JB/T 9741.1-2011Internal combustion engines - Tappets - Specification - Part 1: Mechanical tappets (English PDF)
内燃机 气门挺柱 技术条件 第1部分：机械式挺柱
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
May 18, 2011
Implementation date
August 1, 2011
Scope
JB/T 9741.1-2011 is the English-translated version of 内燃机 气门挺柱 技术条件 第1部分：机械式挺柱.
JB/T 9741.1-2011 is the first part of a recommended Chinese machinery industry standard on the tappets of internal combustion engines, and it covers mechanical tappets.
It sets out the structure of the mechanical valve tappet, the technical requirements, the test methods, the inspection rules and the provisions for marking, packaging, transport and storage.
It applies to the mechanical valve tappets of reciprocating internal combustion engines with a cylinder diameter not greater than 200 mm, and to the mushroom-type, cylindrical and cup-shaped tappets used in tractors, combine harvesters, automobiles, construction machinery, stationary diesel engines and small marine engines.
The part carries Chinese classification J93 and international classification 27.020. It cites GB/T 1184-1996, GB/T 1800.1-2009 and GB/T 9450.
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Document preview — JB/T 9741.1-2011
National Standard of the People's Republic of China
- ICS
- 27.020
- Replacing
- JB/T 9741-1999
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 9741.1-2011 was issued by MIIT on 18 May 2011 and has been in force since 1 August 2011.
It is one of 3 parts of the JB/T 9741 series.
2 Scope
This standard is the first part of a recommended Chinese machinery industry standard on the tappets of internal combustion engines, and it covers mechanical tappets. It sets out the structure of the mechanical valve tappet, the technical requirements, the test methods, the inspection rules and the provisions for marking, packaging, transport and storage. It applies to the mechanical valve tappets of reciprocating internal combustion engines with a cylinder diameter not greater than 200 mm, and to the mushroom-type, cylindrical and cup-shaped tappets used in tractors, combine harvesters, automobiles, construction machinery, stationary diesel engines and small marine engines. The part carries Chinese classification J93 and international classification 27.020. It cites GB/T 1184-1996, GB/T 1800.1-2009 and GB/T 9450.
3 Normative references
JB/T 9741.1-2011 cites the following standards, which apply in full or in part through the references made to them in its clauses.
GB/T 230.1
GB/T 699
GB/T 1184-1996 — Geometrical tolerancing. Geometrical tolerance for features without individual tolerance indications
GB/T 1299
GB/T 1348
GB/T 1800.1-2009
GB/T 1958
GB/T 2828.1
GB/T 3077
GB/T 3821
GB/T 5617
GB/T 6060.2
GB/T 9450
GB/T 11354
4 About this standard
Issued by: MIIT
English translation: about 15 pages
5 Related standards
Other parts of this standard:
JB/T 9741-1999 — Valve tappets - Technical requirements
JB/T 9741.2-2015 — Valve tappets - Specification - Part 2: Hydraulic tappets
6 Classification and status
International classification (ICS): 27.020
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 230.1Metallic materials - Rockwell hardness test - Part 1: Test method
- GB/T 699Quality carbon structure steels
- GB/T 1184-1996Geometrical tolerancing. Geometrical tolerance for features without individual tolerance indications
- GB/T 1299Tool and mould steels
- GB/T 1348Spheroidal graphite iron castings
- GB/T 1800.1-2009Geometrical product specifications (GPS) - ISO code system for tolerances on linear sizes - Part 1: Basis of tolerances, deviations and fits
Similar standards
Editions of JB/T 9741.1
| Edition | Title | Revision | Status |
|---|---|---|---|
| JB/T 9741.1-2011 | Internal combustion engines - Tappets - Specification - Part 1: Mechanical tappets | current edition | Current |
| JB/T 9741-1999 | Internal combustion engines - Tappets - Specification - Part 1: Mechanical tappets | previous edition | Superseded |
This page sells the current edition, JB/T 9741.1-2011. Earlier editions are listed for reference only.
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Related Standards
GB/T 11354-2025 — Determination of nitriding hardness depth and metallographic examination for steel
GB/T 1184-1996 — Geometrical tolerancing. Geometrical tolerance for features without individual tolerance indications
GB/T 1299-2025 — Tool and mould steels
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