This Male-Female rubber bobbin mount has some unusual features:
  1. It is made using Brass metal components rather than steel, which are highly resistant to environmental degradation
  2. It uses a particularly high grade of natural rubber (military grade), which is better at vibration attenuation than lower grades of rubber - especially with age.  There are other benefits to this rubber too, however they are less relevant for this application.
  3. It is made of a stiffer-than-usual rubber, which enables it to take higher loads than normally seen on a product of this size.

This product is manufactured in the UK and is used in medical applications.  As a result it is also subject to very high quality management standards. 

All dimensions in the drawing are in mm.  M4 thread.

In compression, we would recommend a load range of 2.5 - 9.0 kg per mount for vibration related applications.
In pure shear, we would recommend a maximum load of 1.0 - 4.0 kg per mount for vibration related applications.
We would not recommend using this product in tension.

The grade of rubber and the processes we use on all of our products are designed to give a long life product.  All of our products are geared towards engineering performance rather than cost.

As a guide, vibration performance of the product in compression is expected to be approximately:
  • 25Hz Forcing Frequency:  This mount should not be used at 25Hz as it will, at best, provide little benefit and will probably be counterproductive.
  • 50Hz Forcing Frequency: At a minimum load this mount is not recommended as it will provide little benefit and might be counterproductive.
  • 50Hz Forcing Frequency: At a Max load this mount will provide a good level of isolation: >80%
  • 100Hz Forcing Frequency: At a Min load this mount will provide a good level of isolation: >80%
  • 100Hz Forcing Frequency: At a Max load this mount will provide an excellent level of isolation: >90% 
This mount is used frequency in shock related applications but for notably lower loads than those quoted above.  If your application involves shock, we would recommend contacting us for assistance in ensuring that the correct product was specified.