Infographic on vibration isolator benefits and applications.

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

Product Resources

Helical Isolators: Shock and Vibration Solutions

Helical Isolators: Shock and Vibration Solutions

Helical Isolators: HM10062 Series

Helical Isolators: HM10062 Series

Helical Isolators for Medical Equipment Design

Helical Isolators for Medical Equipment Design

Applications:
Helical isolators protect a broad range of loads:

  • Very fragile (electronic equipment, computer hardware, optical devices).
  • Highly substantial (heavy engines, machinery––during transit or while in operation, even in a moving vehicle).

See table below for more details.

ApplicationsTypical EquipmentProtection FromOperational Advantages
ShipboardElectronics, Computers, MachineryExplosive blast, Inherent vibration, StormsLong life, Maintenance free, Temperature extremes, Corrosion resistance, All axes protection
Rough Terrain VehiclesInstrumentation, Generators, ElectronicsRough terrain, Poor road conditions, CollisionLong life, Maintenance free, Temperature extremes, Ozone, Radioactivity, UV Radiation
AircraftElectronics, ComputersHigh-G maneuvering, Hard landings, Turbulent airTemperature and altitude extremes, Lightweight
Shipping CasesOptics, Instruments, Missiles, ElectronicsTransit, Handling drop, Loading/UnloadingLong life, Maintenance free, Exposure to moisture, Repeated use
Industrial EquipmentCentrifuge, Dryers, PumpsUnbalanced dynamic loads, Fluid hammer, Inherent vibration, Foundation weaknessLong life, Maintenance free, Corrosive environments
Ordnance EquipmentMissile launcher, Tank artillery, Computer controls, ElectronicsRough terrain, Railroad humping, TransitMaintenance free, Temperature extremes, Nearby blast
Medical EquipmentMechanical equipment necessary for patient careVibration from moving parts, Mobile carts-Transport shockMaintenance free, No outgassing, Can be sterilized
ChimneysChimneys, Scrubbers, Measuring devicesWind causing resonant frequencies, Stack gas causing turbulence near scrubber, etc.Maintenance free, Temperature extremes, Corrosive environments

Options:

  • Iridited aluminum bars are standard; however, other materials and finishes can be used.
  • Variations in cable configuration are available if the standard is not suitable.

From basic transportation to aerospace, there is an application for Helical Isolators from America’s Oldest Springmaker.

Design Options and Customization

  • Standard finish:   aluminum bars
  • Available upon request: Stainless steel, other coatings, or materials
  • Custom cable configurations: Tailored to load capacity, frequency range, and installation footprint

Why Choose Helical Vibration Isolators?

At John Evans’ Sons, America’s oldest spring manufacturer, our designs for helical vibration isolators (also known as cable mounts or helical mounts) deliver industry-leading protection against shock and vibration. These all-metal isolators provide reliable, maintenance-free performance in the harshest environments across aerospace, defense, medical, industrial, and transportation sectors.
Trust us to deliver advanced shock and vibration isolation technology. Backed by over 175 years of spring manufacturing excellence, our helical isolators are engineered for performance, durability, and protection—wherever you need them.

 

Shock & Vibration Isolators 1
Shock & Vibration Isolators 2

Data Sheets by size (PDF) Click a series to view and/or download.

HM10093 series Download PDF

HM10093 series

.093″ dia. cable

HM10187 1 thru 6 series Download PDF

HM10187 1 thru 6 series

.187″ dia. cable

HM10187 7 thru 12 series Download PDF

HM10187 7 thru 12 series

.187″ dia. cable

HM10125 series Download PDF

HM10125 series

.125″ dia. cable

HM10156 series Download PDF

HM10156 series

.156″ dia. cable

HM08250 series Download PDF

HM08250 series

.250″ dia. cable

HM06375 series Download PDF

HM06375 series

.375″ dia. cable

HM08375 series Download PDF

HM08375 series

.375″ dia. cable

HM06500 series Download PDF

HM06500 series

.500″ dia. cable

HM08500 series Download PDF

HM08500 series

.500″ dia. cable

HM08625 series Download PDF

HM08625 series

.625″ dia. cable

HM08875 series Download PDF

HM08875 series

.875″ dia. cable

Got A Question? Consult our Experts.

Our Technical Team offer a depth of expertise to assist you with all parts of the process. We are ready to answer your questions in a timely manner and will help you define what you need. We produce custom springs for all purposes, and we are here to work with you on any of your customization needs.