![Τα αντικραδασμικά ελατήρια RG+ FR-E4-34-[] χρησιμοποιούνται για την έδραση δονούμενων μηχανών πολύ μεγάλου βάρους με στρεφόμενα μέρη ταχύτητας >400rpm.](https://shop.groupscience.gr/_w/wp-content/uploads/2020/10/fr-e4-342.png)
![RG+ FR-E4-34-[]](https://shop.groupscience.gr/_w/wp-content/uploads/2020/10/fr-e4-341.png)
Description
FR-E4-34-[ ] isolators are used for resilient suspension of very heavy rotating machines with rotational speed of >400 rpm, i.e ventilators, motors, blowers, pumps, air conditioner, test stands, compressors, scales etc.
Natural frequency of the isolator is 3-4Hz. Depending on the loading it provides maximum possible vibration reduction.
It is supplied in 6 types depending on the maximum loading:
| Type | Load |
| FR-E4-34-400 | 280-400daN (kg) |
| FR-E4-34-520 | 360-520daN (kg) |
| FR-E4-34-640 | 440-640daN (kg) |
| FR-E4-34-920 | 640-920daN (kg) |
| FR-E4-34-1240 | 880-1240daN (kg) |
| FR-E4-34-1640 | 1200-1640daN (kg) |
This post is also available in:
![RG+ GDZ-[]-1](https://shop.groupscience.gr/_w/wp-content/uploads/2020/10/GDZ_A2-80x80.png)
![RG+ GDZ-[]-4](https://shop.groupscience.gr/_w/wp-content/uploads/2020/10/GDZ-42-80x80.png)