Single-axle CFD bogie for the light trains range

Single-axle CFD bogie for the light trains range

Single-axle bogie with 2 suspension stages

One axle, two wheels and two suspension stages, that's what our single-axle bogie offers. This assembly makes it possible to reconcile comfort and lightness, essential to obtain a light, efficient and economical railcar. The bogie axle can be driven or carrier and is suitable for diesel-hydraulic or electric/diesel-electric traction systems.

Design

The bogie is equipped with axle boxes having a suspension stage with coil springs and hydraulic shock absorbers which are connected to an intermediate frame acting as bogie frame. At one end of this structure, a link made up of elastic articulated arms and connecting rods ensures angular clearance between the bogie and the vehicle body as well as transverse movements. A pneumatic secondary suspension stage located beyond the axle absorbs these angular and lateral movements to dampen the movements between the body and the bogie that are detrimental to passenger comfort. Dampers are installed at the level of the secondary air suspension to limit vertical movements. The linkage by arms and connecting rods on its side guarantees a positioning of the axle perpendicular to the track.

View of the single-axle CFD bogie
View of the single-axle CFD bogie

Dynamic behaviour

The primary suspension consisting of coil springs and hydraulic shock absorbers improves dynamic behaviour and reduces maintenance costs. The secondary stage with its integrated shock absorber system absorbs vertical movements, ensuring great comfort for passengers by limiting parasitic movements between the body and the bogie, which are often uncomfortable on degraded tracks.

The braking system is installed on the bogie and provides braking force on the tread in the case of tread brake unit or brake discs calipers (optional). Depending on the chosen application, the bogie can be equipped with a drive axle or a direct mounting of an electric traction motor and its gearbox.

Single-axle bogie perspective

Single-axle bogie perspective

Front view of single-axle bogie

Front view of single-axle bogie

Side view of the single-axle bogie

Side view of the single-axle bogie

Application

Light railcars.

  • light
  • excellent dynamic behaviour
  • economic
General information
Track gauge in mm1000/1067/1435/1520/1668
Bogie mass from 3 to 4 t depending on equipment t
Max axle load 15 t
Type of transmissionMechanical or electrical
Maximum speed 100 km/h
General information

EQUIPMENT

SPEED SENSORS
standard (option SIL 2)
REDUCED BRIDGE
axial or transverse, single or double stage
COIL LUBRICATOR
optional
SABLIERES
optional
The list of equipment is not exhaustive. Other information is available on request
Diagram single-axle bogie type CFD
Diagram single-axle bogie type CFD
To know more about it

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