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GB/T 24609-2023 English PDF

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Q: Should I purchase the latest version GB/T 24609-2023?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 24609-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$334.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 24609-2023: Rolling bearings - Thermal speed rating - Calculation
Status: Valid

GB/T 24609: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 24609-2023	334	Add to Cart	4 days	Rolling bearings - Thermal speed rating - Calculation	Valid
GB/T 24609-2009	559	Add to Cart	3 days	Rolling bearings -- Thermal speed rating -- Calculation and coefficients	Obsolete

Similar standards

GB/T 24608 GB/T 24610.2 GB/T 24610.3 GB/T 24607

Basic data

Standard ID: GB/T 24609-2023 (GB/T24609-2023)
Description (Translated English): Rolling bearings - Thermal speed rating - Calculation
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J11
Classification of International Standard: 21.100.20
Word Count Estimation: 18,168
Date of Issue: 2023-12-28
Date of Implementation: 2024-04-01
Older Standard (superseded by this standard): GB/T 24609-2009
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 24609-2023: Rolling bearings - Thermal speed rating - Calculation

---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.
ICS 21:100:20 CCSJ11 National Standards of People's Republic of China Replace GB/T 24609-2009 Calculation method for rated thermal speed of rolling bearings Rolingbearings-Thermalspeedrating-Calculation (ISO 15312:2018,IDT) Published on 2023-12-28 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Symbols and Units 2 5 Reference condition 3 5:1 General 3 5:2 Reference conditions for determining frictional heating 3 5:3 Reference conditions for determining heat dissipation 4 6 Calculation method of rated thermal speed 7 Appendix A (Informative) Coefficients f0r and f1r 8 Appendix B (informative) Notes 10 Appendix C (informative) Rated thermal speed of grease lubricated rolling bearings11 Reference 12

Foreword

This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting: This document replaces GB/T 24609-2009 "Calculation Methods and Coefficients of Rated Thermal Speed of Rolling Bearings" and is consistent with GB/T 24609- Compared with:2009, in addition to structural adjustments and editorial changes, the main technical changes are as follows: a) Changed the order of some symbols (see Table 1, Table 1 of the:2009 version); b) Changed the format of "Reference Conditions" (see Chapter 5, Chapter 5 of the:2009 edition); c) Move the "Annotation" chapter to the appendix (see Appendix B, Chapter 7 of the:2009 edition); d) Move the contents of the appendix "Rated thermal speed of grease-lubricated rolling bearings" to Appendix C (see Appendix C, Appendix B of the:2009 edition): This document is equivalent to ISO 15312:2018 "Calculation Method for Rated Thermal Speed of Rolling Bearings": Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents: This document is proposed by China Machinery Industry Federation: This document is under the jurisdiction of the National Rolling Bearing Standardization Technical Committee (SAC/TC98): This document was drafted by: Luoyang Bearing Research Institute Co:, Ltd:, Renben Co:, Ltd:, Zhejiang Zhaofeng Mechanical and Electrical Co:, Ltd:, Dalian Metallurgical Bearing Co:, Ltd: The main drafters of this document: Zhao Binhai, Li Feixue, Guo Changjian, Kang Naizheng, Wang Dehui: The previous versions of this document and the documents it replaces are as follows: ---First published as GB/T 24609-2009 in:2009; ---This is the first revision: Calculation method for rated thermal speed of rolling bearings

1 Scope

This document specifies the definition of the rated thermal speed of oil bath lubricated rolling bearings and the calculation principles for determining this parameter: From a tribological point of view See, the parameters determined in this document apply not only to bearings of standard construction of a given series and size, but also to other relevant standard constructions: Structured bearings: For most standard components, the heat of the entire component is generated by the bearings, and the maximum operating speed is determined by the allowable temperature: Due to kinematic effects, the rated thermal speed specified in this document does not apply to thrust ball bearings: Note 1: Appendix A gives the average value of the coefficients f0r and f1r - f0r is the coefficient for calculating the viscous loss of the oil bath lubricated bearing, and f1r is the coefficient for calculating the friction loss of the bearing: coefficient: Note 2: Appendix B gives annotations on the limit criteria: Note 3: Appendix C determines the reference conditions for grease lubrication: The reference conditions can be selected so that the rated thermal speed for grease lubrication is equal to that for oil bath lubrication: Thermal speed:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document: ISO 76 Rolling Bearing Static Load Ratings (Rolingbearings-Staticloadratings) Note: GB/T 4662-2012 Static load rating of rolling bearings (ISO 76:2006, IDT) ISO 1132-1 Tolerances for rolling bearings Part 1: Terms and definitions (Rolingbearings-Tolerances-Part 1: Note: GB/T 4199-2003 Rolling bearing tolerance definition (ISO 1132-1:2000, MOD) ISO 5593 Rolling Bearings Vocabulary (Rolingbearings-Vocabulary) Note: GB/T 6930-2002 Rolling bearing vocabulary (ISO 5593:1997, IDT) ISO 5753-1 Rolling bearing clearance Part 1: Radial clearance of radial bearings (Rolingbearings-Internalclear- Note: GB/T 4604:1-2012 Rolling bearing clearance Part 1: Radial clearance of radial bearings (ISO 5753-1:2009, IDT) Note: GB/T 7811-2015 Rolling bearing parameter symbols (ISO 15241:2012, IDT)

3 Terms and definitions

The terms and definitions defined in ISO 1132-1 and ISO 5593 and the following apply to this document: The URLs for the terminology databases used in standardization work maintained by ISO and IEC are as follows: ---ISO online browsing platform: https://www:iso:org/obp; 3:1 rated thermal speed thermalspeedrating Internal temperature when the heat generated by bearing friction and the heat dissipated through the bearing support surface (shaft and housing) are balanced under reference conditions: ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 24609-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 24609-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 24609-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 24609-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 24609-2023?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 24609-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.