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Own development

Kampa Sleeper

Hollow steel sleeper that routes track-crossing cables through the bearer. No cable ducts, no tamping damage.

Cable ducts for track-crossing cables always sit between two sleepers, exactly where the tamping machine needs to work. The track around them cannot be tamped properly, and the duct itself is at real risk of being damaged in the process.

The Kampa Sleeper takes the duct out of the track altogether. It is a hollow steel sleeper: the cables run through the bearer itself, the ballast bed stays clear, and the track can be tamped normally.

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Cable pass-through detail of the Kampa Sleeper hollow steel sleeper

In the field

The Kampa Sleeper installed in ballasted track, cables routed into a conduit, crew in the background
The Kampa Sleeper in the track during renewal works.
Cables leaving the hollow Kampa Sleeper into a flexible cable conduit on the ballast
Track-crossing cables leave the hollow bearer and run on through the cable duct.
Top-down view of the Kampa Sleeper crossing the track between the rails
Top view: the bearer crosses the track with the cables inside, the ballast bed clear around it.
Close-up of the cable pass-through end of the Kampa Sleeper with a cable-present marker plate
A 'cable present' (Kabel aanwezig) plate marks the cable pass-through.
Cables being pulled through three hollow steel Kampa Sleepers, with coils of cable on the ballast
The track-crossing cables are pulled through the hollow bearers.
Cable ducts between the sleepers in a station area, with sleepers marked in yellow
Today's practice: cable ducts between the sleepers. They are removed; Kampa Sleepers take the place of the sleepers marked in yellow.

Documentation & links

Manuals, brochures and where to order.

Kampa Sleeper brochure PDF · English Kampa Sleeper PTH-brochure PDF · Nederlands
Cable pass-through detail of the Kampa Sleeper hollow steel sleeper

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