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GB/T 20914.3-2019Stamping dies -- Gas springs -- Part 3: Gas spring with increased spring force and compact built height (English PDF)

冲模氮气弹簧第3部分：紧凑强力氮气弹簧

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

October 18, 2019

Implementation date

May 1, 2020

Scope

GB/T 20914.3-2019 is the English-translated version of 冲模氮气弹簧第3部分：紧凑强力氮气弹簧.

GB/T 20914.3-2019 is the Chinese standard "Stamping dies -- Gas springs -- Part 3: Gas spring with increased spring force and compact built height". Its scope clause reads: This part of GB/T 20914 specifies the size, nominal initial force and type, marking, delivery technical conditions of the compact and powerful gas spring. mark.

This section applies to model 1700~200000, using nitrogen pressure, nominal initial force is 1700 × (1 ± 5%) N ~.200000 × The (1 ± 5%) N die uses a compact and powerful gas spring.

Note. For specifications of nitrogen spring installation accessories, refer to GB/T 20914.2. Its clauses include terms and description.

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Document preview — GB/T 20914.3-2019

National Standard of the People's Republic of China

ICS: 25.120.10
Classification: J 46

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and description

1 Scope

This part of GB/T 20914 specifies the size, nominal initial force and type, marking, delivery technical conditions of the compact and powerful gas spring.

mark.

This section applies to model 1700~200000, using nitrogen pressure, nominal initial force is 1700 × (1 ± 5%) N ~.200000 ×

The (1 ± 5%) N die uses a compact and powerful gas spring.

Note. For specifications of nitrogen spring installation accessories, refer to GB/T 20914.2.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 1804 General tolerances Part 1. Tolerances to linear and angular dimensions without tolerances (GB/T 1804-2000, eqv

ISO 2768-1. 1989)

GB/T 7306.1 55° sealing pipe thread Part 1. cylindrical internal thread and cylindrical external thread (GB/T 7306.1-2000, eqv

ISO 7-1.1994)

GB/T 7306.2 55° sealed pipe thread Part 2. Conical internal and conical external threads (GB/T 7306.2-2000, eqv

ISO 7-1.1994)

3 Terms and description

The gas spring terminology is shown in Figure 1.

Description.

1---plunger rod;

2---top dead center;

3---valve;

4---nitrogen;

5---cylinder;

F---Working power.

a Pressure inflation hole.

Figure 1 Gas spring terminology […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 2768 · ISO 7

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