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JJG 885-2014: Instruments for Measuring Rolling Bearing Width
Status: Valid JJG 885: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 885-2014 | English | 419 |
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Instruments for Measuring Rolling Bearing Width
| Valid |
JJG 885-2014
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| JJG 885-1995 | English | 319 |
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Verification Regulation of Instruments for Measuring Rolling Bearing Width
| Obsolete |
JJG 885-1995
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PDF similar to JJG 885-2014
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Word Count Estimation | 18,136 | | Date of Issue | 8/25/2014 | | Date of Implementation | 2/25/2015 | | Older Standard (superseded by this standard) | JJG 885-1995 | | Quoted Standard | JJG 39; JJG 118 | | Regulation (derived from) | People's Republic of China The State Administration of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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