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GB/T 20850-2025 English PDF

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US$2039.00 · In stock
Delivery: <= 10 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 20850-2025: Safety of machinery - Guidelines for the application of machinery safety standards
Status: Valid

GB/T 20850: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20850-2025	2039	Add to Cart	10 days	Safety of machinery - Guidelines for the application of machinery safety standards	Valid
GB/T 20850-2014	1759	Add to Cart	10 days	Safety of machinery Guidelines for the understanding and use of safety of machinery standards	Valid
GB/T 20850-2007	RFQ	ASK	7 days	Safety of machinery -- Guidelines for the understanding and use of safety of machinery standards	Obsolete

Similar standards

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Basic data

Standard ID: GB/T 20850-2025 (GB/T20850-2025)
Description (Translated English): Safety of machinery - Guidelines for the application of machinery safety standards
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J09
Classification of International Standard: 13.110
Word Count Estimation: 102,127
Date of Issue: 2025-03-28
Date of Implementation: 2025-10-01
Older Standard (superseded by this standard): GB/T 20850-2014
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 20850-2025: Safety of machinery - Guidelines for the application of machinery safety standards

---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.
GB/T 20850-2025 English version. Safety of machinery - Guidelines for the application of machinery safety standards ICS 13.110 CCSJ09 National Standard of the People's Republic of China Replace GB/T 20850-2014 Machinery Safety Guidelines for the Application of Machinery Safety Standards Released on 2025-03-28 2025-10-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Preface V Introduction VII 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Abbreviations 1 5 Rules for drafting machinery safety standards 2 6 Classification of machinery safety standards 2 6.1 Overview 2 6.2 Category A standards (basic safety standards) 3 6.3 Category B standards (general safety standards) 4 6.4 Category C Standards (Machinery Product Safety Standards) 4 6.5 Differences between Class C and Class B standards 4 7 Applying machinery safety standards to reduce risks in machines 5 7.1 Steps in applying machinery safety standards 5 7.2 Steps, approaches and processes to achieve risk reduction 7 7.3 Application of relevant Class B standards 10 8 Safety distance and approach speed 11 8.1 General Principles11 8.2 Safety distance and minimum spacing 11 8.3 Approach speed 11 8.4 Calculation of minimum distance 11 9 Smart Security12 9.1 Risk Warning 12 9.2 Dynamic safety distance 12 9.3 Others13 10 Protective devices 13 11 Protective device 14 11.1 Overview 14 11.2 Interlocking device 14 11.3 Two-Hand Control Device (THCD) 15 11.4 Sensitive Protective Equipment (SPE) 15 11.5 Enabling Devices 16 11.6 Hold-to-Run Controls, Disconnects, Limiting Devices, and Limited-Motion Controls 17 12 Supplementary protective measures17 12.1 Emergency stop device 17 12.2 Fixed facilities for access to machinery 17 12.3 Hazardous Energy Control 18 13 Safety features19 13.1 Emergency stop function 19 13.2 Interlocking function 20 13.3 Two-handed control function 20 13.4 Enabling Function 20 14 Electrical equipment 20 15 Fluid power systems and their components 21 16 Ergonomics21 16.1 Terminology and general principles 21 16.2 Human body dimensions 21 16.3 Accessible surfaces 22 16.4 Display 22 16.5 Auditory, visual and speech signals 22 16.6 Human characteristics 22 17 Emissions of harmful substances22 17.1 Reducing the risks to health from hazardous substances emitted by machinery 22 17.2 Emissions of airborne hazardous substances 23 18 Risks from mechanical radiation 23 19 Fire, ignition hazards and explosions23 19.1 Fire Prevention and Protection 23 19.2 Ignition Hazard 24 19.3 Explosion prevention and protection 24 20 Noise 25 21 Mechanical vibration 25 21.1 Whole body vibration 25 21.2 Hand-transmitted vibration 26 22 Electromagnetic compatibility 26 Appendix A (Informative) Relationship between national and international standards for machinery safety and relevant EU technical regulations 27 Appendix B (Informative) List of Category A Standards 28 Appendix C (Informative) List of Category B Standards 30 Appendix D (Informative) Overview of Mechanical Electrical Safety Requirements 63 Appendix E (Informative) Ergonomic Considerations 67 Appendix F (informative) List of standards related to noise 70 References 72

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB/T 20850-2014 "Machinery Safety - Understanding and Guidelines for Machinery Safety Standards" and is compatible with GB/T 20850-2014 Compared with the previous version, in addition to structural adjustments and editorial changes, the main technical changes are as follows. --- Added a chapter on "Terms and Definitions" (see Chapter 3); --- Added a chapter on "Abbreviations" (see Chapter 4); --- Changed the content of the classification of machinery safety standards, added the drafting rules of machinery safety standards and the classification of machinery safety standards Related content, and adjust Table 1 and Table 2 to appendix form (see Chapter 5, Chapter 6, Appendix B and Appendix C,.2014 Edition Chapter 2); --- Deleted the basic flow chart and process configuration diagram (see Figure 1 of the.2014 edition); --- Changed the illustration of the way to reduce risk by using risk reduction measures including safety functions (see Figure 4,.2014 Edition Figure 3); --- Added the steps for applying machinery safety standards (see 7.1) and the content of adopting relevant Class B standards (see 7.3); --- Changed the diagram of the overview of the confirmation procedure for the safety function (see Figure 6, Figure 5 of the.2014 edition); --- Added a chapter on "Intelligent Safety" (see Chapter 9); --- Added relevant standards and requirements for fences [see 10.2.e)]; --- Deleted the relevant content of "mechanical restraint device" (see 7.2.3 of the.2014 edition); --- Add emergency stop device (see 12.1), safety design specifications for fixed facilities close to machinery (see 12.2.2), hazardous energy control (see 12.3) and other supplementary protective measures; --- Deleted "Signs, warning devices, signals and symbols, driving principles" and "documents" (see Chapter 10 and Chapter 11 of the.2014 edition) chapter); --- Deleted the relevant content of "mode selection, speed reduction and monitoring" (see 6.3 of the.2014 edition), added "interlocking function" and Relevant content of “two-hand operation function” (see 13.2 and 13.3); --- Deleted "Application of ergonomic standards" (see 12.8 of the.2014 edition); --- Deleted the ergonomic requirements for control actuators and changed the ergonomic requirements for displays (see 16.4,.2014 edition 12.4); --- Changed the relevant provisions of "Risks caused by radiation" (see Chapter 18, Chapter 14 of the.2014 edition); --- Changed the relevant provisions of "Fire, ignition hazard and explosion" (see Chapter 19, Chapter 16 of the.2014 edition); --- Change "acoustics" to "noise" and adjust Table 3 to the form of an appendix (see Chapter 20 and Appendix F, Chapter 17 of the.2014 edition). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Technical Committee for Machinery Safety Standardization (SAC/TC208). This document was drafted by. Guangqi Honda Automobile Co., Ltd., Liyang Elevator Engineering Co., Ltd., Nan'an China Machinery Standardization Research Institute Co., Ltd. Company, Anhui Jiugang Electromechanical Co., Ltd., Guangdong Datie CNC Machinery Co., Ltd., Zhejiang Kaidi Auto Parts Industry Co., Ltd., Shenzhen Danse Visual Arts Co., Ltd., Zhongshan Quality and Technical Supervision Standards and Coding Institute of Guangdong Province, Nanjing Special Equipment Safety Supervision and Inspection Institute, China Machinery Research Institute of Standards and Technology (Beijing) Co., Ltd., Jinan Casting and Forging Institute Inspection and Testing Technology Co., Ltd., Guizhou Construction Engineering Group Fifth Construction Engineering Engineering Co., Ltd., Quanzhou Standardization Association, Hubei Jiutai Safety and Environmental Protection Technology Co., Ltd., CRRC Dalian Locomotive and Rolling Stock Co., Ltd., China Railway Construction Bridge Engineering Bureau Group Electrification Engineering Co., Ltd., China University of Metrology Modern Science and Technology College, China Railway Construction Bridge Engineering Bureau Group Building Decoration Technology Co., Ltd., Hebei Huatong Heavy Industry Machinery Manufacturing Co., Ltd., Ningbo Weicheng Technology Co., Ltd., Sichuan Shuxing Youchuang Safety Technology Co., Ltd. Technology Co., Ltd., Henan Nile Machinery Equipment Co., Ltd., China Construction Sixth Engineering Bureau Co., Ltd., Hunan Shengshitong Technology Co., Ltd., Jiangsu Dongguan Intelligent Technology Co., Ltd., Zhangzhou Jugang Precision Machinery Co., Ltd., Jiangsu Baolong Electromechanical Manufacturing Co., Ltd., Shenzhen Wance Technology Co., Ltd., Yibin Jianyi Precision Machinery Manufacturing Co., Ltd., Xi'an Julang Precision Machinery Co., Ltd., Wenzhou Shenyi Axis Industry Co., Ltd. Company, Shandong Mai Delong Machinery Co., Ltd., Dongguan Guda Machinery Manufacturing Co., Ltd., Aneng Chongqing Construction Development Co., Ltd., Qingdao Hongyu Jilin Rail Transit Equipment Co., Ltd., Nanjing Tianhe Auto Parts Co., Ltd., Hangzhou Gujia Marine Technology Co., Ltd., Changzhou Mingsai Robotics Technology Co., Ltd., Shandong Panshi Corundum Co., Ltd., Xi'an Kangcheng Machinery Manufacturing Co., Ltd., Zhejiang Longyuan Equipment Technology Co., Ltd., Shenzhen Huaya CNC Machine Tool Co., Ltd., Guangdong Jiecheng CNC Machine Tool Co., Ltd., Ningbo Chengda Precision Machinery Co., Ltd. Ltd., Shandong Huayu Pressure Vessel Co., Ltd., Guangzhou Beiyun Technology Co., Ltd., Quanzhou Light Industry Vocational College, Dingqin Technology (Shenzhen) Co., Ltd. Co., Ltd., Wuhan Pudi Vacuum Technology Co., Ltd., Zhejiang Luosu Equipment Manufacturing Co., Ltd., Beijing Bochuang Kaisheng Machinery Manufacturing Co., Ltd., Guangdong Zhou Hexing Electromechanical Technology Co., Ltd., Hubei Jianheng Intelligent Equipment Co., Ltd., Shenzhen Xingxun Electronic Technology Co., Ltd., Kunshan Taigong Precision Machinery Co., Ltd., Zhejiang Globo Machinery Technology Co., Ltd., Shenhu Electronic Technology (Suzhou) Co., Ltd., Dongguan Emma CNC Technology Technology Co., Ltd., Jinan Changming CNC Equipment Co., Ltd., Shenzhen Times High-tech Equipment Co., Ltd., Fujian Xunda Petrochemical Engineering Co., Ltd., Hubei Jinye Yuyang Chemical Fiber Co., Ltd., Shenzhen Logic Automation Technology Co., Ltd., Shandong Desheng Robot Co., Ltd., Shenzhen Dahuan Robotics Technology Co., Ltd., Lijun Machinery Equipment (Qihe) Co., Ltd., Jonaco CNC Equipment (Jiangsu) Co., Ltd., Ji Nanmingyan Machinery Manufacturing Co., Ltd. and Shenzhen Infinite Power Development Co., Ltd. The main drafters of this document are. Zhang Peng, Zhang Zaichun, Zhu Bin, Xu Jiugang, Ma Yuning, Feng Shangxin, Cui Yiwei, Wang Feng, Wu Haijian, Gu Jiaqi, Fan Zhe, Zhou Qianfei, Zhang Xiaofei, Liu Zhiyong, Lu Jun, Ye Chun, Zheng Huating, Zhou Youguo, Zhu Lihua, Cai Lianyong, Li Huali, Sun Delong, Pan Dayong, Chen Hui, Yang Jinglong, Wen Lijun, Liu Yihao, Qin Peijun, Sha Xueqiang, Tang Jun, Zhang Jidong, Lan Yaliang, Dai Xiaomeng, Guo Yunhe, Chen Zhuoxian, Wu Xiaonan, Zhou Wei, Huang Junqiang, Fang Baling, Feng Jianbiao, Ye Gengbiao, Qin Siyuan, Ling Yimin, Feng Yu, Han Ji, Li Changfeng, Zhou Ligang, Zhao Shusong, Lei Meng, Wang Li, Dai Zhigao, Weng Jianjie, Zhang Lixin, Huang Baojun, Huang Zeshu, Qing Guangwei, Cai Rongsheng, Yang Haitao, Ma Yan, Xiang Lingyun, Chen Huanghua, Zhang Wenming, Liu Yingsheng, Ouyang Shaoyun, Xie Qiaoting, Liu Bing, Li Pengyong, Zhu Oupeng, Wang Guoquan, Sun Changming, Tian Hanrong, Wang Longcong, Yuan Guojun, Hu Xiangwei, Zhao Shenglin, Sun Jie, Liu Chao, Cao Mingjuan, Zou Lu, Hu Yonggang, Zhou Yanwen. The previous versions of this document and the documents it replaces are as follows. ---First published in.2007 as GB/T 20850-2007; ---GB/T 20850-2014; ---This is the third revision.

Introduction

The categories of safety standards in the machinery field are as follows. --- Category A standards (basic safety standards) give basic concepts, design principles and general characteristics applicable to all machinery. --- Class B standards (general safety standards) involve a safety feature of a machine or a type of safety device with a wider range of use. ● Category B1 standards, standards for specific safety features (such as safety distance, surface temperature, noise); ● Category B2 standard, safety device (such as two-hand control device, interlocking device, pressure sensitive device, protective device) standard. ---C-type standards (machinery product safety standards) are standards that specify detailed safety requirements for a specific machine or a group of machines. According to the provisions of GB/T 15706, this document belongs to Class A standard. This document is particularly relevant to the following stakeholders involved in machinery safety. ---Machinery manufacturers; ---Health and safety agencies. Other stakeholders affected by the level of machinery safety are. ---Machine users; ---Machine owner; ---Service providers; --- Consumer (for machinery intended for use by consumers). All of the above stakeholders may participate in the drafting of this document. The requirements specified in this document are refined, supplemented or modified by Category C standards. This document provides guidance to designers and manufacturers of machinery on the application of machinery safety standards, particularly in the absence of specific Category C standards. In this case, it can help designers and manufacturers correctly understand the relevant machinery safety standards. Machinery Safety Guidelines for the Application of Machinery Safety Standards

1 Scope

This document gives guiding principles for the application of machinery safety standards. This document is intended for designers and manufacturers of machinery to correctly understand and use machinery safety standards. This document does not cover the content of Category C standards.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 15706 General principles for safety design of machinery - Risk assessment and risk reduction GB/T 16755 Rules for the drafting and presentation of safety standards for machinery

3 Terms and definitions

The terms and definitions defined in GB/T 15706 and the following apply to this document. 3.1 Type-A standard basic safety standard basicsafetystandard Machinery safety standards that cover the basic concepts, design principles and general features of machinery safety that apply to all machinery. 3.2 Type-B standard Generic safety standard A machinery safety standard that specifies a safety feature or a type of safety guard that can be used on most machines. 3.3 Type-C standard Machinery product safety standard machinesafetystandard A machinery safety standard that specifies detailed safety requirements for a specific machine or group of machines. NOTE. The term “group of machines” refers to a number of machines having similar intended uses and similar hazards, hazardous situations and hazardous events. 3.4 acceptable risk acceptable risk The level of risk that is acceptable under given circumstances, based on current societal values. [Source. GB/T 35080-2018, 3.2]

4 Abbreviations

The following abbreviations apply to this document. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 20850-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 20850-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 6 ~ 10 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 20850-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 20850-2025_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 20850-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20850-2025 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.