Products

Compacting Dies for Cables and Wire Ropes

Compacting dies (also called compression dies) compact stranded cables and wire ropes: the die presses the strand into a denser, smoother cross-section. Precise geometry determines the quality of the finished cable; a high surface finish reduces friction and extends tool life. Fritz Leng supplies compacting dies in tungsten carbide and ceramic grades, with coatings such as TiC/TiN, DLC or diamond, and also in split design.

What do compacting dies do?

In stranding and rope-making lines, individual wires are laid into strands and ropes. A compacting die compresses this composite: voids between the wires shrink, the cross-section becomes denser and rounder, the surface smoother. The optimum die geometry ensures the quality of the cable being produced — diameter, roundness and surface all depend on it.

Which designs and coatings does Leng supply?

We manufacture compacting dies in tungsten carbide and ceramic grades. Where friction and wear demand it, coatings are available: TiC/TiN, DLC and diamond coating. For applications where the die must be opened around the running product — for example on stranding machines — we also manufacture split compacting dies. Every die is made to order; geometry and material grade are matched to strand construction, lay-up and machine.

How does your inquiry proceed?

Send us your drawing (PDF, DXF or STEP) or the application data: strand construction, material, diameters before and after compacting. We design the geometry, propose carbide grade and coating, and manufacture in-house at Herborn-Schönbach — grinding, polishing and measuring included. Inspection reports are available on request; our stock of blanks enables delivery within 24 hours when necessary.

Request a quote — upload your drawing or send application data. Direct line: +49 2777 7608.

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Frequently asked questions

Compacting die or compression die — is there a difference?

No — both terms describe the same tool. In stranding practice, "compacting die" is the more common term; "compression die" appears mainly in older literature and some regional usage.

When is a split compacting die the right choice?

A split die can be opened around the running product. That matters wherever the strand cannot be threaded through a closed die — for instance when changing dies on a loaded stranding line. We manufacture split versions as standard; the choice depends on your machine and process.

Which coating extends tool life the most?

That depends on strand material, speed and lubrication. TiC/TiN, DLC and diamond coatings each reduce friction and wear in different regimes — we recommend the coating during design, based on your application data.