Railway

1Floating floor

The problem

At speed, the powertrain and the track send vibration into the coach floor. Passengers feel it underfoot and hear it as a constant hum.

What we fit

All-metal floating-floor mounts under the floor panels, which also take up installation tolerances. On the Frecciarossa 1000 each one weighs 220 g against the 305 g allowed.

Typical choice

Floor shock absorber for high-speed trains20–80 kg · 25–40 Hz

Proven on high-speed trains: Bombardier (2018), floating floor in high-speed trains.

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

2Tables & seats

The problem

At high speed, air resistance makes the coach body vibrate. Seats and tables are fixed to the floor and the walls, so they pass that vibration on to the passengers who sit and lean on them.

What we fit

A small all-metal damper designed for tables and seats, between them and the coach structure: the vibration stops there and the journey is more comfortable.

Typical choice

Damper for train tables and seats

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

3Roof air conditioning

The problem

The air-conditioning unit on the roof runs fans and compressors right above the passengers. Without isolation, its vibration comes down through the roof structure.

What we fit

The same all-metal mounts as the floating floor, sized for the weight of the unit.

Typical choice

Floor shock absorber for high-speed trains20–80 kg · 25–40 Hz

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

4Toilet module

The problem

The toilet module is a heavy, self-contained unit. Fixed rigidly to the floor and walls, it rattles with the coach and the noise carries into the saloon.

What we fit

All-metal oval-base silentblocks that isolate the module at the floor and at the walls: a quieter, more comfortable coach, and pipework protected from vibration.

Typical choice

Oval base metallic silentblock20–50 kg · 40–60 Hz

Proven on high-speed trains: ALSTOM (2013), toilet cabins in high-speed trains.

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

5Doors & fans

The problem

Door drives and fans start, stop and run thousands of times a day. Each cycle sends knocks and vibration into the body shell.

What we fit

Fully metallic suspensions that work in compression and tension, and also in torsion.

Typical choice

Lightweight vibration mount SP52-4972.5–4.5 kg · 15–20 Hz

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

6Floating track slab

The problem

Every train shakes the ground as it passes. The vibration travels through the soil into nearby buildings, where it is felt and heard as a low rumble: a problem for hospitals, laboratories, concert halls and homes next to the line.

What we fit

The track rests on a concrete slab that floats on springs with built-in metal dampers, physically separated from the ground and from the platform. The springs isolate, the dampers stop the slab bouncing, and the vibration stays in the slab instead of reaching the foundations.

Typical choice

SilentRail, railway floating slabAnti-vibration floating slab1–4.5 HzSingle anti-vibration springs5–730 kg · 3–9 Hz

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

7Generator set

The problem

The auxiliary generator set hangs under the floor. Its engine runs for hours and shakes the underframe, and that vibration reaches the whole coach.

What we fit

S402 all-metal mounts, in stainless or painted steel, working in compression and tension: they isolate the generator and hold it if the coach jolts.

Typical choice

Vibration mounts S40230–700 kg · 15–20 Hz

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.

8Bogie joints

The problem

The bogie takes every load from the track. Rubber or greased joints wear out, and the shocks reach the bearings.

What we fit

A patented all-metal flexible joint that works under axial and radial forces and gives the bogie a little elasticity to protect its bearings.

Typical choice

All-metal flexible bush200–1,100 kg · 25–40 Hz

The final choice depends on the load per mount, the speed and the environment. An engineer confirms it with you.