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22/30402448 DC BS ISO 10300-3. Calculation of load capacity of bevel gears - Part 3. Calculation of tooth root strength, 2022
- ISO_DIS 10300-3 ed.3 - id.79403 Enquiry PDF (en).pdf [Go to Page]
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Symbols and abbreviated terms
- 5 General rating procedure
- 6 Gear tooth rating formulae€—€Method€B1 [Go to Page]
- 6.1 Tooth root stress formula
- 6.2 Permissible tooth root stress
- 6.3 Calculated safety factor
- 6.4 Tooth root stress factors [Go to Page]
- 6.4.1 Tooth form factor, YFa
- 6.4.2 Stress correction factor for load at tooth tip, YSa
- 6.4.3 Contact ratio factor, Yε
- 6.4.4 Bevel spiral angle factor, YBS
- 6.4.5 Load sharing factor, YLS
- 6.5 Permissible tooth root stress factors [Go to Page]
- 6.5.1 Relative surface condition factor, YR,relT-B1
- 6.5.2 Relative notch sensitivity factor, Yδ,relT-B1
- 7 Gear tooth rating formulae€— Method€B2 [Go to Page]
- 7.1 Tooth root stress formula
- 7.2 Permissible tooth root stress
- 7.3 Calculated safety factor
- 7.4 Tooth root stress factors [Go to Page]
- 7.4.1 General
- 7.4.2 Stress parabola according to Lewis
- 7.4.3 Basic formula of geometry factor, YJ
- 7.4.4 Geometry factor, YJ, for bevel gears (for hypoid gears, see 7.4.5)
- 7.4.5 Geometry factor, YJ, for hypoid gears
- 7.4.6 Additional tooth strength parameters (for bevel and hypoid gears)
- 7.4.7 Root stress adjustment factor, YA
- 7.5 Permissible tooth root stress factors [Go to Page]
- 7.5.1 Relative surface condition factor, YR,relT-B2
- 7.5.2 Relative notch sensitivity factor, Yδ,relT-B2
- 8 Factors for permissible tooth root stress common for method€B1 and method€B2 [Go to Page]
- 8.1 Size factor, YX [Go to Page]
- 8.1.1 General
- 8.1.2 Structural and through hardened steels, spheroidal cast iron, perlitic malleable cast iron
- 8.1.3 Case, flame, induction hardened steels, nitrided or nitro carburized steels
- 8.1.4 Grey cast iron and spheroidal cast iron (ferrit structure)
- 8.2 Life factor, YNT [Go to Page]
- 8.2.1 General
- 8.2.2 Method€A
- 8.2.3 Method€B
- Bibliography [Go to Page]