ISO 13050:2014
Subscribe to updates

Synchronous belt drives -- Metric pitch, curvilinear profile systems G, H, R and S, belts and pulleys

(Not available in French)


ISO 13050:2014 specifies the principal characteristics of metric pitch curvilinear synchronous endless belts and pulleys in G, H, R, and S profile systems for use in synchronous belt drives (also known in the past as timing belt drives, positive belt drives, gear belt drives) for mechanical power transmission and where positive indexing or synchronization might be required.

The principal belt and pulley characteristics include the following: nominal belt tooth dimensions; belt tooth pitch spacing; belt length and width dimensions and tolerances; belt length measurement specifications; pulley groove dimensions and tolerances; pulley diameter and width dimensions and tolerances; pulley quality specification.


  • Document published on: 2014-12
    Edition: 2 (Monolingual) ICS: 21.220.10
    Status: Published Stage: 60.60 (2014-11-17)
    TC/SC: ISO/TC 41/SC 4 Number of Pages: 54
  • Revises: ISO 13050:1999

  • No corrigenda or amendments available

Related standards

  • PDF

    This format preserves the paper layout, and is watermarked

  • EPUB

    This format allows documents to be read on tablets and smartphones


    Enhanced user-friendly colour PDF format


    See any updates made from previous versions at a glance


    Normally A4 size documents. Shipping costs apply


Swiss francs CHF 178


Got a question?

Check out our FAQs

Email Customer Care
or call us on +41 22 749 08 88
09:00 – 12:00, 14:00 – 17:00 (UTC+1).