ISO 15312:2018
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Roulements — Vitesse de référence thermique — Calculs
| Published By | Publication Date | Number of Pages |
| ISO | 2018-02 | 20 |
ISO 15312:2018 définit la vitesse de référence thermique pour les roulements lubrifiés par bain d'huile et établit les principes de calcul pour la détermination de ce paramètre. Le paramètre déterminé conformément au présent document s'applique aux roulements des séries et tailles données dans la conception normalisée ou dans une conception qui, du point de vue du frottement, peut être reliée à un roulement de conception normalisée.
Dans la plupart des cas d'assemblages normalisés, la température admissible détermine la vitesse maximale de fonctionnement. L'échauffement de l'assemblage est ensuite produit par le roulement.
Les butées à billes ne font pas l'objet du présent document car les effets cinématiques ne permettent pas d'appliquer la vitesse de référence thermique définie dans le présent document.
NOTE 1 Dans l'Annexe A, des valeurs moyennes des facteurs de correction f0r et f1r sont données ? f0r pour calculer la perte visqueuse des roulements lubrifiés par bain d'huile et f1r pour calculer la perte par frottement des roulements.
NOTE 2 Des notes explicatives sur le critère de limitation sont présentées à l'Annexe B.
NOTE 3 Dans l'Annexe C, les conditions de référence pour la lubrification à la graisse sont définies. Les conditions de référence sont choisies de façon que la vitesse de référence thermique en cas de lubrification à la graisse soit identique à celle pour la lubrification par bain d'huile.
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