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  • ISO 21771:2007

    Current The latest, up-to-date edition.

    Gears — Cylindrical involute gears and gear pairs — Concepts and geometry

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English

    Published date:  28-08-2007

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    ISO 21771:2007 specifies the geometric concepts and parameters for cylindrical gears with involute helicoid tooth flanks. Flank modifications are included. It also covers the concepts and parameters for cylindrical gear pairs with parallel axes and a constant gear ratio, which consist of cylindrical gears according to it. Gear and mating gear in these gear pairs have the same basic rack tooth profile.

    General Product Information - (Show below) - (Hide below)

    Development Note Supersedes ISO/DIS 21771 and ISO TR 4467. (08/2007)
    Document Type Standard
    Publisher International Organization for Standardization
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS EN 61400-4:2013 Wind turbines Design requirements for wind turbine gea
    11/30210938 DC : 0 BS EN 61400-4 - WIND TURBINES - PART 4: DESIGN REQUIREMENTS FOR WIND TURBINE GEARBOXES
    11/30229116 DC : 0 BS ISO 1328-1 - CYLINDRICAL GEARS - ISO SYSTEM OF TOLERANCE CLASSIFICATION - PART 1: DEFINITIONS AND ALLOWABLE VALUES OF DEVIATIONS RELEVANT TO CORRESPONDING FLANKS OF GEAR TEETH
    DIN 3970 E : 2010 MASTER GEARS FOR CHECKING CYLINDRICAL GEARS - GEAR BLANKS AND GEARING
    ISO/TR 10064-1:2017 Code of inspection practice Part 1: Measurement of cylindrical gear tooth flanks
    PD ISO/TR 15144-2:2014 Calculation of micropitting load capacity of cylindrical spur and helical gears Examples of calculation for micropitting
    ISO/TR 6336-30:2017 Calculation of load capacity of spur and helical gears — Part 30: Calculation examples for the application of ISO 6336 parts 1,2,3,5
    VDI 2736 Blatt 1:2016-07 Thermoplastic gear wheels - Materials, material selection, production methods, production tolerances, form design
    I.S. EN 61400-4:2013 WIND TURBINES - PART 4: DESIGN REQUIREMENTS FOR WIND TURBINE GEARBOXES (IEC 61400-4:2012 (EQV))
    BS ISO 1328-1:2013 Cylindrical gears. ISO system of flank tolerance classification Definitions and allowable values of deviations relevant to flanks of gear teeth
    DIN 3970:2010-04 Master gears for checking cylindrical gears - Gear blanks and gearing
    ISO/TR 15144-2:2014 Calculation of micropitting load capacity of cylindrical spur and helical gears Part 2: Examples of calculation for micropitting
    ISO 1328-1:2013 Cylindrical gears — ISO system of flank tolerance classification — Part 1: Definitions and allowable values of deviations relevant to flanks of gear teeth
    PD ISO/TR 10064-1:2017 Code of inspection practice Measurement of cylindrical gear tooth flanks
    PD ISO/TR 6336-30:2017 Calculation of load capacity of spur and helical gears Part 30: Calculation examples for the application of ISO 6336 parts 1,2,3,5
    UNE-EN 61400-4:2013 Wind turbines - Part 4: Design requirements for wind turbine gearboxes
    PD ISO/TR 15144-1:2014 Calculation of micropitting load capacity of cylindrical spur and helical gears Introduction and basic principles
    ISO/TR 15144-1:2014 Calculation of micropitting load capacity of cylindrical spur and helical gears Part 1: Introduction and basic principles
    EN 61400-4:2013 Wind turbines - Part 4: Design requirements for wind turbine gearboxes

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 1328-2:1997 Cylindrical gears ISO system of accuracy Part 2: Definitions and allowable values of deviations relevant to radial composite deviations and runout information
    ISO 701:1998 International gear notation Symbols for geometrical data
    DIN 867:1986-02 BASIC RACK FOR INVOLUTE TEETH OF CYLINDRICAL GEARS FOR GENERAL ENGINEERING AND HEAVY ENGINEERING
    ISO 1328-1:2013 Cylindrical gears — ISO system of flank tolerance classification — Part 1: Definitions and allowable values of deviations relevant to flanks of gear teeth
    ISO/TR 10064-3:1996 Code of inspection practice Part 3: Recommendations relative to gear blanks, shaft centre distance and parallelism of axes
    ISO/TR 10064-2:1996 Code of inspection practice Part 2: Inspection related to radial composite deviations, runout, tooth thickness and backlash
    AGMA 2002 : B TOOTH THICKNESS AND BACKLASH MEASUREMENT OF CYLINDRICAL INVOLUTE GEARING
    ISO 53:1998 Cylindrical gears for general and heavy engineering Standard basic rack tooth profile
    ISO 54:1996 Cylindrical gears for general engineering and for heavy engineering — Modules
    ISO/TR 10064-1:2017 Code of inspection practice Part 1: Measurement of cylindrical gear tooth flanks
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