John Evans’ helical vibration isolators provide the ultimate shock and vibration protection.
Why is shock and vibration protection so important?
Shock and vibration dramatically impact the performance, accuracy, and lifespan of mechanical and electronic equipment. From delicate sensors and optics to heavy industrial machinery, all systems benefit from effective isolation to prevent damage, ensure longevity, and maintain functionality during operation and transit.
What is a Helical Isolator
The purpose of a helical shock and vibration isolator is to minimize vibrations and shocks by absorbing or redirecting energy to reduce its impact. Typically, shock and vibration absorption protection is accomplished by combining a resilient element (metal mesh, an elastomer, a steel spring, etc.) and a metallic supporting frame.
What Sets Helical Isolators Apart?
Unlike traditional dampers that rely on rubber or elastomers, helical shock and vibration isolators manufactured by John Evans’ Sons use aircraft-grade stainless steel wire rope. The steel wire rope is wound into a helix and secured with metal retaining bars. This configuration offers:
- High-performance damping. Coulomb damping of 15–17% of critical (C/Cc).
- Durable construction. All-metal design resists corrosion, temperature extremes, UV radiation, and more.
- Multidirectional protection. Isolates shock and vibration in compression, tension, shear, and roll across all axes.
- Wide load range. Cable diameters from 1/16” to 1” + support loads from a few pounds to thousands.
Key Benefits of John Evans’ Helical Shock and Vibration Isolators:
- Maintenance-free and long-lasting
- Excellent resistance to harsh environments
- Operates in any orientation
- Customizable cable configurations
- Suitable for both light and heavy-duty applications
