ISO-1328-2 Cylindrical gears - ISO system of accuracy - Part 2: Definitions and allowable values of deviations relevant to radial composite deviations and runout information

ISO-1328-2 - 1997 EDITION - CURRENT


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This part of ISO 1328 establishes a system of accuracy relevant to radial composite deviations of individual cylindrical involute gears. It specifies the appropriate definitions of gear tooth accuracy terms, the structure of the gear accuracy system and the allowable values of the above mentioned deviations.

The radial measurement accuracy system has different grade ranges than elemental ranges in ISO 1328-1. The diameter and module ranges for radial composite deviations and runout are also different.

The radial composite accuracy system comprises 9 accuracy grades for F″i or f″i of which grade 4 is the highest and grade 12 is the lowest. The module range extends from 0,2 mm to 10 mm and the diameter range from 50 mm to 1000 mm, see clauses 6 and 7. Annex A gives tables based on the formulae in clause 7.

Runout is defined in annex B and values are not given in the standard for determining accuracy grade 5. Annex B provides information on runout for use if agreed upon between purchaser and manufacturer.

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Document Number

ISO 1328-2:1997

Revision Level

1997 EDITION

Status

Current

Publication Date

Aug. 1, 1997

Committee Number

ISO TC 60/WG 2