GB/T 15622-2023Hydraulic cylinder - Test method (English PDF)

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020

"Directives for standardization - Part 1.Rules for the structure and drafting of

standardizing documents".

This document replaces GB/T 15622-2005 "Hydraulic Fluid Power -- Test Method for

the Cylinders". Compared with GB/T 15622-2005, in addition to structural adjustments

and editorial changes, the main technical changes are as follows.

a) Deleted the requirements for the test apparatus and the schematic diagram of the

test (see 5.1 of Edition 2005);

b) Changed the test conditions (see Chapter 6 of this Edition; Chapter 5 of Edition

2005);

c) Changed the test items and requirements (see Chapters 7~10 of this Edition;

Chapters 6~8 of Edition 2005);

d) Deleted the requirements for test reports (see Chapter 9 of Edition 2005).

The modification of this document adopts ISO 10100.2020 "Hydraulic fluid power --

Cylinders -- Acceptance tests".

The technical differences and reasons between this document and ISO 10100.2020 are

as follows.

- Replaced ISO 5598 (see Chapter 3 of this document) with the normative reference

GB/T 17446 to adapt to China's technical conditions and improve operability;

- Replaced ISO 6743-4 and ISO 7745 (see 6.1 of this document) with normative

references GB/T 7631.2 and GB/T 16898 to adapt to China's technical conditions

and improve operability;

- Replaced ISO 4406 (see 6.2.2 of this document) with the normative reference GB/T

14039 to adapt to China's technical conditions and improve operability;

- Changed the test setup requirements for friction force test (see 10.2 of this

document; 10.2 of ISO 10100.2020) to adapt to the technical conditions in China

and improve operability.

This document has undergone the following editorial changes.

- Changed the standard name to "Hydraulic cylinder -- Test method";

- Deleted the footnote to Table 1;

- Changed some symbols;

Hydraulic cylinder -- Test method

1 Scope

This document describes the test method for hydraulic cylinders.

This document is applicable to the test of hydraulic cylinders.

2 Normative references

The following referenced documents are indispensable for the application of this

document. For dated references, only the edition cited applies. For undated references,

the latest edition of the referenced document (including any amendments) applies.

GB/T 7631.2, Lubricants, industrial oils and related products (class L) -

Classification - Part 2.Family H (Hydraulic systems) (GB/T 7631.2-2003, ISO

6743-4.1999, IDT)

GB/T 14039, Hydraulic fluid power – Fluids -- Method for coding the level of

contamination by solid particles (GB/T 14039-2002, ISO 4406.1999, MOD)

GB/T 16898, Guidelines for use of fire-resistant hydraulic fluids (GB/T 16898-1997,

idt ISO 7745.1989)

GB/T 17446, Fluid power systems and components -- Vocabulary (GB/T 17446-

2012, ISO 5598.2008, IDT)

ISO 15380, Lubricants, industrial oils and related products (class L) -- Family H

(Hydraulic systems) -- Specifications for hydraulic fluids in categories HETG,

HEPG, HEES and HEPR

3 Terms and definitions

For the purposes of this document, the terms and definitions defined in GB/T 17446

apply.

4 Symbols and units

The symbols and units in Table 1 are applicable to this document.

5 Feature inspection and characteristic parameters

9 Item P - Internal leakage test (optional)

10 Item F - Friction test (optional)