GB/T 23895-2009 English PDF

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GB/T 23895-2009: Plain bearings -- Quality assurance of thin-walled half bearings -- Selective assembly of bearings to achieve a narrow clearance
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23895-2009	234	Add to Cart	3 days	Plain bearings -- Quality assurance of thin-walled half bearings -- Selective assembly of bearings to achieve a narrow clearance	Valid

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Basic data

Standard ID: GB/T 23895-2009 (GB/T23895-2009)
Description (Translated English): Plain bearings -- Quality assurance of thin-walled half bearings -- Selective assembly of bearings to achieve a narrow clearance
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J12
Classification of International Standard: 21.100.10
Word Count Estimation: 12,133
Date of Issue: 2009-05-26
Date of Implementation: 2009-12-01
Quoted Standard: GB/T 7308-2008; GB/T 2889.1-2008
Adopted Standard: ISO 13778-1999, IDT
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.7 (Total No.147)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the sliding bearing (in line with GB/T 7308) Selection assembly.

GB/T 23895-2009: Plain bearings -- Quality assurance of thin-walled half bearings -- Selective assembly of bearings to achieve a narrow clearance

---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.
Plain bearings. Quality assurance of thin-walled half bearings. Selective assembly of bearings to achieve a narrow clearance ICS 21.100.10 J12 National Standards of People's Republic of China GB/T 23895-2009/ISO 13778.1999 Quality assurance of thin-walled plain bearing bush Narrow the range of choices assembly bearing clearance (ISO 13778.1999, IDT) Posted 2009-05-26 2009-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is equivalent to using ISO 13778.1999 "Quality assurance bush bearing thin wall bearing gap to narrow the scope of the selection means With "(in English). This standard is equivalent translation ISO 13778.1999. For ease of use, this standard made the following editorial changes. --- "This International Standard" be replaced by "this standard"; "." --- With a decimal point instead of a comma as the decimal point, ""; --- Delete international standards foreword. The standard proposed by China Machinery Industry Federation. This standard sliding bearing by the National Standardization Technical Committee (SAC/TC236) centralized. This standard was drafted. the machine Productivity Promotion Center, Chengdu Railway Parts Co., Ltd. Trinity strong. This standard by the National Standardization Technical Committee Secretariat slide bearing responsible for the interpretation. This standard is the first release. GB/T 23895-2009/ISO 13778.1999 Quality assurance of thin-walled plain bearing bush Narrow the range of choices assembly bearing clearance

1 Scope

This standard specifies the sliding bearings (in line with GB/T 7308) Select the assembly. The diameter of the bearing clearance is determined by the thickness of the housing bore diameter and the journal diameter and two bush. These parts of tolerance "overlay" general Will reach 50μm ~ 60μm. According to the development and practice of modern engines, in order to improve engine performance, the need to narrow tolerances "overlay" Gap range formed. This standard proposes various options and recommendations in order to obtain such a small gap range to choose the assembly.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 7308-2008 bearing flange or flangeless thin-walled bush tolerances, structural elements and test methods (ISO 3548.1999, IDT) GB/T 2889.1-2008 Plain bearings - Terms, definitions and classification - Part 1. Design, bearing materials and their properties (ISO 4378-1.1997, IDT)

3 Terms and Definitions

GB/T terminology and the following terms and definitions established 2889.1 apply to this standard. 3.1 C, DH bearing bore diameter minus twice the difference between the thickness of the pad and the journal diameter DJ after S3, namely. C = DH- (2S3 + DJ) 3.2 DH, when not installed in the bush counterparts in vertical plane direction was measured housing bore diameter. 3.3 S3, away from their counterparts at 90o (top) measured bearing wall thickness. Note. If the measurement two points measured using both among the larger value. 3.4 DJ, in the finishing position of the maximum journal diameter measured diameter. 3.5 Drawing on a predetermined range and lower limits between. 3.6 Install the bearing housing bore through the expansion of surplus caused. GB/T 23895-2009/ISO 13778.1999 ......

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