2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 53:1998, Cylindrical gears for general and heavy engineering — Standard basic rack tooth profileISO 1122-1:1998, Vocabulary of gear terms — Part 1: Definitions related to geometryISO 1328- 1:1995, Cylindrical gears — ISO system of accuracy — Part 1: Definitions and allowable values of deviations relevant to corresponding flanks of gear teethISO 4287:1997, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Terms, definitions and surface texture parametersISO 4288:1996, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Rules and procedures for the assessment of surface textureISO 6336-2, Calculation of load capacity of spur and helical gears — Part 2: Calculation of surface durability (pitting)ISO 6336-3, Calculation of load capacity of spur and helical gears — Part 3: Calculation of tooth bending strengthISO 6336-5, Calculation of load capacity of spur and helical gears — Part 5: Strength and quality of materialsISO 6336-6, Calculation of load capacity of spur and helical gears — Part 6: Calculation of service life under variable load