ISO/TS 10300-20:2021

Calculation of load capacity of bevel gears — Part 20: Calculation of scuffing load capacity — Flash temperature method

This document provides a calculation method for bevel and hypoid gears regarding scuffing based on experimental and theoretical investigation[7]. This calculation method is a flash temperature method. The formulae in this document are intended to establish uniformly acceptable methods for calculating scuffing resistance of straight, helical (skew), spiral bevel, Zerol and hypoid gears made of steel. They are applicable equally to tapered depth and uniform depth teeth. Hereinafter, the term “bevel gear” refers to all of these gear types; if not the case, the specific forms are identified. A calculation method of the scuffing load capacity of bevel and hypoid gears based on an integral temperature method is not available when this document is published. The formulae in this document are based on virtual cylindrical gears and restricted to bevel gears whose virtual cylindrical gears have transverse contact ratios of εvα

Calcul de la capacité de charge des engrenages coniques — Partie 20: Calcul de la capacité de charge au grippage — Méthode de la température-éclair

General Information

• Status: Published
• Publication Date: 06-Apr-2021
• ICS: 21.200 - Gears
• Technical Committee: ISO/TC 60/SC 2 - Gear capacity calculation
• Drafting Committee: ISO/TC 60/SC 2/WG 13 - Bevel gears
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Apr-2024
• Completion Date: 15-Apr-2024

Standards Content (Sample)

TECHNICAL ISO/TS
SPECIFICATION 10300-20
First edition
2021-04
Calculation of load capacity of bevel
gears —
Part 20:
Calculation of scuffing load capacity —
Flash temperature method
Calcul de la capacité de charge des engrenages coniques —
Partie 20: Calcul de la capacité de charge au grippage — Méthode de
la température-éclair
Reference number
ISO/TS 10300-20:2021(E)
©
ISO 2021

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ISO/TS 10300-20:2021(E)

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ISO/TS 10300-20:2021(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Virtual cylindrical gear . 4
5.1 General . 4
5.2 Local geometry parameters . 5
5.2.1 Transverse path of contact . 5
5.2.2 Length of contact lines . 6
5.2.3 Local equivalent radius of curvature, ρ .
rel,Y 8
5.2.4 Local load sharing factor, X .
LS,Y 8
6 Stresses and velocities . 9
6.1 Local modified contact stress, σ .
H,mod,Y 9
6.2 Sliding and sum of velocities .10
6.3 Local relative lubricating film thickness, λ .
z,Y 11
6.4 Local coefficient of friction, µ .
Y 14
7 Local contact temperature, θ .
...