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GB/T 283-2021: Rolling bearings - Cylindrical roller bearings - Boundary dimensions Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 283: Historical versions
GB/T 283-2021: Rolling bearings - Cylindrical roller bearings - Boundary dimensions---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT283-2021GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 21.100.20 CCS J 11 Replacing GB/T 283-2007 Rolling bearings - Cylindrical roller bearings - Boundary dimensions 滚动轴承 圆柱滚子轴承 外形尺寸 ISSUED ON: DECEMBER 31, 2021 IMPLEMENTED ON: JULY 01, 2022 Issued by: State Administration for Market Regulation; National Standardization Administration. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 4 4 Symbols ... 4 5 Code ... 7 6 Marking ... 7 7 Boundary dimensions ... 7 Appendix A (Normative) Boundary dimensions of non-reinforced cylindrical roller bearings ... 18 References ... 27ForewordThis document was drafted in accordance with the provisions of GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents". This document replaces GB/T 283-2007 "Rolling bearings - Cylindrical roller bearings - Boundary dimensions". Compared with GB/T 283-2007, in addition to editorial changes, the main technical changes are as follows: a) SUPPLEMENT the marking of dimensions Ew or Fw in some structural type drawings (see Figure 2, Figure 3, Figure 5, Figure 6); b) ADD the dimension B1 value of reinforced NH type bearings (see Table 1 ~ Table 4); c) EXPAND the size range of some structural types (see Table 1 ~ Table 5; Table 1 ~ Table 5 of the 2007 edition); d) ADD the dimension dimensions of 10 series NJ type bearings (see Table 5); e) ADD the dimension a value of some bearing models (see Table 6 and Table 8). Please note that some contents of this document may involve patents. The issuing agency of this document does not assume the responsibility for identifying patents. This document was proposed by China Machinery Industry Federation. This document shall be under the jurisdiction of National Technical Committee for Standardization of Rolling Bearings (SAC/TC 98). The drafting organizations of this document: Luoyang Bearing Research Institute Co., Ltd., Wuxi World Bearing Co., Ltd., Dalian Metallurgical Bearing Co., Ltd., Fujian Yongan Bearing Co., Ltd., Zhejiang Wuzhou Xinchun Group Co., Ltd., CRRC Dalian Locomotive and Rolling Stock Co., Ltd. The main drafters of this document: Zhao Binhai, Du Xiaoyu, Qin Zhenshan, Wang Dehui, Zheng Shihao, He Chengcheng, Zhang Shun. This standard replaces the standard previously issued as follows: - GB 283-1964, GB 283-1981, GB 283-1987, GB/T 283-1994, GB/T 283-2007; - GB 284-1964, GB 284-1981, GB 284-1987; - This is the fifth revision. Rolling bearings - Cylindrical roller bearings - Boundary dimensions1 ScopeThis document specifies the dimensions of cylindrical roller bearings and cylindrical roller bearings without inner rings and outer rings that comply with GB/T 273.3-2020. This document applies to the design and user selection of cylindrical roller bearings.2 Normative referencesThe contents of the following documents constitute essential clauses of this document through normative references in the text. Among them, for dated references, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document. GB/T 272-2017 Rolling bearings - Identification code GB/T 274-2000 Rolling bearings - Chamfer dimension - Maximum values GB/T 6930-2002 Rolling bearings - Vocabulary GB/T 20060-2011 Rolling bearings - Cylindrical roller bearings, separate thrust collars - Boundary dimensions3 Terms and definitionsThe terms and definitions defined in GB/T 6930-2002 apply to this document.4 SymbolsThe following symbols apply to this document. Unless otherwise specified, the symbols shown in Figures 1 ~ 8, the values shown in Tables 1 ~ 10, as well as Tables A.1 ~ A.9 in Appendix A, all represent nominal dimensions. Note: Figures 1 ~ 8 are only schematic diagrams, which do not show all structural details. There are many variant structures of cylindrical roller bearings. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 283-2021 be delivered?Answer: The full copy PDF of English version of GB/T 283-2021 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 283-2021_English with my colleagues?Answer: Yes. 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Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 283-2021 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.How to buy and download a true PDF of English version of GB/T 283-2021?A step-by-step guide to download PDF of GB/T 283-2021_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 283-2021". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". 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