Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements, dimensions
4.1 General
4.2 Material
4.3 Number of teeth
4.4 Dimensions
5 Testing
6 Designation
7 Marking
Annex A (informative) Calculation principles
A.1 General
A.2 Reference diameter D[0] in millimetres
A.3 Groove base diameter d[3] in millimetres
A.4 Supporting diameter d[4] in millimetres
A.5 Groove width b in millimeters
A.6 External diameter d[1] in millimetres
A.7 External width c in millimetres
A.8 Chain pocket
A.8.1 Pocket length w in millimetres
A.8.2 Horizontal radius r[1] in millimetres
A.8.3 Vertical radius r[2] in millimetres
National Annex NA (informative) Bibliography
Bibliography