1 Scope
This standard specifies the dimensions and tolerances of the profile of electric bicycle rims, and specifies the rim profile curve and the main dimensions of the part of the tyre shaped to fit the rim.
This standard is applicable to the rims of various series of electric bicycle tyres specified in GB/T 31548.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
GB/T 2933 Wheels and rims for pneumatic tyres - Vocabulary, designation and marking
GB/T 6326 Tyre terms and definitions
GB/T 31546 Electric bicycle tyres
GB/T 31548 Series of electric bicycle tyres
3 Terms and definitions
For the purpose of this document, the terms and definitions given in GB/T 2933 and GB/T 6326 apply.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Classification and designation
6 Profile dimension and size designation of rims
7 Valve hole and flap of rim
Annex A (Informative) Method for testing rim dimension
Annex B (Informative) Profile of rims with nominal width code of 34 and above
Bibliography
