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GB/T 36520.4-2019Hydraulic fluid power—Dimensions and tolerances of polyurethane seals—Part 4: Dimensions and tolerances of seals for cylinder port (English PDF)

液压传动聚氨酯密封件尺寸系列第4部分：缸口密封圈的尺寸和公差

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 30, 2019

Implementation date

March 1, 2020

Scope

GB/T 36520.4-2019 is the English-translated version of 液压传动聚氨酯密封件尺寸系列第4部分：缸口密封圈的尺寸和公差.

GB/T 36520.4-2019 is the Chinese standard "Hydraulic fluid power—Dimensions and tolerances of polyurethane seals—Part 4: Dimensions and tolerances of seals for cylinder port".

Its scope clause reads: This part of GB/T 36520 specifies the symbols, structural types, dimensions and tolerances of polyurethane cylinder seals in hydraulic drive systems.

Logo. This part is applicable to the polyurethane sealing ring (referred to as the cylinder sealing ring) which is installed on the hydraulic cylinder guide sleeve to perform static sealing. Its clauses include terms and definitions; symbol; structure type.

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Document preview — GB/T 36520.4-2019

National Standard of the People's Republic of China

ICS: 23.100.99
Classification: J 20

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 Terms and definitions
4 symbol
5 structure type

1 Scope

This part of GB/T 36520 specifies the symbols, structural types, dimensions and tolerances of polyurethane cylinder seals in hydraulic drive systems.

Logo.

This part is applicable to the polyurethane sealing ring (referred to as the cylinder sealing ring) which is installed on the hydraulic cylinder guide sleeve to perform static sealing.

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 17446 Fluid Transmission System and Component Vocabulary

3 Terms and definitions

The terms and definitions defined in GB/T 17446 apply to this document.

4 symbol

The following symbols apply to this document.

D---Hydraulic cylinder bore diameter

D1---Cylinder seal outer diameter

D---guide sleeve sealing groove bottom diameter

H---Cylinder seal height

L---guide sleeve sealing groove axial length

S1---Cylinder mouth seal cross section lip width

S2---Cylinder seal cross section root width

WL---Cylinder mouth polyurethane bud seal code (referred to as cylinder mouth bud ring)

Y---Cylinder mouth Y-shaped polyurethane seal code (referred to as cylinder mouth Y-ring)

5 structure type

5.1 Sealing structure type of cylinder ring Y-ring

The cylinder ring Y-ring and its sealing structure are shown in Figure 1.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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GB/T 23262-2023|GB/T 43073-2023|GB/T 36520.3-2019|GB/T 14180-2026|GB/T 20671.11-2026|GB/T 20671.4-2026

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