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JJG 785-2009 English PDF

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JJG 785-2009: Verification Regulation of Deep Groove Ball Bearing Ring Raceway Diameter and Position Measuring Instrument
Status: Valid

JJG 785: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 785-2009English399 Add to Cart 3 days [Need to translate] Verification Regulation of Deep Groove Ball Bearing Ring Raceway Diameter and Position Measuring Instrument Valid JJG 785-2009
JJG 785-1992English279 Add to Cart 3 days [Need to translate] Verification Regulation of Instrument for Measuring Place and Parallel of Radial Ball Bering Outes Race Obsolete JJG 785-1992

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Basic data

Standard ID JJG 785-2009 (JJG785-2009)
Description (Translated English) Verification Regulation of Deep Groove Ball Bearing Ring Raceway Diameter and Position Measuring Instrument
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A52
Classification of International Standard 17.040
Word Count Estimation 17,121
Date of Issue 2009-04-08
Date of Implementation 2009-10-08
Older Standard (superseded by this standard) JJG 785-1992
Quoted Standard JJF 1001-1998; JJF 1059-1999; JJF 1094-2002; JJG 118-1996; JJG 39-2004; JJG 34-2008; GB/T 307.2-2005
Regulation (derived from) AQSIQ Announcement No. 27 of 2009
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to dividing the value of not more than 1��m deep groove ball bearing inner (outer) ring raceway diameter, position measuring instrument (hereinafter referred to as the raceway meter) of the initial verification, testing and use of follow-up inspection.

JJG 785-2009: Verification Regulation of Deep Groove Ball Bearing Ring Raceway Diameter and Position Measuring Instrument


---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 Deep Groove Ball Bearing Ring Raceway Diameter and Position Measuring Instrument State verification procedures People's Republic of China Deep groove ball bearing rings raceways Diameter, the position measuring instrument Posted 2009-04-08 2009-10-08 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Deep groove ball bearing ring raceway diameter, Position measuring instrument verification regulation Instrument Replacing JJG 785-1992 The regulations by the State Administration of Quality Supervision, Inspection and Quarantine April 8, 2009 approved, and since 2009 From October 8 implementation. NFP. National Engineering Geometrical Parameters Measurement Technology Committee The main drafting units. Shandong Institute of Metrology Participated in the drafting. LYG Luoyang Bearing Co., Ltd. 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. Zhao Dongsheng (Shandong Province Institute of Metrology) Xia Xiao Hong (Shandong Province Institute of Metrology) Sunkuai Qing (Shandong Province Institute of Metrology) Drafters participate. Pang Huaqi (LYG Luoyang Bearing Co., Ltd.) Liu Ziqiang (LYG Luoyang Bearing Co., Ltd.) Xu Qi (Yantai Bearing Instrument Co., Ltd.)

table of Contents

1 Scope (1) 2. Referenced Documents (1) 3 Overview (1) 4 metering performance requirements (1) Force measuring 4.1 (1) 4.2 Face Flatness (1) Height difference 4.3 targeting mechanism of three-wheel (1) 4.4 Indicator (3) 4.5 Repeatability (3) 4.6 Indication error (3) 5 General technical requirements (3) 5.1 Appearance (3) 5.2 Interaction of each part (3) 6 Control of measuring instruments (3) 6.1 Verification condition (3) 6.2 Verification Project (4) 6.3 Verification Methods (4) Processing 6.4 Verification Results (6) 6.5 test cycle (6) Appendix A shows the results of measurement error Uncertainty Evaluation (7) Appendix B calibration certificate and test results in the notice page format (10) Deep groove ball bearing ring raceway diameter, position measuring instrument verification regulation

1 Scope

This procedure is applied to the division value of not more than 1μm deep groove ball bearing (outer) raceway diameter, the position measuring instrument (Hereinafter referred to as raceway meter) initial verification, subsequent verification and in-service inspection.

2 Citations

The regulations cited in the following documents. JJF1001-1998 common measurement terms and definitions JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement JJF1094-2002 measuring instrument characteristics evaluation JJG 118-1996 Wrap Spring comparator JJG 39-2004 mechanical comparator JJG 34-2008 indicator (pointer, digital display) Principles and Methods GB/T 307.2-2005 Rolling measuring and testing When using this procedure, it should pay attention to using the currently valid version of the documents cited.

3 Overview

Raceway Meter is to compare the measurement of deep groove ball bearing inner or outer ring raceway diameter, raceway center and the reference terminal Axial distance and parallel surfaces, the amount of variation between the outer ring raceway and the outer surface of the channel thickness. Instrument appearance Figures 1, 2 and 3, the structure mainly consists of indicator, measuring head, positioning the fulcrum, the fulcrum rails and base composition.

4 metering performance requirements

4.1 Force The outer ring raceway gauge load raceway diameter measuring end is not greater than specified in Table 1. Table 1 meter outer ring raceway raceway diameter measurement end load Measurement range D (mm) 30 \u003cD≤90 90\u003cD≤200 200\u003cD≤300 300\u003cD≤500 Force (N) 15 17 18 20 4.2 Face flatness Flatness 4.2.1 transmission lever anvil surface is not more than 2μm. Flatness 4.2.2 fulcrum rails face on a 100mm length of not more than 20μm. A height difference of 4.3 three-wheel positioning mechanism 4.3.1 positioning mechanism for spherical surfaces and a cylindrical surface composed of three-wheel plane whose composition should proofread like ring rolling Radial plane coincides with the track center.

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