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GB/T 12922-2025: Elastic damping leaf coupling
Status: Valid GB/T 12922: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 12922-2025 | English | 629 |
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5 days [Need to translate]
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Elastic damping leaf coupling
| Valid |
GB/T 12922-2025
|
| GB/T 12922-2008 | English | 629 |
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5 days [Need to translate]
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Elastic damping leaf coupling
| Valid |
GB/T 12922-2008
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| GB/T 12922-1991 | English | 639 |
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5 days [Need to translate]
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Elastic damping leaf coupling
| Obsolete |
GB/T 12922-1991
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PDF similar to GB/T 12922-2025
Basic data | Standard ID | GB/T 12922-2025 (GB/T12922-2025) | | Description (Translated English) | Elastic damping leaf coupling | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | U48 | | Classification of International Standard | 47.020.20 | | Word Count Estimation | 31,355 | | Date of Issue | 2025-06-30 | | Date of Implementation | 2026-01-01 | | Older Standard (superseded by this standard) | GB/T 12922-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 12922-2025: Elastic damping leaf coupling---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT12922-2025
ICS 47.020.20
CCSU48
National Standard of the People's Republic of China
Replaces GB/T 12922-2008
Elastic damping spring coupling
Released on June 30, 2025
Implementation on January 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 12922-2008 "Elastic Damping Spring Coupling". Compared with GB/T 12922-2008, except for the structural adjustment
Besides the editorial changes, the main technical changes are as follows.
a) The scope of application of this document has been changed (see Chapter 1, Chapter 1 of the.2008 edition);
b) The marking method of the coupling has been changed (see 4.2.1, 4.3.1 of the.2008 edition);
c) The basic parameter requirements for couplings have been changed (see 5.2, 4.4 of the.2008 edition);
d) Deleted the permissible ambient temperature (4.6 of the.2008 edition);
e) Added weight requirements (see 6.3);
f) The material selection criteria for the main parts of the coupling have been changed (see 6.4.1, 5.4.1 of the.2008 edition);
g) The static torsional stiffness requirements of the coupling have been changed (see 6.5.2, 5.5.2 of the.2008 edition);
h) Added the requirements for the ambient temperature adaptability of the coupling (see 6.5.5);
i) The roughness test method has been changed (see 7.1.2, 6.2.2 of the.2008 edition);
j) Added weight test method (see 7.3);
k) The sealing test method has been changed (see 7.5.1, 6.5 of the.2008 edition);
l) The static torsion test method has been changed (see 7.5.2, 6.6 of the.2008 edition);
m) Added the test method for the ambient temperature adaptability of the coupling (see 7.5.5);
n) Changed the factory inspection requirements for dynamic balancing items (see Table 11, Table 11 of the.2008 edition);
o) Added coupling marking content (see 9.1).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed and coordinated by the National Technical Committee for Standardization of Marine Machinery (SAC/TC137).
This document was drafted by. China Shipbuilding Industry Corporation Comprehensive Technical and Economic Research Institute and Chongqing Gearbox Co., Ltd.
The main drafters of this document are Liu Gang, Qi Chao, Shi Maowang, Wu Yulian, Song Zhilong, Sun Chengwen, Li Qianqian, and Huang Zhaojie.
This document was first issued in.1991, revised for the first time in.2008, and this is the second revision.
Elastic damping spring coupling
1 Scope
This document provides the classification and marking, structure and parameters of elastic damping spring coupling (hereinafter referred to as "coupling"), and specifies the
The technical requirements, inspection rules, marking, packaging, transportation and storage, etc., describe the corresponding test methods.
This document is applicable to power units such as ships, internal combustion locomotives, internal combustion engine generator sets, heavy vehicles and industrial diesel engine power units.
It is used to adjust the natural frequency of the torsional vibration of the mechanical system, reduce the amplitude of the resonance, and the allowable ambient temperature is -30℃~85℃.
Design, manufacture and acceptance.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 191 Pictorial markings for packaging, storage and transportation
GB/T 1804-2000 General tolerances - Tolerances of linear and angular dimensions without tolerance indications
GB/T 3077-2015 Alloy Structural Steel
GB/T 3098.1-2010 Mechanical properties of fasteners - Bolts, screws and studs
GB/T 9239.1-2006 Mechanical vibration steady-state (rigid) rotor balance quality requirements Part 1.Specifications and balance tolerances
test
GB/T 15822.1 Non-destructive testing—Magnetic particle testing—Part 1.General principles
GB/T 15822.2 Non-destructive testing - Magnetic particle testing - Part 2.Testing media
GB/T 15822.3 Non-destructive testing—Magnetic particle testing—Part 3.Equipment
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
ω0
Calculates a characteristic value of the coupling's dynamic torsional stiffness and damping coefficient.
3.2
Cs
The torsional stiffness of a coupling under static load.
3.3
The value of the relative torsion angle between the inner and outer components of the coupling under rated torque.
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