ISO 10300-1:2014
Calculation of load capacity of bevel gears - Part 1: Introduction and general influence factors

Standard No.

ISO 10300-1:2014

Release Date

2014

Published By

International Organization for Standardization (ISO)

Status

Be replaced 2023-08

Replace By

ISO 10300-1:2023

Latest

ISO 10300-1:2023

Scope

This part of ISO 10300 specifies the methods of calculation of the load capacity of bevel gears, the formulae and symbols used for calculation, and the general factors influencing load conditions. The formulae in ISO 10300 (all parts) are intended to establish uniformly acceptable methods for calculating the pitting resistance and bending strength of straight, helical (skew), spiral bevel, Zerol and hypoid gears. 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. The formulae take into account the known major factors influencing pitting on the tooth flank and fractures in the tooth root. The rating formulae are not applicable to other types of gear tooth deterioration such as plastic yielding, micropitting, case crushing, welding, and wear. The bending strength formulae are applicable to fractures at the tooth fillet, but not to those on the active flank surfaces, to failures of the gear rim or of the gear blank through the web and hub. Pitting resistance and bending strength rating systems for a particular type of bevel gears can be established by selecting proper values for the factors used in the general formulae. If necessary, the formulae allow for the inclusion of new factors at a later date. Note, ISO 10300 (all parts) is not applicable to bevel gears which have an inadequate contact pattern under load (see Annex D). The rating system of ISO 10300 (all parts) is based on virtual cylindrical gears and restricted to bevel gears whose virtual cylindrical gears have transverse contact ratios of εvα < 2. Additionally, the given relations are valid for bevel gears of which the sum of profile shift coefficients of pinion and wheel is zero (see ISO 23509). WARNING — The user is cautioned that when the formulae are used for large average mean spiral angles (βm1+βm2)/2 > 45°, for effective pressure angles αe > 30° and/or for large face widths b > 13 mmn, the calculated results of ISO 10300 (all parts) should be confirmed by experience.

ISO 10300-1:2014 Referenced Document

• ISO 10300-2:2014 Calculation of load capacity of bevel gears - Part 2: Calculation of surface durability (pitting)
• ISO 10300-3:2014 Calculation of load capacity of bevel gears - Part 3: Calculation of tooth root strength
• ISO 1122-1:1998 Vocabulary of gear terms - Part 1: Definitions related to geometry
• ISO 17485:2006 Bevel gears - ISO system of accuracy
• ISO 23509:2006 Bevel and hypoid gear geometry
• ISO 6336-1:2006 Calculation of load capacity of spur and helical gears - Part 1: Basic principles, introduction and general influence factors
• ISO 6336-5:2003 Calculation of load capacity of spur and helical gears - Part 5: Strength and quality of materials
• ISO 6336-6:2006 Calculation of load capacity of spur and helical gears - Part 6: Calculation of service life under variable load
• ISO 701:1998 International gear notation - Symbols for geometrical data
• ISO/TR 10064-6:2009 Code of inspection practice - Part 6: Bevel gear measurement methods
• ISO/TR 22849:2011 Design recommendations for bevel gears

ISO 10300-1:2014 history

• 2023 ISO 10300-1:2023 Calculation of load capacity of bevel gears — Part 1: Introduction and general influence factors
• 2014 ISO 10300-1:2014 Calculation of load capacity of bevel gears - Part 1: Introduction and general influence factors
• 2011 ISO 10300-1:2011 Calculation of load capacity of bevel gears — Part 1: Introduction and general influence factors
• 2001 ISO 10300-1:2001 Calculation of load capacity of bevel gears - Part 1: Introduction and general influence factors