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the next generation of chains

Evolution of the chain ...

friction welding

(21st century)

hand forging

(18th century)

electric resistance welding

(since 1900)

pewag hero friction welded chain

pewag pushes

past the limits.

A new era of chains

Chains have been produced for decades using the same methodology: cutting steel wire or bar, bending them into the desired link shape and welding them together with energy intensive processes like resistance or flash butt welding.

Forged chain components

The limiting factors of this conventional technology are the  shape of the chain links (round) as well as the weldability of the steel grade, which very much depends upon the carbon content and alloying elements.


pewag hero an innovative friction welded chain goes beyond  these limits and opens the door to a new world of chains.

Melt-free technique

Reduced surface pressure & increased wear volume

  • no grain-growth
  • very small heat-affected zone (near zero residual stresses)
click to enlarge

Clean joining

  • contaminations between the contact surfaces will be carried away by the plasticized working mass, being pressed out during joining of the forged components
  • every chain application has its special demands – the use of forged components can address critical factors like adding wear volume in the interlink section or legs of the link to drastically improve wear life of the chain

No material limits

Reduced surface pressure

Advantages of friction welding

pewag will begin offering friction welded case hardened chains  for conveyor applications in the middle of 2016. pewag hero chains will be available in all conventional dimensions and are designed to fit on the wheels and sprockets of traditional round  steel chains.

No shape limits

  • even conventionally non-weldable steel grades, for example a 50CrV4 steel which offers excellent wear resistance, can be joined
  • The geometry of traditional round steel chains provides a small interlink contact area and subsequent high stresses.
Reduced surface pressure
Geometric shape depending on application. Increased interlink wear volume
  • The load specific geometry of pewag hero chain has increased interlink contact area and more than twice the wear volume of a conventional chain. This leads to significantly reduced contact- and maximum stress, better performance and approximately 30% longer service life. 
Increased wear volume (comparison at 5% chain wear)
click to enlarge

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