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GB/T 6577-2021: Types, dimensions and tolerances of groove for seals with bearing rings for hydraulic cylinders piston
Status: Valid GB/T 6577: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6577-2021 | English | 189 |
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Types, dimensions and tolerances of groove for seals with bearing rings for hydraulic cylinders piston
| Valid |
GB/T 6577-2021
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| GB/T 6577-1986 | English | 239 |
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Hydraulic fluid power. Cylinders. Piston seal housings incorporating bearing rings. Dimensions and tolerances
| Obsolete |
GB/T 6577-1986
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PDF similar to GB/T 6577-2021
Basic data | Standard ID | GB/T 6577-2021 (GB/T6577-2021) | | Description (Translated English) | Types, dimensions and tolerances of groove for seals with bearing rings for hydraulic cylinders piston | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J20 | | Word Count Estimation | 10,110 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 6577-2021: Types, dimensions and tolerances of groove for seals with bearing rings for hydraulic cylinders piston
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Types, dimensions and tolerances of groove for seals with bearing rings for hydraulic cylinders piston
ICS 23.100.60
CCSJ20
National Standards of People's Republic of China
Replace GB/T 6577-1986
Seal groove with support ring for hydraulic cylinder piston
Type, size and tolerance
Released on 2021-05-21
2021-12-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB/T 6577-1986 "Type, Dimensions and Tolerances of Seal Groove with Support Ring for Piston of Hydraulic Cylinder", and
Compared with GB/T 6577-1986, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Modified normative references (see Chapter 2, Chapter 2 of the 1986 edition);
b) In the symbol, d1, d2, and d3 are respectively modified to d, d1, and d2, the symbols L3 and S are deleted, and the symbols r and r2 are added (see Chapter 4, 1986
Chapter 3 of the Year Edition);
c) Modified the roughness requirements of the groove diagram and the size of r2, and added the cross-sectional schematic diagram of the combined seal (see Figure 1 and Figure 2,
(Figure from 1986 edition);
d) The assembly groove diagram has been added (see Figure 2);
e) The tolerance of L1, the size of C, and the size of r1 in Table 1 have been revised, and the note "②" in the table has been deleted (see Table 1, the 1986 edition of the table);
f) Part of the groove size series has been added (see Table 1, the 1986 edition of the table).
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed by China Machinery Industry Federation.
This document is under the jurisdiction of the National Hydraulic and Pneumatic Standardization Technical Committee (SAC/TC3).
Drafting organizations of this document. Guangzhou Academy of Mechanical Sciences Co., Ltd., Shaoguan Hydraulic Parts Factory Co., Ltd., Northwest Rubber and Plastics Research and Design
Institute Co., Ltd., Hebei Huami Rubber Technology Co., Ltd., Yantai Future Automatic Equipment Co., Ltd.
The main drafters of this document. Liang Xiaofeng, Peng Xiaoxiang, Lu Xinchun, Li Zangxu, Cao Changzhen, Zhang Heguang, Guo Xuejing.
This document was first published in 1986, and this is the first revision.
Seal groove with support ring for hydraulic cylinder piston
Type, size and tolerance
1 Scope
This document specifies the symbols, types, dimensions and tolerances of the combined sealing grooves with supporting rings for hydraulic cylinder pistons.
This document is applicable to the belt supporting ring which is installed on the piston of the reciprocating hydraulic cylinder with the cylinder diameter of 20mm~500mm to play a two-way sealing function.
Combined seal (hereinafter referred to as combined seal).
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 1031 Product Geometric Technical Specification (GPS) Surface Texture Profile Method Surface Roughness Parameters and Numerical Values
3 Terms and definitions
There are no terms and definitions that need to be defined in this document.
4 symbols
The following symbols apply to this document.
C --- the axial length of the chamfer;
D ---Outer diameter of combined sealing groove (bore diameter);
d ---The inner diameter of the combined sealing groove (the bottom diameter of the piston sealing groove);
d1 --- The diameter of the part where the piston fits with the support ring;
d2 --- Piston diameter;
L1 --- Axial length of combined sealing groove;
L2 --- The axial length of the part on the piston that matches the support ring;
r, r1, r2 --- fillet radius.
5 Groove type
There are two types of grooves for combined sealing. integral type and assembly type, as shown in Figure 1 and Figure 2.The surface roughness Ra of the groove should meet
According to GB/T 1031, there should be no burrs, sharp corners and rough machining marks at the installation chamfers.
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