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Overview ISO 21771:2007 - Gears: Cylindrical involute gears and gear pairs - Concepts and geometry defines the geometric concepts, symbols and calculation methods for cylindrical involute gears and g…
Overview ISO 21771-1:2024 - Cylindrical involute gears and gear pairs - Part 1: Concepts and geometry defines the geometric concepts, terminology and parameters for cylindrical gears with involute he…
Overview ISO 2177:2003 defines a coulometric method by anodic dissolution for measuring the thickness of metallic coatings. The method is applicable only to conductive coatings and can be used on sin…
Overview ISO 21773:2021 - Methods of test and characterization of performance for energy recovery components - defines standardized laboratory methods to test and characterize air-to-air heat/energy…
Overview ISO 21771-2:2025, "Cylindrical involute gears and gear pairs - Part 2: Calculation and measurement of tooth thickness and backlash," establishes calculation procedures and measurement relati…
1 Scope This International Standard specifies the geometric concepts and parameters for cylindrical gears with involute helicoid tooth flanks. Flank modifications are included. It also covers the con…