JJG 471-2003 English PDF

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JJG 471-2003: Verification Regulation of Bearing Inside and Outside Diameter Testers
Status: Valid

JJG 471: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 471-2003	389	Add to Cart	3 days	Verification Regulation of Bearing Inside and Outside Diameter Testers	Valid
JJG 471-1986	519	Add to Cart	4 days	Verification Regulation of Bearing Inside and Outside Diameter Tester	Obsolete

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JJG 818   JJG 517   JJG 0061   JJG 658   JJG 601   JJG 473   

Basic data

Standard ID: JJG 471-2003 (JJG471-2003)
Description (Translated English): Verification Regulation of Bearing Inside and Outside Diameter Testers
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A52
Word Count Estimation: 15,171
Date of Issue: 2003-09-23
Date of Implementation: 2004-03-23
Older Standard (superseded by this standard): JJG 471-1986
Quoted Standard: JJF 1001-1998; JJF 1059-1999; GB 307.2-1995; JB/T 5307-1991; JB/T 5310-1991; JJG 118-1996; JJG 39-1990; JJF 1094-2002; JJG 34-1996; JJG 396-2002
Regulation (derived from): State Administration of Quality Supervision, Inspection and Quarantine Notice 2003 No. 106
Issuing agency(ies): State Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to indexing is 0. 5��m and 1��m bearings inside, outside diameter tester (the short, diameter instrument, the same below) of the initial verification, testing and use of subsequent testing.

JJG 471-2003: Verification Regulation of Bearing Inside and Outside Diameter Testers

---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.
Verification Regulation of Bearing Inside and Outside Diameter Testers National Metrology Verification Regulations of the People's Republic Bearing inner and outer diameter checker Released on.2003-09-23 2004-03-23 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Replacing JJG 471-1986 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on September 23,.2003, and It will take effect on March 23,.2004. Focal Point. National Geometric Quantity Engineering Measurement Technology Committee Drafting unit. Shandong Institute of Metrology This regulation entrusts the National Geometric Quantity Engineering Parametric Measurement Technical Committee to explain Drafters of this procedure. Xia Yuhong (Shandong Institute of Metrology) Zhang Hui (Shandong Institute of Metrology) Yu Zhishan (Shandong Institute of Metrology)

table of Contents

1 Scope (1) 2 Citations (1) 3 Overview (1) 4 Metrology performance requirements (1) 4.1 Inner diameter gauge force (1) 4.2 Surface roughness of the probe working surface (1) 4.3 Height difference between the measuring head and the positioning fulcrum relative to the working surface of the table (1) 4.4 Flatness of the work surface of the workbench (1) 4.5 indicator (2) 4.6 indication variability (3) 4.7 Maximum allowable error (3) 5 General technical requirements (3) 5.1 Appearance (3) 5.2 Interaction of various parts (3) 6 measuring instrument control (3) 6.1 Verification conditions (3) 6.2 Verification project (3) 6.3 Verification method (3) 6.4 Processing of verification results (5) 6.5 verification period (5) Appendix A Inner and outer diameter inspection instruments for railway departments (6) Appendix B Uncertainty analysis of the results of the indication error verification (8) Appendix C Format of verification certificate and verification result page (10) Bearing internal and external diameter inspection instrument verification procedures

1 Scope

This procedure is applicable to inner and outer diameter inspection instruments (referred to as inner and outer diameter instruments) with indexing values of 0.5μm and 1μm. First verification, subsequent verification and in-use inspection.

2 Citations

This specification refers to the following documents. JJF1001-1998 general measurement terms and definitions JJF1059-1999 Measurement Uncertainty Evaluation and Representation GB 307.2-1995 Principles and methods for measurement and inspection of rolling bearings JB/T 5307-1991 General technical requirements for rolling bearing measuring instruments Technical conditions for JB/T 5310-1991 rolling bearing internal (outer) diameter measuring instrument JJG 118-1996 torsion spring type comparator JJG 39-1990 mechanical comparator JJF1094-2002 measuring instrument characteristics evaluation JJG 34-1996 indicator JJG 396-2002 Inductance Micrometer When using this procedure, care should be taken to use the current valid version of the above cited documents.

3 Overview

The inner and outer diameter gauges are special instruments for measuring the inner and outer diameters of rolling bearings by comparison method. The basic shape is shown in Figure 1. And Figure 2. The inner diameter gauge can also be measured for outside diameter by the probe conversion device. The structure of the inner and outer diameter meters is mainly determined by the indicator, The measuring head, the positioning fulcrum (fixed probe, auxiliary probe) and the workbench are composed.

4 Metrological performance requirements

4.1 Inner diameter gauge force 4.1.1 Force range (0.1~3.5)N. 4.1.2 When the force is adjusted to 3N, the force measurement does not change within the 40μm measurement range of the indicator (torsion spring comparator). More than 0.9N. 4.1.3 The measurement force of the inner diameter meter for the outer diameter measurement is not more than 2N. 4.2 Surface roughness of the probe working surface The surface roughness Ra of each working face of the probe is not more than 0.1 μm. 4.3 Height difference between the measuring head and the positioning fulcrum relative to the working surface of the table The height difference between the measuring head and the positioning fulcrum relative to the working surface of the table is not more than 0.2 mm. 4.4 Flatness of the work surface of the workbench ......

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