The underbridge crane outfitting allows bridge inspections and maintenance on railway infrastructure.

Electrical, hydrostatic and pneumatic power for movement is supplied directly by the SRT 407 motor trolley.

Software for the outfitting and the motor trolley on which it is mounted can be integrated, allowing the operator in the basket to control the movement of both machines at the same time.

The basket has sockets for electrical, pneumatic and oleodynamic energy that allow the operator to take material samples and carry out small-scale repairs.


A wide range of motion and advanced mobility for inspections, including without stabilisers.


Enables work without stabilisers.


Completely integrated controls allow the operator to control both the crane and the motor trolley.


Excellent weight / performance ratio

Length 6,023 mm
Width 2,434 mm
Weight 5 t
Maximum horizontal jib + 18.0 m / – 11.5 m
Maximum work height + 23.0 m / – 14.0 m
Maximum basket load 280 kg/td>
Slewing angle 450°/td>
Motocarrello - Sottoponte

The underbridge crane outfitting complies fully with UNI EN 14033 Regulations, parts 2 and 3.
It is also compliant with:

    • Directive 2006/42/EC (machinery) and 2004/108/EC (EMC).
    • Harmonised standards EN 12100-1-2, EN 60204-1 and EN 280:2013 (where applicable).<


SRT will commission new rolling stock if a client requests it.

When a vehicle is delivered, a team of specialised technicians will carry out on-site tests to ensure the machine and all its parts work perfectly.

Training can also be provided on correct function and basic maintenance for staff who will use the machine.

SRT offers after-sales assistance on all the vehicles it produces, providing original parts and specialised labour.

A team of skilled technicians, with a fully-equipped mobile workshop, offer rapid, effective service to solve any problem or malfunction.

On request, SRT vehicles can be equipped with a remote monitoring system. This self-powered data transmission system is connected to sensors on the vehicle and monitors the main operating parameters of the machine:

  • position and speed
  • (maximum) braking efficiency
  • component position and number of movements
  • engine conditions
  • operator/driver identification

The advantages and benefits of a remote monitoring system

  • A low-cost way of quickly obtaining information on the state of the vehicle, vital for reducing maintenance time and cost.
  • Knowing the distance the vehicle has travelled, to determine wear and tear on mechanical parts
  • Discovering brake or engine malfunctions
  • Always knowing who is driving the vehicle, to see if there is any correlation between malfunctions and staff conduct
  • Recording machine function parameters to obtain concrete data for future maintenance schedules


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    SRT 407 Motor TrolleyUnderbridge CraneSides and crane

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