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GB/T 39961-2021 English PDF

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US$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 39961-2021: Ball screw assembly - Dimension of shaft-end type screw
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39961-2021	259	Add to Cart	3 days	Ball screw assembly - Dimension of shaft-end type screw	Valid

Similar standards

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Basic data

Standard ID: GB/T 39961-2021 (GB/T39961-2021)
Description (Translated English): Ball screw assembly - Dimension of shaft-end type screw
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J51
Word Count Estimation: 14,111
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 39961-2021: Ball screw assembly - Dimension of shaft-end type screw

---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.
Ball screw assembly - Dimension of shaft-end type screw ICS 25.060.99 J51 National Standards of People's Republic of China Ball screw support structure type size Released on 2021-03-09 2021-10-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 General requirements 1 5 The type and size of the supporting structure of the ball screw pair 2 Appendix A (Informative appendix) Spacer ring and seal ring type size 9 Reference 10

Foreword

This standard is in accordance with GB/T Drafting of the rules given in 1.1-2009. This standard was proposed by the China Machinery Industry Federation. This standard was developed by the National Standardization Technical Committee for Metal Cutting Machine Tools (SAC/TC 22) Concentration. Drafting organizations of this standard. Nanjing Process Equipment Manufacturing Co., Ltd., National Machine Tool Quality Supervision and Inspection Center, Guochuang (Luoyang) Bearing Industry Technology Research Institute Co., Ltd. The main drafters of this standard. Huang Yuquan, Zhou Xia, Zhang Yunfeng, Ye Jun, Qin Chao, Wang Jikun, Hu Hao, Li Shulin, Yang Lifang, Li Xianhui. Ball screw support structure type size

1 Scope

This standard specifies the nominal diameter of 16 mm~100 mm, the supporting structure type of the ball screw pair with the number of load ball circles not more than 5 circles And size. This standard applies to ball screws used on machine tools and other machinery.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 145-2001 Center hole GB/T 1031-2009 Product Geometric Technical Specification (GPS) Surface Roughness Parameters and Numerical Values of Surface Structure Profile Method GB/T 1800.1-2020 Product Geometric Technical Specification (GPS) Linear Dimensional Tolerance ISO Code System Part 1.Public Basis of difference, deviation and fit GB/T 6403.5-2008 Grinding wheel overtravel groove GB/T 6930-2002 Rolling Bearing Vocabulary GB/T 17587.1-2017 Ball Screws Part 1.Terms and Symbols GB/T 17587.3-2017 Ball Screws Part 3.Acceptance Conditions and Acceptance Inspection GB/T 32334-2015 Rolling bearing assembly technical requirements for angular contact ball bearings

3 Terms and definitions

GB/T 1031-2009, GB/T 1800.1-2020, GB/T 6930-2002, GB/T 17587.1-2017, GB/T The terms and definitions defined in 32334-2015 apply to this document.

4 General requirements

4.1 Refer to Table 1 for the tolerance zone and roughness of the diameter and roughness of the ball screw secondary journal.

1 The tolerance zone of journal diameter and roughness unit is micron

Ball screw pair Accuracy class Support journal d3 Tolerance zone surface roughness Ra Journal d4 Tolerance zone surface roughness Ra 1, 2, 3 4, 5 7, 10 h5, js5 or j5 h6, js6 or j6 0.4 0.4 0.8 0.8 h7 0.4 0.4 0.8 1.6 ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 39961-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 39961-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 39961-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 39961-2021_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.