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The chain


A. The outer link with pins

B. The inner link with bushes

C. The inner link

D. Rollers

E. Inner plate

F. Outer plate



The above mentioned basic components make up the transmission roller chain. Two are the main parts: links and pins; the bushes and the rollers serve to better the functional characteristics and to reduce friction.

With these components, we can use, in different combinations: attachments - extended pins - special attachments according to the conveyor requested.

On these bases, a chain can have solid pins or hollow pins.

The production of roller chains follows the below mentioned Standards.

  • DIN 8187 (ISO -606) Roller chains (European Series)
  • DIN 8189 (ISO -606) Roller chains (American Series)
  • DIN 8181 (ISO -1275) Roller chains (Long-pitch series)
  • DIN 8189 (ISO -487) Roller chains (Agricultural series)
  • Chains according to Internal Standards

The chain is an ancient mechanical organ, in fact, the ancient Romans already used them on lifting devices for water. With the coming and the diffusion of motorization, chains were improved becoming authentic mechanical organs and their use as transmission lifting and conveying organs started to become considerable.

Evolution of the plants and means on which they are used, imposed their perfectioning to face the increasing requirements concerning resistance, duration and yielding. The Rosa Catene Spa reached these results with the higher quality level of raw materials, precision during production, control of the heat treatments and all the process parameters.