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22/30402445 DC BS ISO 10300-2. Calculation of load capacity of bevel gears - Part 2. Calculation of surface durability (pitting), 2022
- ISO_DIS 10300-2 ed.3 - id.79402 Enquiry PDF (en).pdf [Go to Page]
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Symbols, units, general subscripts and abbreviated terms
- 5 Macro pitting damage€— General aspects [Go to Page]
- 5.1 Acceptable versus unacceptable macro pitting
- 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 Macro pitting 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 (macro pitting) – Method€B1-localised
- Bibliography [Go to Page]