GB/Z 10062.20-2025Calculation of load capacity of bevel gears - Part 20: Calculation of scuffing load capacity - Flash temperature method (English PDF)
锥齿轮承载能力计算方法 第20部分：胶合承载能力计算 闪温法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 3, 2025
Implementation date
December 3, 2025
Scope
GB/Z 10062.20-2025 is the English-translated version of 锥齿轮承载能力计算方法 第20部分：胶合承载能力计算 闪温法.
GB/Z 10062.20-2025 is the Chinese standard "Calculation of load capacity of bevel gears - Part 20: Calculation of scuffing load capacity - Flash temperature method".
Its scope clause reads: Based on practical experience and theoretical research [7], this document describes a method for calculating the bearing capacity of bevel gears and quasi-hyperboloid gears through adhesive bonding.
Method --- flash temperature method. The formulas in this document aim to establish a unified and acceptable standard for steel spur bevel gears, helical bevel gears, spiral bevel gears, and zero-degree bevel gears.
Methods for calculating the anti-galling ability of hypoid gears and quasi-hyperboloid gears. These formulas are also applicable to tapered gears and constant-height gears.
In the following text, the techniques... The term "bevel gear" refers to all of the above gear types; if not all types are included, the specific type will be specified.
At the time of this document's publication, the accumulated temperature method for calculating the anti-adhesion load-bearing capacity of bevel gears and quasi-hypoid gears was not yet available.
The formulas in this document are based on the equivalent cylindrical gear theory and are limited to bevel gears where the end face overlap ratio epsilonvalpha < 2.
The calculation results are valid within the service factor range specified in ISO 10300-1 (see ISO 6336-2). Furthermore, the given calculation method applies to small wheels and...
This also applies to bevel gears where the sum of the profile modification coefficients of the large gear is zero (see ISO 23509).
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Document preview — GB/Z 10062.20-2025
National Standard of the People's Republic of China
- ICS
- 21.200
- Classification
- J 17
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- Introduction
- 1.Scope
- 2 Normative References
- 3.Terms and Definitions
- 4 Symbols
- 5 equivalent cylindrical gears
- 5.1 Overview
- 5.2 Local geometric parameters
- 6.Stress and velocity
- 6.1 Locally Modified Contact Stress (sigmaH, mod, Y)
- 6.2 The sum of sliding and velocity
- 6.3 Relative lubricating oil film thickness at contact point Y (lambdaz, Y)
- 6.4 Local friction coefficient (µY) at contact point Y
- 7.Local contact temperature (thetaC, Y) at contact point Y
- 7.1 Overview
- 7.2 Power Loss Affecting Body Temperature
- 7.3 Body temperature (thetaM)
- 7.4 Flash temperature (thetafl,Y) at contact point Y
- 8.Permissible contact temperature 17°C
- 8.1 Limiting temperature of standard bonding test (thetaS, DIN)
- 8.2 Allowable temperature considering the effect of contact temperature (thetaSC)
- 8.3 Permissible gluing temperature (thetaS, Y)
- 9.Local safety factor (SS, Y) at contact point Y
- References
1 Scope
Based on practical experience and theoretical research [7], this document describes a method for calculating the bearing capacity of bevel gears and quasi-hyperboloid gears through adhesive bonding.
Method --- flash temperature method.
The formulas in this document aim to establish a unified and acceptable standard for steel spur bevel gears, helical bevel gears, spiral bevel gears, and zero-degree bevel gears.
Methods for calculating the anti-galling ability of hypoid gears and quasi-hyperboloid gears. These formulas are also applicable to tapered gears and constant-height gears. In the following text, the techniques...
The term "bevel gear" refers to all of the above gear types; if not all types are included, the specific type will be specified.
At the time of this document's publication, the accumulated temperature method for calculating the anti-adhesion load-bearing capacity of bevel gears and quasi-hypoid gears was not yet available.
The formulas in this document are based on the equivalent cylindrical gear theory and are limited to bevel gears where the end face overlap ratio epsilonvalpha < 2.
The calculation results are valid within the service factor range specified in ISO 10300-1 (see ISO 6336-2). Furthermore, the given calculation method applies to small wheels and...
This also applies to bevel gears where the sum of the profile modification coefficients of the large gear is zero (see ISO 23509).
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
Note. GB/T 10062.1-2003 Method for calculating the load-carrying capacity of bevel gears - Part 1.Overview and general influence coefficients (ISO 10300-1.2001, IDT)
ISO 10300-2 Method for calculating the load-carrying capacity of bevel gears - Part 2.Calculation (method) of surface durability (pitting)
Note. GB/T 10062.2-2003 Calculation Method for Bearing Capacity of Bevel Gears Part 2.Calculation of Contact Fatigue (Pitting) Strength of Tooth Surface (ISO 10300-2)
2001, IDT)
ISO 14635-1 Gears - FZG test method - Part 1.Relative scuffing capacity of oils - FZG test method A/
Note. GB/T 19936.1-2005 Gear FZG Test Method Part 1.Oil Scuffing Capacity FZG Test A/8.3/90 (ISO 14635-1.2000, IDT)
ISO 17485 Bevel gears - ISO system of accuracy
Note. GB/T 11365-2019 Precision system for bevel gears (ISO 17485.2006, IDT)
Note. GB/T 43146-2023 Geometry of bevel gears and hypoid gears (ISO 23509.2016, IDT) […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 28 pages — is available in the English PDF.
Referenced standards
Normative references
ISO 10300-2 · ISO 14635-1 · ISO 17485
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