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Plain bearings - Copper alloy bushes - Dimensions and tolerances
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Plain bearing -- Copper alloy bushes
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Basic data
| Standard ID | GB/T 18324-2025 (GB/T18324-2025) |
| Description (Translated English) | Plain bearings - Copper alloy bushes - Dimensions and tolerances |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | J12 |
| Classification of International Standard | 21.100.10 |
| Word Count Estimation | 14,170 |
| Date of Issue | 2025-10-31 |
| Date of Implementation | 2026-02-01 |
| Older Standard (superseded by this standard) | GB/T 18324-2001 |
| Issuing agency(ies) | State Administration for Market Regulation and Standardization Administration of China |
GB/T 18324-2025: Plain bearings - Copper alloy bushes - Dimensions and tolerances
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 21.100.10
CCSJ12
National Standards of the People's Republic of China
Replaces GB/T 18324-2001
Dimensions and tolerances of copper alloy bushings for sliding bearings
(ISO 4379.2024, MOD)
Published on 2025-10-31
Implemented on February 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4 Symbols 1
5.Dimensions and Tolerances 2
6.Materials 7.
7 Surface roughness 8
8.Structure 8
9.Quality Assurance 8.
10 Mark 8
References 9
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document replaces GB/T 18324-2001 "Sliding Bearings - Copper Alloy Bushings". Compared with GB/T 18324-2001, the only differences are in the structural design.
Aside from integration and editorial changes, the main technical changes are as follows.
---Added symbols (see Chapter 4);
---Added dimensional and tolerance requirements outside the dimensional range (see Chapter 5);
---The tolerance requirements for the inner diameter have been changed (see Table 4);
--- Surface roughness has been changed (see Chapter 7, Chapter 5 in the.2001 edition).
This document is modified to adopt ISO 4379.2024 "Dimensions and tolerances of copper alloy bushings for sliding bearings".
The technical differences between this document and ISO 4379.2024 are as follows.
--- Replace ISO 2768-1 with GB/T 1804 (see Chapter 8);
---Change the tolerance of d1 from "E6" to "E7".
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Technical Committee on Standardization of Sliding Bearings (SAC/TC236).
This document was drafted by. China Machinery Productivity Promotion Center Co., Ltd., Zhejiang Changsheng Sliding Bearing Co., Ltd., and Zhejiang Zhongda Precision Machinery Co., Ltd.
Components Co., Ltd., Shuangfei Oilless Bearing Group Co., Ltd., Zhejiang Kaiti Sliding Bearing Co., Ltd., Yantai Dafeng Bearing Co., Ltd.
Limited Liability Company, Wuhan Xiongchi Electromechanical Equipment Co., Ltd., Hangzhou Qianjing Technology Co., Ltd., Zhejiang Jingli Bearing Technology Co., Ltd., Huayi Bearing
Technology (Jiangsu) Co., Ltd., Shandong Fuma Bearing Co., Ltd., Shandong Senji Bearing Technology Co., Ltd., Heshan Jinzhou Copper Industry Co., Ltd.
company.
This document is subject to interpretation by the National Technical Committee on Standardization of Sliding Bearings.
The release history of this document and the document it replaces is as follows.
GB/T 37169-2001 was first published in.2001;
---This is the first revision.
Dimensions and tolerances of copper alloy bushings for sliding bearings
1 Scope
This document specifies the dimensions and tolerances of cylindrical bushings and flange bushings with an inner diameter d1 of 6 mm to.200 mm.
This document applies to single-layer copper alloy bushings with or without oil holes and oil grooves as sliding bearings.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 1804 General Tolerances - Tolerances for linear and angular dimensions without specified tolerances (GB/T 1804-2000, eqv ISO 2768-1)
1989)
ISO 4382-1 Cast copper alloys for single-layer and multi-layer sliding bearings
ISO 4382-2 Copper alloys for sliding bearings – Part 2.Forged copper alloys for single-layer bearings
ISO 21920-1.2021 Product Geometry Specification (GPS) - Surface Texture. Profile Method - Part 1.Representation of Surface Texture
texture]
3 Terms and Definitions
This document does not contain any terms or definitions that need to be defined.
4 symbols
The symbols and units used in this document are shown in Table 1.
Table 1 Symbols and Units
Symbolic parameter description unit
b1 Bushing width (mm)
b2 Flange width (mm)
c1 inner chamfer mm
c2 outer chamfer mm
d Shaft diameter (mm)
d1 inner diameter mm
d2 Outer diameter (mm)
...
