What is BS ISO 4156-1:2021 about?
This is the first of three international standards in a series that provides the data and indications necessary for the design, manufacture and inspection of straight (non-helical) side-fitting cylindrical involute splines. BS ISO 4156-1 deals with generalities, while parts 2 and 3 deal with dimensions and inspection respectively.
Who is BS ISO 4156-1:2021 for?
Engineering professionals involved with the design, manufacture and inspection of involute spline components. They will likely, but not exclusively, work in:
- Automotive: electric and conventional vehicles including trucks and off-road vehicles
- Marine applications
- Aerospace
- Power generation: conventional, wind, wave and solar
- Food handling and processing
- Pharmaceuticals
- Defence
- Machine tools
- Cranage and material handling
- Mining
What does BS ISO 4156-1:2021 cover?
It provides the data and indications necessary for the design and manufacture of straight (non-helical) side-fitting cylindrical involute splines.
Limiting dimensions, tolerances, manufacturing deviations and their effects on the fit between connecting coaxial spline elements are defined in the formulae and given in the tables.
NOTE: Unless otherwise specified, linear dimensions are expressed in millimetres and angular dimensions in degrees.
Why should you use BS ISO 4156-1:2021?
It includes a detailed explanation of the effective size and fit concept associated with involute splines
- While the use of older BSI, DIN or ANSI designs is acceptable, this standard will minimize tooling costs
- It helps manufactures enter new markets and increase customer trust
- It develops the expertise of users
BS ISO 4156-1 contributes to UN Sustainable Development Goal 7 on ensuring access to affordable, reliable, sustainable and modern energy for all because its use can support renewable power generation.
What’s new about BS ISO 4156-1:2021?
This is a revision to BS ISO 4156-1:2005 that corrects typographical, grammatical, diagrammatical and technical errors that were introduced during the previous more extensive revision.