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Shock absorbers for light loads

GAMMA LOW MASS SHOCK ABSORBERS

Our shock absorbers are no exception to the general trend towards downsizing on-board equipment, demanded by manufacturers in a wide range of sectors who are keen to reduce the weight of their equipment and thus cut fuel consumption. GAMMA is meeting this challenge with lighter, smaller shock absorbers that retain their essential functions: effective damping over a wide frequency range in harsh environments.

This family of shock absorbers for light loads is made up of 2 main sub-categories:

  • shock absorbers with high anti-vibration performance,
  • shock absorbers with decoupling function.
Isolator for carrying low loads GAMMA 885
Isolators for carrying low loads GAMMA 1_DGP
  • Operating temperatures:-55° to 150 °C
  • Vibration levels +/-1.5 mm
  • Frequency from 10Hz

FIELDS OF APPLICATION

  • Suspension of cabinets or racks
  • Sensitive electronic equipment
  • Inertial navigation systems
  • Optical equipment
  • Optronic aiming or pointing equipment

EXAMPLES OF SHOCK ABSORBERS FOR LIGHT LOADS

Isolators for carrying low loads for acceleromers and MEMS For MEMS
Low loads isolators for hard disk insulation For hard disk
Isolators for carrying low loads such PCB and electronic boards For PCB
GAMMA low load isolator for fiber optic gyroscopes -FOG For FOG
Gamma grommet and shouldered washer items for low loads Grommet
GAMMA low load isolator for soft-stopper Soft Stopper

SHOCK ABSORBER WITH HIGH ANTI-VIBRATION PERFORMANCE

There are a wide range of applications in this category, with high-performance insulators for making suspensions, for example: 

  • fibre-optic gyroscopes, 
  • of PCBs,
  • electronic boards,
  • of MEMS on PCBs,
  • oscillators,
  • …

These products are also particularly suitable for protecting equipment such as: 

  • hard disks, 
  • screens, 
  • resonators, 
  • small video cameras that can be taken on board and used as UAV payloads 

The vibration levels of low-mass shock absorbers can reach +/-1.5 mm with frequency ranges from 10 Hz and loading ranges from a few grams to several kilograms.

Some of them can accommodate substantial displacement in a compact package, so they can also be used for shock attenuation, with an operating temperature range of -55°C to +150°C for silicone versions.

SPECIAL SHOCK ABSORBERS WITH DECOUPLING OR DISPLACEMENT-LIMITING FUNCTION

These special shock absorbers are often made entirely of elastomer, with no metal parts. They are integrated into the attachment points of suspended products and decouple, for example, small items of equipment, electronic cards and components such as accelerometers.

They are characterised by their resonant frequency, their geometry and the different combinations made possible by changes in dimensions or the elastomers used. GAMMA recommends them for reducing vibration levels, modifying natural modes, shifting natural frequencies, or limiting the displacement of a suspended system.

They reduce the transmission of structure-borne noise but do not have a real acoustic function by absorbing sound levels.

These shock absorbers are also used in conjunction with other components to avoid metal-to-metal impacts, mainly at the end of an impact, where they absorb residual energy by acting as stops or damping wedges. When operating temperatures permit, they can be made from elastomer materials with a very high damping coefficient.

To meet its customers’ specific specifications, GAMMA offers rapid prototyping and 3D printing. These shock absorbers can thereforebe customised quickly without excessive tooling costs.

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