BS ISO 13050:2014

Foreword
1 Scope
2 Normative references
3 Synchronous belt drive system types
4 Belt nomenclature
5 Pulley nomenclature
6 Profile system G
7 Profile system H
8 Profile system R
9 Profile system S
Annex A (normative) - Belt pitch lengths and tolerances
Annex B (normative) - Relationship between centre distance
        and belt pitch length
Annex C (normative) - Pulley tolerances
Annex D (normative) - Flange dimensions
Bibliography

Defines 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.

This International Standard 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.