Why Silentflex

When a standard solution is not enough

A catalogue mount works for many machines. But a train at 300 km/h, a nuclear power plant or a data centre in a seismic zone need more: engineering, testing and a manufacturer that stands behind what it designs.

Get help choosing Projects that prove it

Expected service life

Standard rubber5–6 years

All-metal SilentflexMore than 25 years

Standard rubber versus all-metal Silentflex

What changes for critical equipment over its service life.

Standard rubber solution100% metal Silentflex

In a fireBurns and gives off gasesNon-flammable, no toxic gases

When overloadedBreaksBecomes a stiffer isolator: never fails completely

Load rangeNarrow, around the rated loadWide: one design for equipment of different weights

MaintenancePeriodic replacementNo maintenance or replacement

EarthquakesNo seismic testTested in X, Y and Z: GR-63-CORE zone 4 and IEEE 344

Why Silentflex

What is behind every anti-vibration mount

In-house manufacturing
We design and make rubber-metal and all-metal anti-vibration mounts, standard and custom, in Astillero (Cantabria, Spain), under ISO 9001 and with a two-year warranty.
In-house laboratory
We test every product line in our own laboratory, and qualify it at accredited laboratories when the project requires it.
Our own patents
Floating slab with an international patent (PCT/ES2008/000469, US 13/463,320), seismic plinth (PCT/ES2018/070304) and a flexible bush patented in Eurasia. Trade mark registered in the EU, the US and China.
Accredited tests
Telcordia GR-63-CORE zone 4 seismic qualification and the IEEE 344 nuclear standard, 10 t impact tests and a fatigue life of 10 million cycles.
International track record
Projects in 11 countries for Hitachi Rail, Endesa, Repsol, Telefónica, the EUIPO, the ALBA Synchrotron and nuclear power plants such as Chernobyl and Krško.
Built for the extreme
100% metal solutions for where rubber fails: heat, cold, oil, fire, impacts and earthquakes. They do not burn, do not age and, if overloaded, never fail completely.

How we work

1
We listen
You tell us about the equipment, the environment and the problem. If needed, we measure.
2
We calculate and simulate
Frequencies, loads and displacements; in complex cases, dynamic simulation before the first prototype.
3
We manufacture
At our plant in Astillero, with standard parts or parts designed for your project.
4
We test
In our laboratory and, when the project calls for it, at accredited laboratories.
5
We stand behind it
A two-year warranty and, for the floating slab, a results guarantee: if it does not reduce noise and vibration, we refund your money.

Projects that prove it

See all case studies

Krško nuclear power plant · Krško, Slovenia

The challenge

Equipment that must keep working after an earthquake

The solution

The plinth for rooms without a raised floor

The test

On the shaking table, with the servers running

OBE and SSE

Ten operating-basis earthquakes and two safe-shutdown earthquakes

The result

Not a single anomaly

Chernobyl nuclear power plant · Chernobyl, Ukraine

26 April 1986

The night that changed nuclear power

2016

A steel arch over the reactor

The challenge

The power that cannot be cut

2018 · The solution

A special metal plinth for the critical UPS

Why it matters

The same technology, tested for nuclear power plants

Hitachi Rail · Italy

The challenge

Comfort at 300 km/h, inside a weight budget

The solution

100% metal dampers under the floating floor

The result

220 g instead of 305 g, on every damper

Castelldefels Theatre-Auditorium · Castelldefels, Spain

The challenge

A theatre next to a railway station

The idea

A building inside another

The solution

2,340 tonnes on coaxial springs

The result

“It has great acoustics”

Universitat Rovira i Virgili (URV) · Tarragona, Spain

The challenge

Nanometre imaging in a building that moves

The solution

8 metal containers, cast into the slab

The result

2 Hz, confirmed in simulation

Engineering team

Engineers at your side, from the first call to commissioning

We study the problem, design the solution, make it and test it. You talk directly to the people who design it.

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Vibration and seismic
More than 35 years in vibration control, shock and seismic protection.
Calculation and simulation
Frequencies, loads and multibody dynamics, before the first prototype.
In-house laboratory
We test every product and, when the project requires it, qualify it at accredited laboratories.
In-house manufacturing
Standard and custom, in Astillero (Cantabria, Spain), under ISO 9001.