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 influence the performance and life expectancy of nearly every kind of mechanical and electrical device, large or small.

What added benefits do isolators provide?

Typically, protection from shock and vibration absorption is accomplished by combining a resilient element (metal mesh, an elastomer, a steel spring, etc.) and a metallic supporting frame. However, the helical vibration isolator, also known as a helical mount or a cable mount, provides a higher level of isolation from shock and vibration than any other type of isolation device. Helical mounts provide a coulomb damping of 15-17% of critical (C/Cc).

What makes John Evans’ isolators so effective?

  • Our helical vibration isolators (also referred to as spring vibration isolators) are made of aircraft-quality stainless steel cable, wound into metal retaining bars prepared for surface mounting.
  • The wire rope (ranging in diameter from 1/16” to 1”+) and its helix configuration provide the specific resilience required to cushion fragile loads as small as a few pounds or substantial loads of many thousands of pounds, and absorb vibration through a wide frequency spectrum.
  • The isolator operates well in any position: in compression, extension, shear, and roll.
  • Our isolators protect all axes simultaneously.
  • All-metal construction makes our isolators virtually impervious to severe environments, and maintenance free.

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.

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.