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GB/T 1151-2023 English PDF

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GB/T 1151-2023: Internal combustion engines - Main and connecting rod bearings - Specifications
Status: Valid

GB/T 1151: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 1151-2023English319 Add to Cart 3 days [Need to translate] Internal combustion engines - Main and connecting rod bearings - Specifications Valid GB/T 1151-2023
GB/T 1151-2012English519 Add to Cart 3 days [Need to translate] Internal combustion engines -- Main and connecting rod bearings -- Specifications Obsolete GB/T 1151-2012
GB/T 1151-1993English479 Add to Cart 4 days [Need to translate] Internal combustion engines. Main and connecting bearings. Specification Obsolete GB/T 1151-1993

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Basic data

Standard ID GB/T 1151-2023 (GB/T1151-2023)
Description (Translated English) Internal combustion engines - Main and connecting rod bearings - Specifications
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J92
Classification of International Standard 27.020
Word Count Estimation 15,174
Date of Issue 2023-05-23
Date of Implementation 2023-12-01
Older Standard (superseded by this standard) GB/T 1151-2012
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 1151-2023: Internal combustion engines - Main and connecting rod bearings - Specifications

---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 27:020 CCSJ92 National Standards of People's Republic of China Replacing GB/T 1151-2012 Specifications for main bearing bushes and connecting rod bearing bushes of internal combustion engines Released on 2023-05-23 2023-12-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

table of contents

Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Structure and size 2 5 Technical requirements 3 6 Inspection method 7 7 Inspection rules 9 8 Labeling, packaging, transportation and storage 10 Fig: 1 Schematic diagram of bearing pad structure 2 Table 1 Common dimension symbols of bearing bushes 2 Table 2 Bearing Wall Thickness Tolerance, Width Tolerance, Protrusion Tolerance and Surface Roughness4 Table 3 Alloy thickness of bearing pad and tolerance of alloy thickness on the same bearing pad5 Table 4 Fitting degree of the back side of the bearing shell 5 Table 5 Bearing bush free spring tensor 6 Table 6 Symmetry of oil groove and oil hole 6 Table 7 Tolerance of Wall Thickness of Oil Tank Bottom 6 Table 8 Scratch 7 Table 9 Dent 7 Table 10 Hardness testing methods of steel back and alloy 8 Table 11 Inspection Item 9

foreword

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 1151-2012 "Technical Conditions for Internal Combustion Engine Main Bearings and Connecting Rod Bearings", and is consistent with GB/T 1151-2012 In addition to structural adjustments and editorial changes, the main technical changes are as follows: a) Changed the material requirements (see 5:2, 5:2 of the:2012 edition); b) Change the hardness requirements (see 5:3, 5:2:1 of the:2012 edition); c) Added metallographic structure requirements (see 5:4); d) Changed the dimensional tolerances and shape and position tolerances (see 5:5, 5:3 of the:2012 edition); e) Changed the surface roughness requirements (see 5:6, 5:4 of the:2012 edition); f) Changed the bonding strength requirements (see 5:7, 5:5 of the:2012 edition); g) Changed the appearance quality requirements (see 5:8, 5:6 of the:2012 edition); h) Increased cleanliness requirements (see 5:9); i) The inspection method has been changed (see Chapter 6, Chapter 6 of the:2012 edition); j) The inspection rules have been changed (see Chapter 7, Chapter 7 of the:2012 edition); k) The marking, packaging, transportation and storage have been changed (see Chapter 8, Chapter 8 of the:2012 edition): Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed by China Machinery Industry Federation: This document is under the jurisdiction of the National Internal Combustion Engine Standardization Technical Committee (SAC/TC177): This document is drafted by: Kunming Yunnei Power Co:, Ltd:, Shandong Yunnei Power Co:, Ltd:, Guangxi Yuchai Machinery Co:, Ltd: Co:, Ltd:, Shanghai Motor Vehicle Inspection and Certification Technology Research Center Co:, Ltd:, Yantai Dafeng Bearing Co:, Ltd:, Kunming University of Science and Technology: The main drafters of this document: Chen Liqiong, Yuan Honglei, Sun Ridong, Guo Hua, Lu Yintao, Qin Xingnian, Deng Wei, Wang Hailiang, Li Sha, Lei Jilin, Zhang Jin, Yao Guoguo, Liu Jianyong, Su Shengshan, Qin Liming: This document was first published in 1982, revised for the first time in:1993, revised for the second time in:2012, and this is the third revision: Specifications for main bearing bushes and connecting rod bearing bushes of internal combustion engines

1 Scope

This document specifies the structure and dimensions, technical requirements, inspection methods, inspection rules and signs, package Packing, transportation and storage: This document is applicable to reciprocating piston internal combustion engines (except for low-speed engines) with flangeless, thin-walled main Rod bearing bush (hereinafter referred to as bearing bush):

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB/T 191 Packaging, storage and transportation icon marks GB/T 231:1 Brinell hardness test for metallic materials - Part 1: Test method GB/T 1800:1-2020 Product Geometric Specifications (GPS) Linear Dimensional Tolerance ISO Code System Part 1: Tolerance, deviation Basis of difference and fit GB/T 2828:1 Counting sampling inspection procedure Part 1: Batch-by-batch inspection sampling plan retrieved by acceptance quality limit (AQL) GB/T 2829 Periodic inspection counting sampling procedure and table (applicable to the inspection of process stability) GB/T 2889:1-2020 Sliding bearing terms, definitions, classifications and symbols Part 1: Structure, bearing materials and their properties GB/T 3821 Cleanliness limit and determination method of small and medium power internal combustion engines GB/T 4340:1 Vickers hardness test for metallic materials - Part 1: Test method GB/T 4955 Coating Thickness Measurement of Metal Coatings - Anodic Dissolution Coulometric Method GB/T 4956 Magnetic method for measuring the thickness of non-magnetic coatings on magnetic substrates GB/T 6388 Transport packaging receipt and delivery marks GB/T 6462 Microscopic method for measuring the thickness of metal and oxide coatings GB/T 10610 Product Geometric Specifications (GPS) Surface Structure Profiling Method for Assessing Surface Structure Rules and Methods GB/T 12613:4 Rolled sleeves for sliding bearings - Part 4: Materials GB/T 12613:7 Rolled sleeves for sliding bearings - Part 7: Measurement of wall thickness of thin-walled sleeves GB/T 18326 Sliding bearings Multi-layer materials for thin-walled sliding bearings GB/T 27939 Quality control techniques and inspections for geometrical and material quality characteristics of sliding bearings GB/T 30512 Requirements for Prohibited Substances in Automobiles JB/T 9749:1 Internal Combustion Engine Bearings Part 1: Metallographic Examination of Cast Copper-Lead Alloy Bearings JB/T 9749:2 Internal Combustion Engine Bearings Part 2: Specifications for Inspection of Bearings with Precision Electroplated Antifriction Layer QC/T 281 Metallographic standard of copper-lead alloy for automobile engine bearing TB/T 2958 Sliding Bearing Thin-walled Bearing Circumference Inspection

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