JB/T 7668-2014Multi-disc Type Continuously Variable Transmission (English PDF)
多盘式无级变速器
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
July 9, 2014
Implementation date
November 1, 2014
Scope
JB/T 7668-2014 is the English-translated version of 多盘式无级变速器.
JB/T 7668-2014 is a recommended Chinese machinery industry standard for multi-disc type continuously variable transmissions, mechanical drives in which the speed is varied steplessly through friction discs.
It lays down the model designations and basic parameters of these units and then their requirements, test methods and inspection rules, closing with marking, packaging, transport and storage.
It is written for multi-disc variators, including two-stage arrangements. Its normative references include GB 191, GB/T 6404.2, GB/T 9439, GB/T 13306, GB/T 13384, GB/T 28417 and JB/T 7346, and it falls under Chinese classification J19 and ICS 21.120.
It supersedes JB/T 7668-1995. Issued on 9 July 2014, it has applied since 1 November 2014.
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Document preview — JB/T 7668-2014
National Standard of the People's Republic of China
- ICS
- 21.120
- Replacing
- JB/T 7668-1995
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- Foreword
- Scope
- Normative references
- About this standard
- Related standards
- Classification and status
1 Foreword
JB/T 7668-2014 was issued by MIIT on 9 July 2014 and has been in force since 1 November 2014.
It replaces the earlier edition JB/T 7668-1995.
2 Scope
This standard is a recommended Chinese machinery industry standard for multi-disc type continuously variable transmissions, mechanical drives in which the speed is varied steplessly through friction discs. It lays down the model designations and basic parameters of these units and then their requirements, test methods and inspection rules, closing with marking, packaging, transport and storage. It is written for multi-disc variators, including two-stage arrangements. Its normative references include GB 191, GB/T 6404.2, GB/T 9439, GB/T 13306, GB/T 13384, GB/T 28417 and JB/T 7346, and it falls under Chinese classification J19 and ICS 21.120. It supersedes JB/T 7668-1995.
3 Normative references
JB/T 7668-2014 cites the following standards, which apply in full or in part through the references made to them in its clauses.
GB 191
GB/T 6404.2
GB/T 9439
GB/T 13306
GB/T 13384
GB/T 28417
JB/T 7346
4 About this standard
Issued by: MIIT
English translation: about 15 pages
5 Related standards
Other editions:
JB/T 7668-1995 (earlier edition)
6 Classification and status
International classification (ICS): 21.120
Prefix JB/T: recommended standard.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 6404.2Acceptance code for gear units -- Part 2: Determination of mechanical vibrations of gear units during acceptance testing
- GB/T 9439Grey iron castings
- GB/T 13306Plates
- GB/T 13384General specifications for packing of mechanical and electrical product
- GB/T 28417Carbon bearing steel
- JB/T 7346Mechanical Continuously Variable Transmission - Test Methods
GB 191
Similar standards
Editions of JB/T 7668
| Edition | Title | Revision | Status |
|---|---|---|---|
| JB/T 7668-2014 | Multi-disc Type Continuously Variable Transmission | current edition | Current |
| JB/T 7668-1995 | Multi-disc Type Continuously Variable Transmission | previous edition | Superseded |
This page sells the current edition, JB/T 7668-2014. Earlier editions are listed for reference only.
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Related Standards
GB/T 13306-2011 — Plates
GB/T 13384-2008 — General specifications for packing of mechanical and electrical product
GB/T 28417-2023 — Carbon bearing steel
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JB/T 7668-2014
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