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GB/T 14653-2025: Flexible link coupling
Status: Valid GB/T 14653: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 14653-2025 | English | 449 |
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4 days [Need to translate]
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Flexible link coupling
| Valid |
GB/T 14653-2025
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| GB/T 14653-2008 | English | 369 |
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3 days [Need to translate]
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Flexible link coupling
| Valid |
GB/T 14653-2008
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| GB/T 14653-1993 | English | 599 |
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4 days [Need to translate]
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Flexible link coupling
| Obsolete |
GB/T 14653-1993
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PDF similar to GB/T 14653-2025
Basic data | Standard ID | GB/T 14653-2025 (GB/T14653-2025) | | Description (Translated English) | Flexible link coupling | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | U48 | | Classification of International Standard | 47.020.20 | | Word Count Estimation | 22,280 | | Date of Issue | 2025-06-30 | | Date of Implementation | 2026-01-01 | | Older Standard (superseded by this standard) | GB/T 14653-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 14653-2025: Flexible link 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/GBT14653-2025
ICS 47.020.20
CCSU48
National Standard of the People's Republic of China
Replaces GB/T 14653-2008
Flexible rod 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 14653-2008 "Flexible Rod Couplings". Compared with GB/T 14653-2008, except for the structural adjustment and editing
In addition to the functional changes, the main technical changes are as follows.
a) The permissible ambient temperature of the applicable objects of this document has been changed (see Chapter 1, 4.7 of the.2008 edition);
b) Added the definitions of static torsional stiffness and bending stiffness (see 3.2 and 3.3);
c) Deleted the permissible ambient temperature (see 4.7 of the.2008 edition);
d) Modified some basic parameter data in Tables 1 to 4 (see 5.2, 4.3 of the.2008 edition);
e) Added weight requirements (see 6.3);
f) Added specific quality requirements for main parts after heat treatment (see 6.4.2);
g) The static torsional stiffness performance requirements have been changed (see 6.5.1, 5.4 of the.2008 edition);
h) Changed the dynamic balancing performance requirements (see 6.5.2, 5.5 of the.2008 edition);
i) The roughness test method has been changed (see 7.1.2, 6.1.2 of the.2008 edition);
j) Added weight test method (see 7.3);
k) The static torsional stiffness test method has been changed (see 7.5.1, 6.4 of the.2008 edition);
l) The dynamic balancing test method has been changed (see 7.5.2, 6.5 of the.2008 edition);
m) Added marking requirements (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. Chongqing Gearbox Co., Ltd. and China Shipbuilding Industry Corporation Comprehensive Technical and Economic Research Institute.
The main drafters of this document are. Huang Xiaokang, Qi Chao, Wang Youbing, Liu Gang, Qin Jinlong, Ma Qiang, Li Qianqian, and Qian Kejiang.
This document was first issued in.1993, revised for the first time in.2008, and this is the second revision.
Flexible rod coupling
1 Scope
This document provides the classification and marking, structure and parameters of flexible rod couplings (hereinafter referred to as couplings), and specifies the technical requirements of couplings.
Requirements, inspection rules, marking, packaging, transportation and storage, and describes the corresponding test methods.
This document is applicable to the case where the two connected shafts require angular offset compensation and/or axial offset compensation, and the allowable ambient temperature is -30℃~120℃
Design, manufacture and inspection of couplings.
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 symbols for packaging, storage and transportation
GB/T 699-2015 High-quality carbon structural steel
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
axialstiffness
CX
The force required to produce a unit deformation of the two coupling halves in the axial direction.
3.2
Cs
The torsional stiffness of a coupling under static load.
3.3
bending stiffness
Cb
The ability of a coupling to resist bending deformation when subjected to bending stress.
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