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JJG 885-2014 English PDF

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JJG 885-2014: Instruments for Measuring Rolling Bearing Width
Status: Valid

JJG 885: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 885-2014English419 Add to Cart 3 days [Need to translate] Instruments for Measuring Rolling Bearing Width Valid JJG 885-2014
JJG 885-1995English319 Add to Cart 3 days [Need to translate] Verification Regulation of Instruments for Measuring Rolling Bearing Width Obsolete JJG 885-1995

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Basic data

Standard ID JJG 885-2014 (JJG885-2014)
Description (Translated English) Instruments for Measuring Rolling Bearing Width
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A52
Word Count Estimation 18,136
Date of Issue 8/25/2014
Date of Implementation 2/25/2015
Older Standard (superseded by this standard) JJG 885-1995
Quoted Standard JJG 39; JJG 118
Regulation (derived from) People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine Notice 2014 (No. 95); AQSIQ Notice 2014 No. 95
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This Standard applies to division value not greater than 0.001mm Rolling width measuring instrument initial verification, subsequent verification and the use of checks.

JJG 885-2014: Instruments for Measuring Rolling Bearing Width

---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.
Instruments for Measuring Rolling Bearing Width State verification procedures People's Republic of China Rolling width measuring instrument Issued on. 2014-08-25 2015-02-25 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Rolling width measuring instrument verification regulation Width Replacing JJG 885-1995 NFP. National Engineering Geometrical Parameters Measurement Technology Committee The main drafting units. Shandong Institute of Metrology Luoyang LYC Bearing Co., Ltd. Participated in the drafting unit. Henan Institute of Metrology Dalian metrological verification tests Yantai Bearing Instrument Co., Ltd. This procedure works commissioned by the National geometric parameter measurement technology committee responsible for the interpretation The main drafters of this procedure. High Ran (Shandong Province Institute of Metrology) Zhang Jian (Shandong Province Institute of Metrology) Pang Huaqi (Luoyang LYC Bearing Co., Ltd.) Liu Dazhong (Shandong Province Institute of Metrology) Drafters participate. Fannai Yin (Henan Institute of Metrology) Wang Tao (Dalian metrological verification tests) Xu Qi (Yantai Bearing Instrument Co., Ltd.)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 Overview (1) 4 metering performance requirements (3) Force 4.1 (3) 4.2 supporting surface (point) of the surface roughness of the (3) Face flatness table 4.3 (3) 4.4 three-point difference in height between the support (3) 4.5 Indication variability (3) 4.6 Indication error (3) 5 General technical requirements (3) 5.1 Appearance (3) 5.2 Interaction of each part (3) 5.3 Indicator (3) 6 Control of measuring instruments (4) 6.1 Verification condition (4) 6.2 test project and the main test equipment (4) 6.3 Verification Methods (5) Processing 6.4 Verification Results (6) 6.5 test cycle (6) Appendix A calibration certificate/test results in the notice page and format (7) Appendix B shows the measurement error Evaluation of Uncertainty (11)

Introduction

JJF1001-2011 "common measurement terms and definitions", JJF1002-2010 "national verification procedures to prepare Rules "and JJF1130-2005" geometric measurement equipment calibration Uncertainty Evaluation Guide "constitute support Basic series specification revision procedures. The procedures in place JJG 885-1995 "Rolling width measuring instrument." Compared with JJG 885-1995, in addition to knitting Series modifications outside the main technical changes are as follows. --- Based JJG 63-2007 "knife-shaped ruler" to cancel the 0 and level 1 requirements; --- Supporting surface roughness Face to modify the maximum permissible error of not more than Ra0.4μm (see 4.2); Face flatness --- table amendments not more than 0.01mm (see 4.3); --- Removes the requirement of working face and the measurement of the vertical axis; --- Based JJG 118-2010 "torsion spring comparator" method of verification, the original procedure shown variability in value "in The same position on repeated measurements of the amount of the block 10 times "to" five times repeated measurements at the same location on the Block "(see 6.3.8); --- Indication error test method to cancel the pairing with 4 or 5 equal blocks and other laws; --- Increasing the calibration certificate and test results in the notice contents page format (see Appendix A). The previous versions of the release JJG 885 case. --- JJG 885-1995. Rolling width measuring instrument verification regulation

1 Scope

This procedure is applied to the division value not greater than 0.001mm Rolling width measuring instrument initial verification, subsequent verification And the use of checks. 2. References This procedure references the following documents. JJG 39 mechanical comparator JJG 118 torsion spring comparator For dated references, only the dated edition applies to this procedure; undated reference documents Member, the latest edition (including any amendments) applies to this procedure.

3 Overview

Rolling width measuring instrument (hereinafter referred to as meter) primarily to compare the measurement of rolling bearings and finished parts Width, parallelism and oil groove depth and diameter of the cylindrical parts, highly poor. Instrument shape shown in Figure 1, Figures 2 and 3, the structure is mainly composed of a base, positioning and measuring mechanism and other components. FIG. 1 tape measure the width of the rod Rolling meter schematic 1- probe; 2- base; 3- stage; 4- DUT; 5- lever handle; 6- trimming nuts; 7- column; 8- indicator; 9- measurement frame; 10,11,12- fastening screw; 13- lever frame; 14- measuring rod

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