Last updated: 9 November 2026.
Direct answer. The national standards registry returns 61 records for shaft couplings. Forty are current and twenty-one are not. All 61 are recommended (GB/T), none mandatory. Four products were revised in 2025, so a drawing citing GB/T 5843-2003, 5844-2002, 12922-2008 or 14653-2008 names an abolished edition.
All 61 GB records for shaft couplings, the four 2025 revisions now in force, the twenty abolished editions buyers still quote, and what the registry never states.
Most Chinese coupling quotations are answered from a drawing that names a standard. The number on that drawing is either current or it is not, and the difference is checkable in one place: the national standards registry. This page reads the registry's own coupling query and lays out what it returns, what it does not return, and how to use it in a purchase order.
The registry query for 联轴器 (shaft coupling) reports 61 records. All 61 were retrieved, with no shortfall between the reported count and the pages fetched.
| Field | Count |
|---|---|
| Records returned | 61 of 61 |
| Current (现行) | 40 |
| Abolished (废止) | 20 |
| Not yet in force (即将实施) | 1 |
| Mandatory (强制性) | 0 |
| Recommended (推荐性) | 61 |
Two conclusions follow directly, and both matter commercially. First, there is no mandatory national standard for shaft couplings in this registry — every record is GB/T, which is voluntary. A supplier's line "we meet the GB standard" therefore refers to a recommended specification, not to a certificate of conformity, and no inspection body grants a "GB/T compliant" mark. Second, the registry is a record of documents, not of products: it will tell you a standard exists, when it took effect and whether it was withdrawn. It will not tell you a tolerance, a torque rating, a material or a test result.
The twenty abolished records are, with one exception, earlier editions of standards that still exist in a newer form. That is the commercially dangerous pattern: the number looks familiar, the edition is dead.
| Abolished edition | Title on the registry | Current edition of the same document |
|---|---|---|
| GB/T 10614-1989 | Core-type flexible coupling | GB/T 10614-2008 |
| GB/T 12458-2003 | Couplings — classification | GB/T 12458-2017 |
| GB/T 12922-1991 | Flexible damping reed coupling | GB/T 12922-2025 |
| GB/T 12922-2008 | Flexible damping reed coupling | GB/T 12922-2025 |
| GB/T 14653-1993 | Flexible rod coupling | GB/T 14653-2025 |
| GB/T 14653-2008 | Flexible rod coupling | GB/T 14653-2025 |
| GB/T 2496-1996 | Flexible ring coupling | GB/T 2496-2008 |
| GB/T 3507-1983 | Nominal torque series for mechanical couplings | GB/T 3507-2008 |
| GB/T 3852-1997 | Coupling shaft holes, connection types and dimensions | GB/T 3852-2017 |
| GB/T 3852-2008 | Coupling shaft holes, connection types and dimensions | GB/T 3852-2017 |
| GB/T 3931-1997 | Couplings — terminology | GB/T 3931-2010 |
| GB/T 4323-2002 | Flexible sleeve pin coupling | GB/T 4323-2017 |
| GB/T 5014-2003 | Flexible pin coupling | GB/T 5014-2017 |
| GB/T 5015-2003 | Flexible pin-tooth coupling | GB/T 5015-2017 |
| GB/T 5272-2002 | Plum-blossom flexible coupling | GB/T 5272-2017 |
| GB/T 5843-2003 | Flange coupling | GB/T 5843-2025 |
| GB/T 5844-2002 | Tyre coupling | GB/T 5844-2025 |
| GB/T 6069-2002 | Roller chain coupling | GB/T 6069-2017 |
| GB/T 7549-1987 | Ball-cage synchronous universal coupling — types, parameters, dimensions | GB/T 7549-2008 |
| GB/T 7550-1987 | Ball-cage synchronous universal coupling — test methods | GB/T 7550-2008 |
One caveat on that right-hand column. The registry prints no "replaced by" field; it lists each edition as a separate record. The mapping above is by identical title and the same document number, which is how the registry itself organises them — it is not a statement the registry makes in words.
The four 2025 revisions are the ones to check on any current drawing:
| Standard | Title | Issued | In force since |
|---|---|---|---|
| GB/T 5843-2025 | Flange coupling | 28 March 2025 | 1 October 2025 |
| GB/T 5844-2025 | Tyre coupling | 28 March 2025 | 1 October 2025 |
| GB/T 12922-2025 | Flexible damping reed coupling | 30 June 2025 | 1 January 2026 |
| GB/T 14653-2025 | Flexible rod coupling | 30 June 2025 | 1 January 2026 |
All four are already in force today. If a quotation is written against the 2003 or 2008 edition of any of them, the document it cites was abolished before the quotation was issued — which is a question worth asking, independent of the price.
The forty current records fall into four groups. Grouping is ours; the state, issue dates and titles are the registry's.
| Standard | Title | In force since |
|---|---|---|
| GB/T 3507-2008 | Nominal torque series for couplings | 1 May 2009 |
| GB/T 3852-2017 | Coupling shaft holes, connection types and dimensions | 1 December 2017 |
| GB/T 3931-2010 | Couplings — terminology | 1 October 2011 |
| GB/T 12458-2017 | Couplings — classification | 1 December 2017 |
| GB/T 39545.4-2023 | Components for enclosed gear drives — part 4: balance grades for flexible couplings | 1 December 2023 |
| Standard | Title | In force since |
|---|---|---|
| GB/T 26103.1-2010 | Type GII CL crown-tooth coupling | 1 October 2011 |
| GB/T 26103.3-2010 | Type GCLD crown-tooth coupling | 1 October 2011 |
| GB/T 26103.4-2010 | Type NGCL crown-tooth coupling with brake wheel | 1 October 2011 |
| GB/T 26103.5-2010 | Type NGCLZ crown-tooth coupling with brake wheel | 1 October 2011 |
| GB/T 26104-2010 | Type WGJ crown-tooth coupling with intermediate shaft | 1 October 2011 |
| GB/T 29027-2012 | Large crown-tooth coupling | 1 October 2013 |
| GB/T 33506-2017 | Crown-tooth coupling for cold rolling mill main drives | 1 September 2017 |
| GB/T 33516-2017 | Type LZG crown-tooth coupling | 1 June 2017 |
| GB/T 26660-2011 | Type SWC large integral fork cross-shaft universal coupling | 1 March 2012 |
| GB/T 26661-2011 | Type SWP large cross-shaft universal coupling | 1 March 2012 |
| GB/T 28700-2012 | Type SWZ universal coupling with integral bearing housing | 1 March 2013 |
| GB/T 29028-2012 | Type SWZ large universal coupling with integral bearing housing | 1 October 2013 |
| GB/T 33507-2017 | Cross-shaft universal coupling for cold rolling mill main drives | 1 September 2017 |
| GB/T 34027-2017 | Cross-shaft universal coupling for hot continuous rolling main drives | 1 February 2018 |
| Standard | Title | In force since |
|---|---|---|
| GB/T 10614-2008 | Core-type flexible coupling | 1 May 2009 |
| GB/T 2496-2008 | Flexible ring coupling | 15 December 2008 |
| GB/T 4323-2017 | Flexible sleeve pin coupling | 1 December 2017 |
| GB/T 5014-2017 | Flexible pin coupling | 1 December 2017 |
| GB/T 5015-2017 | Flexible pin-tooth coupling | 1 December 2017 |
| GB/T 5272-2017 | Plum-blossom flexible coupling | 1 December 2017 |
| GB/T 12922-2025 | Flexible damping reed coupling | 1 January 2026 |
| GB/T 14653-2025 | Flexible rod coupling | 1 January 2026 |
| GB/T 38768-2020 | Highly elastic rubber coupling — test requirements and methods | 1 November 2020 |
| GB/T 35147-2017 | Petroleum and natural gas industries — flexible couplings for mechanical power transmission — general purpose | 1 July 2018 |
| Standard | Title | In force since |
|---|---|---|
| GB/T 5843-2025 | Flange coupling | 1 October 2025 |
| GB/T 5844-2025 | Tyre coupling | 1 October 2025 |
| GB/T 6069-2017 | Roller chain coupling | 1 December 2017 |
| GB/T 26663-2011 | Large hydraulic safety coupling | 1 March 2012 |
| GB/T 26664-2011 | Metal wire-spring coupling | 1 March 2012 |
| GB/T 38601-2020 | Power take-off coupling — general technical requirements | 1 October 2020 |
| GB/T 38763-2020 | Permanent magnet coupling — general specification | 1 November 2020 |
| GB/T 38965-2020 | Diaphragm coupling — test requirements | 1 February 2021 |
| GB/T 38392-2019 | Metallurgical equipment — couplings — test methods, inspection rules and acceptance | 1 July 2020 |
| GB/T 7549-2008 | Ball-cage synchronous universal coupling | 1 May 2009 |
| GB/T 7550-2008 | Ball-cage synchronous universal coupling — test methods | 1 May 2009 |
One record is not yet in force: GB/T 48160-2026, issued 28 August 2026 and effective 1 March 2027, for threaded and sealed couplings in aerospace fluid systems. Read that title carefully — it is a fluid-line coupling, not a shaft coupling. It appears in this family only because the Chinese term overlaps. If your part is a shaft coupling, this document does not apply to it, and a supplier who cites it to you is citing something else.
If the question behind the coupling question is documentation rather than the part, read GB, GB/T and GB/Z: what a standard code means first, then how to read an inspection report. For parts that share the same ordering problem — a standard number that has to match the drawing — see fasteners and machining tolerances.
No. The registry returns 61 records for the coupling query and all 61 are recommended (GB/T). There is no mandatory (GB) record in this family, so a GB/T number describes a voluntary specification rather than a certification.
Four: GB/T 5843-2025 (flange coupling) and GB/T 5844-2025 (tyre coupling), both effective 1 October 2025, and GB/T 12922-2025 (flexible damping reed coupling) and GB/T 14653-2025 (flexible rod coupling), both effective 1 January 2026.
No. The registry lists GB/T 5843-2003 as abolished and GB/T 5843-2025 as current, effective 1 October 2025. A drawing that still cites the 2003 edition names a withdrawn document.
Sixty-one records in the registry query, of which 40 are current, 20 abolished and 1 issued but not yet in force. The single future record is GB/T 48160-2026, effective 1 March 2027, and it covers aerospace fluid-system threaded and sealed couplings rather than shaft couplings.
No. It records documents and their status only — no tolerances, no materials, no test results and no conformity mark. Compliance has to be evidenced by the supplier's inspection records against the document you named.
All sources retrieved 9 November 2026. This page is an independent reading of the sources listed; the official pages themselves are the specification.
| Fact used on this page | Source |
|---|---|
| S1 — Coupling query returns 61 records with no shortfall; 40 current, 20 abolished, 1 not yet in force; all 61 recommended, none mandatory; issue dates, effective dates and titles for every record cited above | National Standards Information Public Service Platform, Standardization Administration of China https://std.samr.gov.cn/gb/search/gbQueryPage?searchText=%E8%81%94%E8%BD%B4%E5%99%A8&pageNumber=1&pageSize=10 |