JB/T 3122-2007Rolling bearings - Combined needle roller and thrust ball bearings - Boundary dimensions (English PDF)
滚动轴承 滚针和推力球组合轴承 外形尺寸
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
March 6, 2007
Implementation date
September 1, 2007
Scope
JB/T 3122-2007 is the English-translated version of 滚动轴承 滚针和推力球组合轴承 外形尺寸.
JB/T 3122-2007 is the Chinese machinery industry standard covering rolling bearings - Combined needle roller and thrust ball bearings - Boundary dimensions. It was issued on 6 March 2007 and has been in force since 1 September 2007, replacing JB/T 3122-1991.
The document is under the responsibility of the Ministry of Industry and Information Technology. This page is published from the official record of the 2007 edition.
The figures, limits and tables the standard contains are those of the document itself, delivered in full with the English translation.
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Document preview — JB/T 3122-2007
National Standard of the People's Republic of China
- Replacing
- JB/T 3122-1991
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- [Preview only]
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 3.1 Type
- 3.2 Basic parameters
- 4 Types and basic parameters
- 4.1 Types
- 4.2 Model designation
- 4.3 Nominal operating conditions
- 4.4 Safety and hygiene
- 4.5 Welding
- 4.6 Bridge (After crane operation mechanism assembled)
- 4.7 Assembly
- 4.8 Electrical control equipment
- 4.9 Steel pretreatment and painting
- 5 Technical requirements
- 5.1 General requirements
- 5.2 Safety requirements
- 5.3 Cold and hot working forming
- 5.4 Rated load test
- 5.5 Whole machine noise test
- 5.6 Static rigidity test
- 5.7 Dynamic load test
- 5.8 Crane span deviation
- 5.9 Diagonal difference of bridge
- 6 Test methods
- 6.1 Exit-factory inspection
- 6.2 Type inspection
- 7 Inspection rules
- 7.1 Marking
- 7.2 Packaging, transportation and storage
- 7.3 Transportation
- 7.4 Storage
- 8 Marking, packaging, transportation and storage
- 9 标志和标签 9 Marking and labeling
1 Foreword
JB/T 3122-2007 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 6 March 2007 and has been in force since 1 September 2007.
It replaces the earlier edition JB/T 3122-1991, JB/T 3122-1982.
The JB/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.
2 Scope Preview
JB/T 3122-2007 carries no ICS number and no Chinese Standard Classification code.
This catalogue holds 21,922 other JB/T standards.
Of the 5,298 JB/T standards that do carry an ICS number, 1,460 (28%) fall under ICS 25, in the field of manufacturing engineering.
3 About this standard
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
English translation: about 15 pages
4 Related standards
Other editions:
JB/T 3122-1991 (earlier edition)
JB/T 3122-1982 (earlier edition)
Standards on related subjects:
GB/T 4663-2017 — Rolling bearings—Cylindrical thrust roller bearings—Boundary dimensions
GB/T 4661-2015 — Rolling bearings—Cylindrical rollers
JB/T 1460-2011 — Rolling bearings - Parts made of high-carbon chromium stainless steel - Technical specifications for heat treatment
JB/T 8919-2025 — Rolling bearings - Insert bearings and eccentric locking collars - Specifications
JB/T 5305-2025 — Rolling bearings - Thrust ball bearings with aligning seat washers - Geometricalproduct specifications (GPS) and tolerance values
JB/T 5306-2025 — Spherical plain bearings - Spherical plain bearing rod end with ball stud
5 Classification and status
Chinese Standard Classification (CCS): J 11
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.
Similar standards
Editions of JB/T 3122
| Edition | Title | Revision | Status |
|---|---|---|---|
| JB/T 3122-2007 | Rolling bearings - Combined needle roller and thrust ball bearings - Boundary dimensions | current edition | Current |
| JB/T 3122-1991 | Rolling bearings - Combined needle roller and thrust ball bearings - Boundary dimensions | previous edition | Superseded |
This page sells the current edition, JB/T 3122-2007. Earlier editions are listed for reference only.
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