GB/T 271-2017 PDF EnglishUS$150.00 · In stock · Download in 9 seconds
GB/T 271-2017: Rolling bearings - Classification 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 271: Historical versions
Similar standardsGB/T 271-2017: Rolling bearings - Classification---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/GBT271-2017GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 21.100.20 J 11 Replacing GB/T 271-2008 Rolling bearings - Classification Issued on: MAY 12, 2017 Implemented on: DECEMBER 1, 2017 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration Committee. 3. No action is required - Full-copy of this standard will be automatically & immediately delivered to your EMAIL address in 0~60 minutes. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 6 4 Rolling bearing structure type classification ... 6 5 Rolling bearing size classification ... 9 Annex A (Normative) Rolling bearing comprehensive classification structure diagram ... 10ForewordThis Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 271-2008 Rolling bearings - Classification. Compared with GB/T 271-2008, the main technical modifications are as follows. - added “long face roller bearings” in classification according to roller type (see 4.2 of this Edition); - modified the name of “open bearing, closed bearing” to “open type bearing, closed type bearing”; and modified the definition of closed type bearing (see 4.7 of this Edition, 4.7 of Edition 2008); - modified the definitions of separable bearing and un-separable bearing (see 4.9 of this Edition, 4.9 of Edition 2008); - added “large bearing” in the classification according to nominal diameter size (see Clause 5 of this Edition); - added structure type of some bearings (see Table B.1 of this Edition). This Standard was proposed by China Machinery Industry Federation. This Standard shall be under the jurisdiction of National Technical Committee on Rolling Bearings of Standardization Administration of China (SAC/TC 98). The drafting organizations of this Standard. Luoyang Bearing Research Institute Co., Ltd., Fujian Yongan Bearing Co., Ltd., National Accreditation Center for Chinese Conformity Assessment, Handan Hongli Bearing Co., Ltd. Main drafters of this Standard. Zhang Bowen, Qian Weihua, Ding Liyong, Qin Zhitao, Wang Lifeng. Versions of standard substituted by this Standard are. - GB 271-1964, GB 271-1987, GB/T 271-1997, GB/T 271-2008. Rolling bearings - Classification1 ScopeThis Standard specifies the classification of rolling bearings. This Standard is applicable to the classification management of rolling bearing products.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 276, Rolling bearings - Deep groove ball bearings - Boundary dimensions GB/T 281, Rolling bearings - Self-aligning ball bearings - Boundary dimensions GB/T 283, Rolling bearings - Cylindrical rolling bearings - Boundary dimensions GB/T 285, Rolling bearings - Double row cylindrical roller bearings - Boundary dimensions GB/T 288, Rolling bearings - Self-aligning roller bearings - Boundary dimensions GB/T 290, Rolling bearings - Needle roller bearings, drawn cup without inner rings - Boundary dimensions GB/T 292, Rolling bearings - Angular contact ball bearings - Boundary dimensions GB/T 294, Rolling bearings - Three-point and four-point contact ball bearings - Boundary dimensions GB/T 296, Rolling bearings - Double row angular contact ball bearings - Boundary dimensions GB/T 297, Rolling bearings - Tapered roller bearings - Boundary dimensions GB/T 299, Rolling bearings - Metric double row tapered roller bearings - Boundary dimensions GB/T 300, Rolling bearings - Four row tapered roller bearings - Boundary dimensions GB/T 301, Rolling bearings - Thrust ball bearings - Boundary dimensions GB/T 3882, Rolling bearings - Insert bearings and eccentric looking collars - Boundary dimensions GB/T 4605, Rolling bearings - Thrust needle roller and cage assemblies, thrust washers GB/T 4663, Rolling bearings - Cylindrical thrust roller bearings - Boundary dimensions GB/T 5801, Rolling bearings - Needle roller bearings, dimension series 48, 49 and 69 - Boundary dimensions and tolerances GB/T 5859, Rolling bearings - Self-aligning thrust roller bearings - Boundary dimensions GB/T 6445, Rolling bearings - Needle roller bearing track rollers - Boundary dimensions and tolerances GB/T 6930, Rolling bearings - Vocabulary GB/T 16643, Rolling bearings - Combined needle roller - Thrust roller bearings - Boundary dimensions GB/T 20056, Rolling bearings - Radial needle roller and cage assemblies - Boundary dimensions and tolerances GB/T 24604, Rolling bearings - Angular contact thrust ball bearings used for machine tool screws GB/T 25760, Rolling bearings - Combined needle roller bearings with thrust ball bearings - Boundary dimensions GB/T 25761, Rolling bearings - Combined needle roller bearings with angular contact ball bearings - Boundary dimensions GB/T 25768, Rolling bearings - Combined needle roller bearings with double direction thrust cylindrical roller bearings b) particular bearing - the bearing particularly used in or mainly used in specific host or special condition. 4.6 Rolling bearing, according to whether the dimensions conform to the standard size, is divided into. a) standard bearing - the bearing that dimensions comply with standard size; b) non-standard bearing - the bearing that any size in dimensions does not comply with the provisions on standard size. 4.7 Rolling bearing, according to whether it has seal or dust cover, is divided into. a) open type bearing - the bearing without dust cover and seal; b) closed type bearing - the bearing with dust cover or seal. 4.8 Rolling bearing, according to the representation unit for dimension size and tolerance, is divided into. a) metric bearing - the rolling bearing of which dimension size and tolerance uses metric unit; b) inch bearing - the rolling bearing of which dimension size and tolerance uses inch unit. 4.9 Rolling bearing, according to whether its component can be separated, is divided into. a) separable bearing - the bearing of which sub-component can be separated; b) un-separable bearing - the bearing of which sub-component cannot be separated. 4.10 Rolling bearing, according to product extension classification, is divided into. a) bearing; b) combined bearing; c) bearing unit. 4.11 Rolling bearing, according to its structural shape (e.g., with or without outer ring, with or without cage, with or without groove as well as the shape of the ring, the structure of the rib, etc.), can be also divided into many structural ......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 271-2017 be delivered?Answer: The full copy PDF of English version of GB/T 271-2017 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 271-2017_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 271-2017_English will be deemed to be sold to your employer/organization who actually paid 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+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 271-2017 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.Question 5: Should I purchase the latest version GB/T 271-2017?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 271-2017 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 271-2017?A step-by-step guide to download PDF of GB/T 271-2017_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 271-2017". 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". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
