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BS ISO 10300-2:2023 Calculation of load capacity of bevel gears - Calculation of surface durability (macropitting), 2023
- National foreword
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Symbols, general subscripts and abbreviated terms
- 5 Macropitting damage — General aspects [Go to Page]
- 5.1 Acceptable versus unacceptable macropitting
- 5.2 Assessment requirements
- 5.3 General rating procedure
- 6 Gear flank rating formulae — Method B1 [Go to Page]
- 6.1 Contact stress formula
- 6.2 Permissible contact stress
- 6.3 Calculated safety factor for contact stress
- 6.4 Contact stress factors [Go to Page]
- 6.4.1 Mid-zone factor, ZM-B
- 6.4.2 Load sharing factor, ZLS
- 6.5 Permissible contact stress factors [Go to Page]
- 6.5.1 Bevel gear factor, ZKP
- 6.5.2 Size factor, ZX
- 6.5.3 Hypoid factor, ZHyp
- 7 Gear flank rating formulae — Method B2 [Go to Page]
- 7.1 Contact stress formula
- 7.2 Permissible contact stress
- 7.3 Calculated safety factor for contact stress
- 7.4 Contact stress factors [Go to Page]
- 7.4.1 General
- 7.4.2 Macropitting resistance geometry factor, ZI
- 7.4.3 Facewidth factor, ZFW
- 7.4.4 Contact stress adjustment factor, ZA
- 8 Factors for contact stress and permissible contact stress common for method B1 and method B2 [Go to Page]
- 8.1 Elasticity factor, ZE
- 8.2 Lubricant film influence factors, ZL, Zv, ZR [Go to Page]
- 8.2.1 General
- 8.2.2 Restrictions
- 8.2.3 Method B
- 8.2.4 Method C (product of ZL, Zv and ZR)
- 8.3 Work hardening factor, ZW [Go to Page]
- 8.3.1 General
- 8.3.2 Work hardening factor, ZW: Method A
- 8.3.3 Work hardening factor, ZW: Method B
- 8.4 Life factor, ZNT [Go to Page]
- 8.4.1 General
- 8.4.2 Method A
- 8.4.3 Method B
- Annex A (informative) Local calculation method for surface durability (macropitting) – Method B1-localised
- Bibliography [Go to Page]
