The result counts

When it comes to tamping the ballast bed, our aim is efficiency and sustainability. Homogenous compaction is not enough. Our aim is to compact the track ballast as much as possible, thereby ensuring a stable track geometry, anticipating settlements, and maintaining the target geometry in the long term. On top of it all, we offer the Dynamic Track Stabiliser: it anticipates initial settlements in a controlled manner, with spatial compaction making the track geometry last longer.

Combined with Dynamic Overlifting, we target the “track’s memory” to prevent faults from reoccurring.


Split Head technology

Split Head tamping units for work on tracks, turnouts, and crossings are tamping units divided in longitudinal direction of the machine. Each of the two work unit halves can be lowered and put into action separately from the other. Additionally, both work unit halves, depending on the design, can be laterally displaced together or individually.
For operation on sections of plain track the two halves are locked together to form a tamping unit for tracks.


Lifting and lining unit

On the basis of many years of experience, Plasser & Theurer has developed various lifting and lining units which fulfil both requirements and are well suited for specific operating conditions. 


This work unit is fitted with two lining rollers and two roller lifting clamps per rail, gripping the rail under the rail head. They lift and line in one operation.


This work unit has lifting hooks and lining rollers. On request, it is possible to mount additional roller lifting clamps. Lifting and lining is performed in one operation. The lifting hooks can be applied either under the rail head or under the rail base. The entire work unit can also be displaced in longitudinal direction. This ensures that the work unit can be adapted to every situation during turnout maintenance, achieving an optimum lifting and lining process.


The key to fault correction

The standard equipment for all of our tamping machines comprises measuring systems for correcting track geometry faults in longitudinal level, crosslevel, and longitudinal alignment: the proportional parallel levelling system and the single-chord lining measuring system.


Combined levelling and alignment laser

During track tamping, the combined levelling and alignment laser guides the tamping machine according to the precision method. Using this method, the laser beam is displayed on the laser receiver camera (at the tamping machine) and analysed according to its position.
The combined levelling and alignment laser also allows producing a particularly accurate turnout geometry. In doing so, the ideal geometric position of the turnout (in the through rail) is recorded along the laser reference line.


Tamping tine and ballast: teaming up

Thanks to a brand new measuring and analysis method, it is now possible for the first time to observe the movement behaviour of ballast throughout the entire tamping process. In addition, the method provides an unprecedented level of detailed insight into the ballast condition. 

High capacityPrecisionSustainability

Advantages of multi-sleeper tamping

However, continuously working MULTI-sleeper tamping machines show their full potential not only in short track possessions during maintenance tamping. Machines in the X series also offer advantages when laying new track, for example, following extensive track rehabilitation. They are designed for high lifting and lining forces. As lifts take place in multiple work stages, this also means the machine’s increased output allows you to complete construction noticeably faster.

For quality reasons: MULTI-sleeper tamping units provide more uniform working action, which translates into higher maintenance quality. Owing to a longer frame, bending stress of the rails decreases. And the subframe bogie that fixes it in place prevents elastic rebound of the track after tamping, lining, and lifting.

up to
sleepers tamped in a single operation
High capacityPrecisionReliability

In 110 countries

You can choose from a complete range of tamping units for all track and turnout maintenance applications, classified according to output and performance requirements. They are available in various designs and sizes: the perfect fit for all our tamping machines.


Tamping track with irregular sleeper spacing

Plasser & Theurer’s proven tamping technology can be used under almost all operating conditions. Sometimes there are sections of track with irregular, heterogeneous sleeper positioning. That is why Plasser & Theurer offers customised tamping units for different types of superstructure. Thanks to these special models with additional adjustment mechanisms, there is nothing you can’t handle.

High capacityPrecisionSustainability

4-rail tamping

This mode uses four tamping unit segments. The outer segments can be slewed out far enough that the long bearers of the diverging rail in the turnout can also be tamped. This is an ideal supplement to automated synchronous 3-rail lifting. Positioned on transverse guide columns, the inner tamping units can be displaced laterally. This enables them to be operated in the area inside and outside the respective rails. All four tamping units can be turned and thus adapted to the slanting position of the sleepers.


Synchronous 3-rail lifting unit for turnouts

For turnout tamping in the area of the long bearers, we offer an automatic, synchronous 3-rail lifting unit for the diverging rail. Using the lifting and lining unit, the track is raised synchronously. The length of the telescopic arm adapts automatically to the course of the rails as the machine moves forward. Particularly on heavy superstructures, the stresses on rail fastenings, rails, and sleepers are within the permissible range at all times. Equipping the work unit with a slewing limitation prevents infringement of the adjacent track clearance gauge during work.


Plasser Datamatic – MachineConditionObserver
Controlling operation and servicing digitally

Fleet and maintenance managers can access information on the condition of their machines at any time, allowing for condition-based maintenance and enabling them to plan required measures ahead of time. 
The exact machine position can be accessed at any time, facilitating operations planning and refuelling. The management receives informative reports, providing the basis for strategic decisions.

High capacityPrecisionDigitisationErgonomics

PlasserSmartTamping – The Assistant

The digital future of turnout tamping has begun. “PlasserSmartTamping - The Assistant” is a turnout tamping assistance system that has revolutionised automation in tamping machines. It simplifies tamping in turnouts and crossings, with no extra measuring run needed. Particularly in times where there is a dearth of experienced staff, the system gives infrastructure operators security.
70 years of experience in tamping technology feed into the digital tamping assistant.


The tamping simulator – High level of expertise within a short time

Practical training in a new dimension – the 09-3D tamping simulator
Our tamping simulators demonstrate the convincing advantages of modern simulation technology.



The standard in user-friendliness and process reliability: the track-geometry guiding computer provides ultimate operating comfort. Equipped with the SmartALC, tamping machines can work according to the precision method or the compensation method. Operators can select one of four pre-defined user profiles provided by the SmartALC to ensure their needs are met perfectly. Using AutoSync, for example, the machine automatically detects track defects.