NF ISO 1275
Double-pitch precision roller chains, attachments and associated chain sprockets for transmission and conveyors
ISO 1275.2006 specifies requirements for double-pitch precision roller chains suitable for the mechanical transmission of power and for conveyors, together with those for their associated sprockets. It covers dimensions, tolerances, length measurement, preloading and minimum tensile strengths. These double-pitch chains have been derived from some of the short-pitch transmission precision roller chains covered by ISO 606 having certain common dimensions but of double the pitch. The chains are intended for use under less onerous conditions with respect to speed and power transmitted than are the base chains from which they are derived. ISO 1275.2006 primarily applies to sprockets with 5 to 75 teeth inclusive (with intermediate numbers of teeth 5 and a half to 74 and a half inclusive). The preferred numbers of teeth are 7, 9, 10, 11, 13, 19, 27, 38 and 57.
ISO 1275.2006 specifies requirements for double-pitch precision roller chains suitable for the mechanical transmission of power and for conveyors, together with those for their associated sprockets. It covers dimensions, tolerances, length measurement, preloading and minimum tensile strengths.
These double-pitch chains have been derived from some of the short-pitch transmission precision roller chains covered by ISO 606 having certain common dimensions but of double the pitch.
The chains are intended for use under less onerous conditions with respect to speed and power transmitted than are the base chains from which they are derived.
ISO 1275.2006 primarily applies to sprockets with 5 to 75 teeth inclusive (with intermediate numbers of teeth 5 and a half to 74 and a half inclusive).
The preferred numbers of teeth are 7, 9, 10, 11, 13, 19, 27, 38 and 57.
- Avant-proposiv
- Introductionv
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1 Domaine d'application1
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2 Références normatives1
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3 Chaînes de transmission1
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3.1 Nomenclature des chaînes et éléments de chaîne1
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3.2 Désignation4
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3.3 Dimensions4
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3.4 Essai de traction4
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3.5 Précharge4
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3.6 Validation de la longueur6
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3.7 Marquage6
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4 Chaînes de manutention8
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4.1 Généralités8
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4.2 Nomenclature8
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4.3 Désignation8
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4.4 Dimensions8
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4.5 Validation de la longueur8
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4.6 Marquage8
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4.7 Plaques-attaches10
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5 Pignons dentés pour chaînes14
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5.1 Nomenclature14
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5.2 Dimensions diamétrales et forme de denture15
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5.3 Battement radial (faux rond)19
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5.4 Battement axial (voile)19
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5.5 Exactitude de taillage des dents19
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5.6 Tolérance d'alésage19
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5.7 Marquage20
- Annexe A (normative) Diamètres primitifs21
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