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GB/T 40565.3-2021 PDF English

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GB/T 40565.3-2021: Connections for hydraulic fluid power. Quick-action couplings - Part 3: Screw connection type for general purpose
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GB/T 40565.3-2021125 Add to Cart Auto, 9 seconds. Connections for hydraulic fluid power. Quick-action couplings - Part 3: Screw connection type for general purpose Valid

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GB/T 40565.3-2021: Connections for hydraulic fluid power. Quick-action couplings - Part 3: Screw connection type for general purpose


---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/GBT40565.3-2021
GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 23.100.40 CCS J 20 Connections for Hydraulic Fluid Power - Quick-action Couplings - Part 3: Screw Connection Type for General Purpose 液压传动连接 快换接头 [ISO 14541:2013, Hydraulic Fluid Power - Dimensions and Requirements for Screw- to-connect Quick-action Couplings for General Purpose, MOD] ISSUED ON: OCTOBER 11, 2021 IMPLEMENTED ON: MAY 1, 2022 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China.

Table of Contents

Foreword ... 3 Introduction ... 5 1 Scope ... 6 2 Normative References ... 6 3 Terms and Definitions ... 6 4 Dimensional Requirements ... 7 5 Performance Requirements ... 8 6 Installation Instructions ... 9 7 Identification ... 10 8 Marking ... 10 9 Labeling Instructions ... 11

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 is Part 3 of GB/T 40565 Connections for Hydraulic Fluid Power - Quick-action Couplings. GB/T 40565 has issued the following parts: ---Part 2: Flush-face Type at 20 MPa to 31.5 MPa; ---Part 3: Screw Connection Type for General Purpose; ---Part 4: Screw Connection Type at 72 MPa. This document uses the re-drafting method in the modification and adoption of ISO 14541:2013 Hydraulic Fluid Power - Dimensions and Requirements for Screw-to-connect Quick-action Couplings for General Purpose. The technical differences between this document and ISO 14541:2013, and the causes for these differences are as follows: ---In terms of Normative References, this document makes adjustments with technical differences, so as to adapt to the technical conditions of China. The adjustments are intensively reflected in Chapter 2 “Normative References”. See the specific adjustments below: a) GB/T 197, which modifies and adopts international standard, is used to replace ISO 965-1 (see Table 1); b) GB/T 196, which modifies and adopts international standard, is used to replace ISO 724 (see Table 1); c) GB/T 17446, which identically adopts international standard, is used to replace ISO 5598 (see Chapter 3); d) ISO 18869 is used to replace ISO 7241-2 (see 5.3, 5.4, 5.5, 5.6, 5.7 and 5.8); e) The reference to GB/T 2351 is added (see 4.2); f) The reference to ISO 1302 in ISO 14541:2013 is deleted (see 4.1 of ISO 14541:2013). This document makes the following editorial modifications: ---The title of the Standard is modified into Connections for Hydraulic Fluid Power - Quick-action Couplings - Part 3: Screw Connection Type for General Purpose; ---The unit of pressure “bar” is deleted. Connections for Hydraulic Fluid Power - Quick-action Couplings - Part 3: Screw Connection Type for General Purpose

1 Scope

This document specifies the dimensions and requirements of general-purpose screw connection type of hydraulic quick-action couplings. This document is applicable to the screw connection type of quick-action couplings for general- purpose hydraulic equipment.

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 196 General Purpose Metric Screw Threads - Basic Dimensions (GB/T 196-2003, ISO 724:1993, MOD) GB/T 197 General Purpose Metric Screw Threads - Tolerances (GB/T 197-2018, ISO 965- 1:2013, MOD) GB/T 2351 Fluid Power Systems and Components - Outside Diameters of Tubes and Inside Diameters of Hoses (GB/T 2351-2021, ISO 4397:2011, IDT) GB/T 17446 Fluid Power Systems and Components - Vocabulary (GB/T 17446-2012, ISO 5598:2008, IDT) ISO 18869 Hydraulic Fluid Power - Test Methods for Couplings Actuated with or without Tools

3 Terms and Definitions

What is defined in GB/T 17446, and the following terms and definitions are applicable to this document. 3.1 fluid loss Fluid loss refers to the amount of fluid that leaks when the quick-action couplings are ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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