HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (12 Oct 2025)

GB/T 300-2023 PDF English

US$200.00 · In stock · Download in 9 seconds
GB/T 300-2023: Rolling bearings - Four-row tapered 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 300: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
GB/T 300-2023English200 Add to Cart 0-9 seconds. Auto-delivery Rolling bearings - Four-row tapered roller bearings - Boundary dimensions Valid
GB/T 300-2008English319 Add to Cart 3 days Rolling bearings -- Four row tapered roller bearings-boundary dimensions Obsolete
GB/T 300-1995English319 Add to Cart 3 days Rolling bearings--Four row tapered roller bearings--Boundary dimensions Obsolete
GB 300-1987EnglishRFQ ASK 3 days Rolling bearings--Four row tapered roller bearings--Boundary dimensions Obsolete

Excerpted PDFs (Download full copy in 9 seconds upon purchase)

PDF Preview: GB/T 300-2023
      

Similar standards

GB/T 299   GB/T 301   GB/T 297   GBZ/T 300.165   

GB/T 300-2023: Rolling bearings - Four-row tapered 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/GBT300-2023
GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 21.100.20 CCS J 11 Replacing GB/T 300-2008 Rolling Bearings - Four-row Tapered Roller Bearings - Boundary Dimensions 滚动轴承 四列圆锥滚子轴承 外形尺寸 ISSUED ON: MAY 23, 2023 IMPLEMENTED ON: DECEMBER 1, 2023 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China.

Table of Contents

Foreword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Terms and Definitions ... 4 4 Symbols ... 4 5 Identification Code ... 5 6 Marking ... 6 7 Boundary Dimensions ... 6

Foreword

This document was drafted in accordance with the rules of GB/T 1.1-2020 Directives for Standardization - Part 1: Rules for the Structure and Drafting of Standardizing Documents. This document serves as a replacement of GB/T 300-2008 Rolling Bearings - Four Row Tapered Roller Bearings - Boundary Dimensions. In comparison with GB/T 300-2008, apart from editorial modifications, the main technical changes are as follows: a) The Chapter “Terms and Definitions” is added (see Chapter 3); b) The symbol and value of the contact angle of bearings are added (see Chapter 4 and Table 1 ~ Table 6); c) The Chapter “Identification Code” is added (see Chapter 5). Please be noted that certain content of this document may involve patents. The institution issuing this document does not undertake the responsibility of identifying these patents. This document was proposed by China Machinery Industry Federation. This document 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 document: Luoyang LYC Bearings Co., Ltd.; Luoyang Bearing Research Institute Co., Ltd. The main drafters of this document: Dong Hanjie, Ding Jianqiang, Fan Qiang, Zhang Bowen. The issuing of the previous versions: ---GB 300-1964, GB 300-1987, GB/T 300-1995, GB/T 300-2008; ---This is the fourth revision. Rolling Bearings - Four-row Tapered Roller Bearings - Boundary Dimensions

1 Scope

This document specifies the boundary dimensions of four-row tapered roller bearings. This document is applicable to the design and user type selection of four-row tapered roller bearings.

2 Normative References

The contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 272 Rolling Bearings - Identification Code GB/T 274-2023 Rolling Bearings - Chamfer Dimension - Maximum Values GB/T 6930 Rolling Bearings - Vocabulary

3 Terms and Definitions

The terms and definitions defined in GB/T 6930 are applicable to this document.

4 Symbols

The following symbols are applicable to this document. Unless otherwise specified, the symbols shown in Figure 1 and the values shown in Table 1 ~ Table 6 represent nominal dimensions. B: overall width of bearing inner ring B1: double raceway inner ring width b: width of outer ring spacer C: overall width of bearing outer ring ......
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 300-2023 be delivered?

Answer: The full copy PDF of English version of GB/T 300-2023 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 300-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 300-2023_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+ countries

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

Answer: Yes. www.ChineseStandard.us -- GB/T 300-2023 -- 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 300-2023?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 300-2023 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.

How to buy and download a true PDF of English version of GB/T 300-2023?

A step-by-step guide to download PDF of GB/T 300-2023_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 300-2023".
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