ISO Spur Gear Standards

Presents the necessity of comparing ISO and AGMA power rating standards. Gives the results of using computer software to compare the behavior of the bending geometry factor (J-factor) values for 135 spur-gear meshes. Shows that differences exist between the results given by...

The standard modules in this standard conform with ISO/R 54 and apply to spur and helical involute cylindrical gears.

This part of ISO 6336 specifies the information and standardized conditions necessary for the calculation of the service life (or safety factors for a required life) of gears subject to variable loading. While the method is presented in the context of ISO 6336 and calculation...

This document specifies the fundamental formulae for use in tooth bending stress calculations for involute external or internal spur and helical gears with a rim thickness sR > 0,5 ht for external gears and sR > 1,75 mn for internal gears. In service, internal...

Dimensions and accuracy requirements for cutters for generating involute spur gear teeth. Two tolerance grades. Covers disc, extended and screwed hub, parallel, large and No. 2 Morse stub shank types. Markings for pinion type cutters and information to give when ordering. Module...

involute external or internal spur and helical gears with a rim thickness sR > 0,5 ht for external gears and sR > 1,75 mn for internal gears. In service, internal gears can experience failure modes other than tooth bending fatigue, i.e. fractures starting at the...

This document specifies requirements for the accuracy of general-purpose hobs of 0,5 module to 40 module. These hobs are intended for producing gears which conform to ISO 53 and ISO 54. This document applies to hobs for spur and helical gears. It applies to solid...

This document specifies the fundamental formulae for use in tooth bending stress calculations for involute external or internal spur and helical gears with a rim thickness sR > 0,5 ht for external gears and sR > 1,75 mn for internal gears. In service, internal...

This standard is applicable to external spur and helical gears with diametral pitch of 20 through 120 and a profile angle of 20 degrees. It only applies to standard gears with 24 teeth or more; enlarged pinions with 9 through 23 teeth; and reduced gears for meshing with...

This document describes a procedure for the calculation of the tooth flank fracture load capacity of cylindrical spur and helical gears with external teeth. It is not intended to be used as a rating method in the design and certification process of a gearbox. The formulae specified...

This document presents the basic principles of, an introduction to, and the general influence factors for the calculation of the load capacity of spur and helical gears. Together with the other documents in the ISO 6336 series, it provides a method by which different...

Dimensional accuracy and material requirements for spur gears in the pitch sizes of 0.5 module to 50 module (48 to 0.5 dp)

This document presents worked examples that apply exclusively the approximation methods for the determination of specific influential factors, such as the dynamic factor, Kv, and the load distributions factors KHα, KHβ, etc., where full analytical calculation procedures are provided within the...

This part of ISO 10303 specifies guidance on the usage of ISO 10303-214 application reference model (ARM) for the scope and information requirements for the exchange of information between the applications that support the development process of the mechanical aspects of gear...

This standard is applicable to external spur and helical gears with 1.25 through 0.2 module and a profile angle of 20 degrees. It only applies to standard gears with 24 teeth or more; enlarged pinions with 9 through 23 teeth; and reduced gears for meshing with enlarged...

This document specifies requirements for the accuracy of general-purpose hobs of 0,5 module to 40 module. These hobs are intended for producing gears which conform to ISO 53 and ISO 54. This document applies to hobs for spur and helical gears. It applies to solid...

This document describes contact and tooth-root stresses and gives numerical values for both limit stress numbers. It specifies requirements for material quality and heat treatment and comments on their influences on both limit stress numbers. Values in accordance with this document are suitable for...

This standard applies to spur and helical gearlng of 20 through 120 diametral pitch. Similar data for spur gears of 19.99 diametral pitch and coarser is found in USAS B6.1-1968, "Tooth Proportions for Coarse-Pitch Involute Spur Gears." (AGMA 201.02). The tooth...

Understanding how gears are formed and how they interact or mesh with each other is essential when designing equipment that uses gears or gear trains. The way in which gear teeth are formed and how they mesh is determined by their geometry and kinematics, which is the...

This information sheet describes many of the ways in which powder metal, PM, gear teeth can fail and recommends methods for reducing PM gear failures. It provides basic guidance for those attempting to analyze PM gear failures. The information sheet should be used in...