5. Sprockets and wheels
We've mentioned sprockets several times in the preceding paragraphs: they can't be dissociated either from the chain's operation, which owes its complex kinematics to them, or from the chain's longevity, which depends very much on the care taken in their design and manufacture.
Let's take a closer look at the descriptive and normative aspects of sprockets and wheels in isolation.
5.1 Different types
The term "pinion" is generally used when the number of teeth is less than 25 or 30, and "wheel" for higher numbers of teeth.
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Manufacturers offer different hub shapes (figure 45...
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Sprockets and wheels
Installation, lubrication and maintenance
References
Standardization
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:
- Chaînes...
Organizations
CETIM Centre d'Études Techniques des Industries Mécaniques
EUROTRANS Comité Européen des Associations de Constructeurs d'Engrenages et d'Éléments de Transmissions
UNM Union de Normalisation de la Mécanique
UNITRAM Union Nationale des Industries de Transmissions Mécaniques
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