all rely on consistent electrical contact under demanding mechanical and thermal conditions. However, one of the most overlooked design decisions is this: Which spring type should be used to maintain electrical contact under high current loads? Choosing the wrong spring can lead to overheating, voltage drop, contact failure, and premature system degradation.

In modern electrical systems, maintaining low and stable contact resistance is critical for performance, efficiency, and long-term reliability. From EV battery systems to industrial connectors and power distribution units, even small increases in contact resistance can lead to overheating, energy loss, and system failure. Yet in real-world applications, many connector designs experience rising contact resistance over time. Understanding the root causes of this issue is the first step toward designing more reliable electrical interfaces.