---
title: "HST - Suspension"
canonical: "/hst-suspension"
published: 2026-10-12
---

# HST - Suspension

## Frame

## Frame

**Rail**

**HST**

**Suspension**

## Frame

### Primary

###### SUSPENSION

##### Primary Suspension

##### Adapted to LRVs, Trams, Metros,
Regional & Intercity trains

##### Provides vertical suspension and damping to the bogie and also guides the axle in longitudinal and lateral directions.

They also ensure homogeneous distribution of loads on the wheels, which is crucial to ensure brake and traction performance and to avoid the risk of derailment

**Customer benefits**

### Secondary

###### FRICTION

##### SecondarySuspension

##### Adapted to LRVs, Trams, Metros, Regional, Intercity & High-Speed trains

##### Its function is to connect the bogie with the car body to ensure passenger
comfort.

It is responsible for train stability in curves and during starting and braking.

It must ensure high flexibility in all directions.

It is composed of a rubber below, an emergency spring, a sliding plate and the top and bottom metal parts.

**Customer benefits**

### Motor and gearbox

###### FRICTION

##### Motor and Gearbox

##### Content in Development

##### Coming soon to help you explore Wabtec solutions and expertise

**Primary suspension**

**Secondary suspension**

**Motor and gearbox suspension**

## Frame