Last updated: 14 October 2026.
Quick answer. China's register returns 441 bearing records, more than one search can page through. The plain-bearing family returns all 122; the rolling-bearing family caps at 196 of 238. No record in either is compulsory. Bearings are governed by recommended standards, so name the number and the year, never the number alone.
Bearings carry no compulsory GB standard: 122 plain-bearing and 196 rolling-bearing records are all recommended. Which numbers to name in a 2026 order.
Every standard number, title, status, nature, issue date and effective date on this page was read from the Chinese national standards register on 14 October 2026 and is listed at the end. This page reads the register's title and status metadata; it does not read standard bodies, and it states no dimensional, material or tolerance value.
A buyer writing a purchase order for bearings almost never names a Chinese standard, because the Western habit is to specify the bearing by an ISO or ABMA designation and leave the standard unstated. That works right up to the point where the Chinese factory's own quality document quotes a standard number, and the buyer has no way to tell whether the number is current, superseded, or one of nine sub-parts of a series.
This page covers what the register can actually settle: which numbers exist, whether they are in force or superseded, whether any of them is compulsory, and which of them changed in 2026.
The register's title search returns a reported total and then serves results page by page. When the served pages run out before the reported total, the difference is a shortfall, and any count taken from the served pages is a sample rather than a family.
| Search term | Reported total | Records retrieved | Shortfall | Status distribution (retrieved) | Nature (retrieved) |
|---|---|---|---|---|---|
| 轴承 | 441 | 200 | 241 | Current 122, superseded 76, pending 2 | Recommended 199, guidance document 1 |
| 滑动轴承 (plain bearings) | 122 | 122 | 0 | Current 84, superseded 37, pending 1 | Recommended 122 |
| 滚动轴承 (rolling bearings) | 238 | 196 | 42 | Current 103, superseded 88, pending 5 | Recommended 196 |
The generic Chinese term 轴承 is the wrong search to count with: it reported 441 records and stopped serving after 200, leaving a shortfall of 241. Splitting the family fixes half the problem. The plain-bearing search returned its whole family, 122 of 122. The rolling-bearing search reported 238 and stopped at 196, so a shortfall of 42 remains there and the rolling-bearing figures quoted on this page are figures about the 196 records retrieved, not about all 238.
The mixed status distribution is the second thing worth noticing. Between a quarter and a third of every family retrieved is superseded. A factory quoting a number from an old drawing may be quoting something formally withdrawn.
Chinese standards carry a nature field: compulsory or recommended (with guidance documents as a third category). The result across all three searches is the same, and it is the finding this page exists to state.
| Family | Records examined | Compulsory records |
|---|---|---|
| 轴承 (all, as retrieved) | 200 | 0 |
| 滑动轴承 (complete family) | 122 | 0 |
| 滚动轴承 (as retrieved) | 196 | 0 |
Not one record is compulsory. The same null result turns up on fittings, on springs and on powder-metallurgy parts, and it is a property of how the register classifies components: compulsory standards cluster around safety, health and consumer protection, not around a bearing. The practical consequence for a buyer is that "GB compliance" is not a test a bearing can pass or fail. The standard number in a quality document is a reference point, not a legal requirement.
Because the plain-bearing search returned its whole family, it is the only one of the three that can be classified without a sample caveat. The 122 records group as follows, counting each record once under the first group its title matches.
| Group | Records | What the title says |
|---|---|---|
| Materials and coatings | 39 | Alloys, multilayer materials, self-lubricating and solid-lubricant bearings, DLC coatings |
| Calculation and design | 19 | Fluid-film and static-pressure bearing calculation, thrust pad calculation and permissible values |
| Quality assurance, inspection and SPC | 19 | Statistical process control, sample-type quality assurance, wound-bush bore and outside-diameter inspection |
| Bushes, shells and washers | 16 | Wound bushes, thin-wall shells, thrust washers, wall-thickness measurement |
| Terms, definitions and symbols | 11 | Terminology, classification and symbol series |
| Test and fatigue methods | 7 | Bearing fatigue, compression testing of bearing materials, load-capacity testing |
| Dimensional and tolerance specification | 5 | Types, dimensions and tolerances |
| Housed, flanged and application-specific | 4 | Housed bearings, marine diesel engine bearings, automotive crankshaft applications |
| Powder-metallurgy plain bearings | 2 | Technical conditions for powder-metallurgy bearings, 1981 and its 2012 replacement |
| Total | 122 |
Two of these groups matter more than their size suggests. The materials group is the largest single block at 39 records, which is where a buyer sourcing a polymer-lined or solid-lubricant bush will find the numbers that apply. The quality-assurance group is the one that would be quoted back at a buyer during an audit, and it is entirely made of recommended standards.
Two dated hooks matter if the purchase order runs into 2026 or 2027.
| Standard | Title | Status | Issued | Effective |
|---|---|---|---|---|
| GB/T 47254-2026 | 滑动轴承 润滑条件下DLC涂层部件的动态附着力测试方法 | In force | 2026-02-27 | 2026-06-01 |
| GB/T 2889.7-2026 | 滑动轴承 术语、定义、分类和符号 第7部分：液体和气体静压轴承 | In force | 2026-02-27 | 2026-06-01 |
| GB/T 27557-2026 | 滚动轴承 直线运动滚动支承 代号方法 | Pending | 2026-07-30 | 2026-11-01 |
| GB/T 27558-2026 | 滚动轴承 直线运动滚动支承 分类 | Pending | 2026-07-30 | 2026-11-01 |
| GB/T 29717-2026 | 滚动轴承 风力发电机组偏航、变桨轴承 | Pending | 2026-07-30 | 2026-11-01 |
| GB/T 29718-2026 | 滚动轴承 风力发电机组主轴轴承 | Pending | 2026-09-28 | 2027-01-01 |
| GB/T 48129-2026 | 滚动轴承 超声检测方法 | Pending | 2026-09-28 | 2027-01-01 |
The DLC coating adhesion method is the newest plain-bearing standard actually in force, having taken effect on 1 June 2026; a supplier claiming coating adhesion testing should be asked which method it used. The two wind-turbine bearing standards issued in 2026 replace 2013 versions and do not take effect until 2027, which is the window where a 2013 number and a 2026 number are both defensible and neither is obviously wrong. Naming the year is what removes the ambiguity.
Related pages on this site that settle the neighbouring questions: the GB standards overview, how ASTM, CE and UL marks differ from GB, tolerances, materials, quality control during production, springs as a comparable component family, and CNC machining.
No. Across the three searches run on 14 October 2026 — the generic 轴承 search, the complete 122-record 滑动轴承 family and the 196 retrieved 滚动轴承 records — not one record carries compulsory nature. Bearing standards in the register are recommended standards or, in one case, a guidance document.
Three searches give three different answers, and only one is a family count. The generic 轴承 search reported 441 records and served 200 before stopping. The 滑动轴承 search reported 122 and served all 122. The 滚动轴承 search reported 238 and served 196. Only the 122 is complete.
Among plain bearings, GB/T 47254-2026 on dynamic adhesion testing of DLC-coated components, issued 2026-02-27 and in force since 2026-06-01, and GB/T 2889.7-2026 on terms and symbols for liquid and gas static-pressure bearings, issued on the same date and in force on the same date.
Superseded records are a large share of every family retrieved: 76 of 200 in the generic search, 37 of 122 in the plain-bearing family and 88 of 196 in the rolling-bearing records. A number quoted from an older drawing or an older supplier document is therefore often a withdrawn edition, which is why the year matters as much as the number.
Not yet. GB/T 29717-2026 for yaw and pitch bearings and GB/T 29718-2026 for main-shaft bearings, together with GB/T 27557-2026 and GB/T 27558-2026 for linear-motion rolling bearings, were issued in 2026 and are pending, with effective dates between 1 November 2026 and 1 January 2027.
All sources retrieved 14 October 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 — Chinese national standards register, title search on 轴承: reported total 441, records retrieved 200, shortfall 241; retrieved status distribution current 122 / superseded 76 / pending 2; nature distribution recommended 199 / guidance document 1 | State Administration for Market Regulation, national standards register; retrieved 14 October 2026 https://std.samr.gov.cn/gb/search/gbQueryPage?searchText=轴承 |
| S2 — National standards register, title search on 滑动轴承: reported total 122, records retrieved 122, shortfall 0; status distribution current 84 / superseded 37 / pending 1; all 122 records recommended. This is the complete family classified on this page, including GB/T 2688 (powder-metallurgy bearing specification) in its superseded 1981 and in-force 2012 editions, GB/T 47254-2026, GB/T 2889.7-2026, and GB/T 41850.2-2026 | State Administration for Market Regulation, national standards register; retrieved 14 October 2026 https://std.samr.gov.cn/gb/search/gbQueryPage?searchText=滑动轴承 |
| S3 — National standards register, title search on 滚动轴承: reported total 238, records retrieved 196, shortfall 42; status distribution current 103 / superseded 88 / pending 5; all 196 records recommended, including GB/T 27557-2026, GB/T 27558-2026, GB/T 29717-2026, GB/T 29718-2026 and GB/T 48129-2026 | State Administration for Market Regulation, national standards register; retrieved 14 October 2026 https://std.samr.gov.cn/gb/search/gbQueryPage?searchText=滚动轴承 |
| S4 — GB/T 27557-2026 and GB/T 27558-2026 (linear-motion rolling bearings, code method and classification) issued 2026-07-30, effective 2026-11-01; GB/T 29718-2026 (wind turbine main-shaft bearings) issued 2026-09-28, effective 2027-01-01 | State Administration for Market Regulation, national standards register; retrieved 14 October 2026 https://std.samr.gov.cn/gb/search/gbQueryPage?searchText=滚动轴承 |
| S5 — The national standards register records standard number, title, nature, status, issue date and effective date. It does not serve the text of the standard body, so no dimensional, material or tolerance value is quoted on this page | State Administration for Market Regulation, national standards register; retrieved 14 October 2026 https://std.samr.gov.cn/ |