Machinery & Plant Sourcing · Concrete Sleeper Plants

Carrousel concrete sleeper production plant

A carrousel plant moves sleeper moulds through fixed stations for cleaning, tensioning, concreting, curing and demoulding. It suits high-volume prestressed sleeper production, and different sleeper types can run on the same line.

Production method: Carrousel, moving moulds
Sleepers per mould: 4 (typical)
Designed to: EN, AREMA, GOST
Prestressing: Pre-tensioned threaded bars
Capacity: Defined per project

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Matched to your specification. Offers from suitable Turkish manufacturers, compared side by side.

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Secure payment. Advance payment or letter of credit, set out in the contract.

How a carrousel plant works

In a carrousel plant the moulds travel and the workstations stay in place. Sleeper moulds circulate on conveyors through a fixed sequence: mould cleaning and oiling, placing and tensioning the prestressing bars, concreting and vibration, curing in a heated chamber, de-tensioning, and finally lifting and turning the mould to release the finished sleepers.

Each mould typically holds four sleepers. Prestressing bars with threaded ends are anchored at one end with a tie bolt spindle and tensioned at the other with a tensioning spindle, then locked with nuts that bear on the mould. Ribbed or profiled bars give a firm bond between steel and concrete and a good transfer of force.

Why buyers choose a carrousel line

Flexibility. Several sleeper types and sizes can be produced with different moulds, even within the same shift.
Short bars, easy traceability. Prestressing bars are around 2.6 m long, far easier to handle and trace than the long strands of a long-line bed.
Compact footprint. The line fits in a shorter hall than a long-line plant.
No saw cutting. Sleepers are cast individually, so there is no cutting dust or wastewater to treat.
Consistent quality. A high degree of automation keeps dimensions and strength uniform.

Built to your sleeper design

Sleeper designs differ by country and use. Moulds are designed in 3D from the sleeper drawing you supply and to the applicable standard, such as EN, GOST or AREMA.

Production process

From empty mould to finished sleeper

Step 01

Mould cleaning and oiling

Returning moulds are cleaned and coated with release agent.

Step 02

Bar placement and tensioning

Prestressing bars are placed and tensioned at the tensioning station, one cavity at a time.

Step 03

Concreting and vibration

Concrete is placed and the mould passes a vibration station for full compaction.

Step 04

Curing

Moulds move into curing chambers, where heat shortens the hardening time.

Step 05

De-tensioning

When the concrete reaches the required strength, the bars are released and the force transfers into the sleeper.

Step 06

Demoulding and stacking

The mould is lifted and turned over to release the sleepers, which are then checked and stacked.

Key components

Main machines and systems

Sleeper moulds

Steel moulds designed from your sleeper drawing and standard. Two to four sleepers per mould are possible; four is typical.

Sleepers per mould: 4 (typical)
Standards: EN, AREMA, GOST

Automatic positioning and tensioning station

Tensioning machine and station

Tensions the bars through the tie rods at the required force, one cavity at a time, with four tensioning cylinders working together. The force is set to the applicable standard.

Stressing force: max. 460 kN at 370 bar
Stressing stroke: 80 mm
Pump unit: 8.4 l/min, 5.5 kW, PLC

Mould transfer conveyors

Roller conveyors, 90 degree rotary roller conveyors and movable rotary conveyors move moulds automatically or semi-automatically between stations.

Drive power: 2.2 kW
Drive speed: 0 to 0.4 m/s, variable

Hydraulic transfer systems

Hydraulic lifting and moving conveyors take moulds out of the curing chambers to the relaxing station step by step, lifting moulds or traverses with hydraulic pistons.

Technical data

Specifications

Typical values from manufacturer documentation. Final figures are confirmed in the manufacturer's offer for your project.

Mould width	1,500 mm
Sleepers per mould	4
Manipulator lifting capacity	6,000 kg
Longitudinal travel	50,500 mm
Transversal travel	4,000 mm
Lifting height	4,000 mm
Positioning accuracy	±1.5 mm
Travel speed, longitudinal	0 to 1.0 m/s
Travel speed, transversal	0 to 0.3 m/s
Lifting speed	0 to 0.5 m/s
Lifting power	30 kW
Drive motors	2 × 5.5 kW
Tensioning force	max. 460 kN at 370 bar
Conveyor drive	2.2 kW, 0 to 0.4 m/s

Example values from one manufacturer configuration (mould handling manipulator, tensioning and conveyor units). Plant capacity and layout are defined for each project.

Who it's for

Built for these buyers

Precast producers

Companies adding railway sleepers to their product range.

Rail infrastructure contractors

Contractors setting up local sleeper production for a corridor project.

Railway project owners

Owners and their contractors who need sleepers produced close to the line.

Existing sleeper plants

Producers moving from long-line to a more automated, flexible line.

FAQ

Questions buyers ask

Carrousel or long-line: which one do I need?

A carrousel line suits high volumes, several sleeper types and a shorter hall. A long-line plant needs a longer hall and more manual work, and often suits smaller operations with uniform products and a lower investment. Our guide compares both in detail.

Can the plant produce our sleeper design?

Moulds are designed from the sleeper drawing you supply and to the applicable standard, such as EN, AREMA or GOST. Send the drawing with your RFQ.

How is payment secured?

Payment terms are set in the contract with the manufacturer, typically an advance payment or a letter of credit.

Who installs the plant?

Installation and commissioning are carried out by the manufacturer. VDA coordinates the schedule between you and the manufacturer.

How are lead times confirmed?

Production and delivery times depend on the plant scope and the manufacturer's schedule. They are stated in the offer and fixed in the contract.