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GB/T 40565.3-2021 related PDF English

GB/T 40565.3-2021 (GB/T40565.3-2021, GBT 40565.3-2021, GBT40565.3-2021) & related versions
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GB/T 40565.3-2021: PDF in English (GBT 40565.3-2021)
GB/T 40565.3-2021
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
......

BASIC DATA
Standard ID GB/T 40565.3-2021 (GB/T40565.3-2021)
Description (Translated English) Connections for hydraulic fluid power. Quick-action couplings -- Part 3: Screw connection type for general purpose
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J20
Classification of International Standard 23.100.40
Word Count Estimation 7,775
Date of Issue 2021-10-11
Date of Implementation 2022-05-01
Quoted Standard GB/T 196; GB/T 197; GB/T 2351; GB/T 17446; ISO 18869
Drafting Organization Zhejiang Songqiao Pneumatic Hydraulic Co., Ltd.
Administrative Organization National Hydraulic and Pneumatic Standardization Technical Committee
Regulation (derived from) National Standard Announcement No. 12 of 2021
Proposing organization China Machinery Industry Federation
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration
Summary This standard specifies the dimensions and requirements of universal quick-change couplings for hydraulic threaded connections. This standard applies to threaded quick-change joints for general hydraulic equipment.