1. Different chain types

1.1 Roller chains

Roller chains are made up of a succession of two different types of links arranged alternately (figure 1 ): inner links and outer links.

The inner links are made up of two inner plates of steel, treated or untreated, into which are inserted two tubular parts called bushes, generally made of case-hardened steel.

Depending on the application, there are several variants:
- in the most general case, the bushes receive another freely rotating tubular part called a roller, hence the name given to this family of chains;
- when the roller has...

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Different chain types

(1) - BINDER (R.C.) - Mechanics of the roller chain drive (Mécanique de la transmission par chaîne à rouleaux), - (USA), 196 p., Prentice- Hall (1956).
(2) - SCALES (J.J.) - What do roller chain ratings mean ? (Que signifient les taux de puissance des chaînes...

Since 1989, a great deal of work has been carried out on power transmission standards with a dual focus:

a desire to extend ISO international standardization to all countries. ISO Technical Committee 100 seeks a compromise acceptable to all. As a result, France is gradually replacing its national mechanical chain standards with international standards: