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Rolling bearings - Tapered rollers
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Basic data
| Standard ID | GB/T 25767-2025 (GB/T25767-2025) |
| Description (Translated English) | Rolling bearings - Tapered rollers |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | J11 |
| Classification of International Standard | 21.100.20 |
| Word Count Estimation | 18,153 |
| Date of Issue | 2025-10-31 |
| Date of Implementation | 2026-02-01 |
| Older Standard (superseded by this standard) | GB/T 25767-2010 |
| Issuing agency(ies) | State Administration for Market Regulation and Standardization Administration of China |
GB/T 25767-2025: Rolling bearings - Tapered rollers
---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 21.100.20
CCSJ11
National Standards of the People's Republic of China
Replaces GB/T 25767-2010
Rolling bearing tapered roller
Published on 2025-10-31
Implemented on February 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
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 25767-2010 "Rolling Bearings - Tapered Rollers". Compared with GB/T 25767-2010, the only changes are structural adjustments.
Aside from editorial changes, the main technical changes are as follows.
a) The application of product geometric technical specifications has been increased (see Table 1 and Figure 1);
b) The geometric tolerances and surface roughness values for the tapered roller section have been changed (see Table 2; Tables 1 and 2 in the.2010 edition);
c) Added requirements for tapered rollers with a diameter of 80mm < Dw ≤ 150mm (see Tables 2 and 3); added tapered roller length tolerances (see...).
Table 3);
d) Requirements for dents and impacts on the working surfaces of tapered rollers, along with their detection methods and inspection rules, have been added (see 6.5.2, 7.5.4, and 8.2);
e) Added magnetic particle and eddy current testing for tapered rollers (see 7.5.2 and 7.5.3);
f) The tolerance grades for tapered rollers that can be omitted from the marking have been changed (see 9.1,.2010 edition of 9.1);
g) The method of measuring roundness error using a 60° V-block has been removed (see A.2 of Appendix A,.2010 edition).
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 Rolling Bearings (SAC/TC98).
This document was drafted by. Luoyang Bearing Research Institute Co., Ltd., Jiangsu Lixing General Steel Ball Co., Ltd., and Ningbo Haiyate Roller Co., Ltd.
Limited Liability Company, Gansu Hailin Zhongke Technology Co., Ltd., Zhejiang Wuzhou Xinchun Group Co., Ltd., Luoyang Rencheng Bearing Parts Co., Ltd.
Limited Liability Company, Henan Weichuang Bearing Precision Technology Co., Ltd., Zhejiang Chengben Bearing Roller Co., Ltd., Changzhou Guangyang Bearing Co., Ltd.
Shanghai Renben Group Co., Ltd.
The main drafters of this document are. Li Feixue, Du Xiaoyu, Sha Xiaojian, Cheng Su, Shi Yi, Shi Yingying, Ye Huiqing, Guo Haoqing, Geng Zhongdian, and Zhang Song.
Zhang Shuwu.
This document was first published in.2010, and this is its first revision.
Rolling bearing tapered roller
1 Scope
This document specifies the dimensions, technical requirements, inspection rules, marking, packaging, and storage of tapered rollers (hereinafter referred to as "rollers"), and describes...
The corresponding detection methods.
This document applies to the manufacture of rollers.
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 1182-2018 Product Geometric Specification (GPS) - Geometric Tolerances. Shape, Orientation, Position and Runout Tolerances
GB/T 3203-2016 Carburized Bearing Steel
GB/T 4199-2003 Definition of Tolerances for Rolling Bearings
GB/T 4249-2018 Product Geometry Specification (GPS) - Basic Concepts, Principles and Rules
GB/T 4380-2004 Evaluation of roundness error using two-point and three-point methods
GB/T 6930-2024 Rolling Bearings Vocabulary
GB/T 8597-2013 Rust-proof packaging for rolling bearings
GB/T 18254-2016 High Carbon Chromium Bearing Steel
GB/T 24606-2021 Non-destructive testing of rolling bearings - Magnetic particle testing
GB/T 24608-2023 Inspection Rules for Rolling Bearings and Their Commodity Parts
GB/T 30565-2025 General Principles of Eddy Current Testing in Nondestructive Testing
GB/T 32324-2015 Methods for measuring and evaluating the roundness and waviness errors of rolling bearings
GB/T 34891-2017 Technical conditions for heat treatment of high carbon chromium bearing steel parts for rolling bearings
GB/T 38762.1-2020 Product Geometric Specification (GPS) - Dimensional Tolerances - Part 1.Linear Dimensions
JB/T 6641-2017 Residual Magnetism of Rolling Bearings and Its Evaluation Method
JB/T 7051-2006 Method for measuring and evaluating the surface roughness of rolling bearing parts
JB/T 8881-2020 Technical Conditions for Heat Treatment of Carburized Bearing Steel Parts for Rolling Bearings
3 Terms and Definitions
The terms and definitions defined in GB/T 4199-2003 and GB/T 6930-2024, as well as the following terms and definitions, apply to this document.
3.1
Roller nominal diameter
Used to identify the diameter of a roller; the maximum theoretical diameter in the radial plane at the imaginary sharp corner of the large end of the tapered roller.
3.2
Single roller diameter
The distance between two parallel tangents that are tangent to the actual surface of the roller in a plane perpendicular to the roller axis.
...
