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GB/T 6578-2024: Hydraulic fluid power - Cylinders - Dimensions and tolerances of housings for rod wiper-rings in reciprocating applications
Status: Valid GB/T 6578: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6578-2024 | English | 459 |
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Hydraulic fluid power - Cylinders - Dimensions and tolerances of housings for rod wiper-rings in reciprocating applications
| Valid |
GB/T 6578-2024
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| GB/T 6578-2008 | English | 559 |
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Hydraulic fluid power -- Cylinder -- Reciprocating -- Housings for rod wipers -- Dimensions and tolerances
| Obsolete |
GB/T 6578-2008
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| GB/T 6578-1986 | English | 439 |
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Hydraulic fluid power--Cylinders--Reciprocating--Housings for rod wipers--Dimensions and tolerances
| Obsolete |
GB/T 6578-1986
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PDF similar to GB/T 6578-2024
Basic data | Standard ID | GB/T 6578-2024 (GB/T6578-2024) | | Description (Translated English) | Hydraulic fluid power - Cylinders - Dimensions and tolerances of housings for rod wiper-rings in reciprocating applications | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J20 | | Classification of International Standard | 23.100.60; 23.100.20 | | Word Count Estimation | 22,276 | | Date of Issue | 2024-03-15 | | Date of Implementation | 2024-10-01 | | Older Standard (superseded by this standard) | GB/T 6578-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 6578-2024: Hydraulic fluid power - Cylinders - Dimensions and tolerances of housings for rod wiper-rings in reciprocating applications
---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.
ICS 23.100.60;23.100.20
CCSJ20
National Standards of People's Republic of China
Replaces GB/T 6578-2008
Hydraulic transmission cylinder
Dimensions and tolerances of wiper grooves for reciprocating piston rods
Released on 2024-03-15
2024-10-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
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 for standardization documents"
Drafting.
This document replaces GB/T 6578-2008 "Groove types, dimensions and tolerances of dust seals for hydraulic cylinder piston rods" and is compatible with GB/T 6578-
Compared with.2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) The applicable piston rod diameter range has been changed (see Chapter 1, Chapter 1 of the.2008 edition);
b) Added the terms and definitions defined in GB/T 3505-2009 (see Chapter 3);
c) Added symbols A, B, C0, E, F, Ra, Rδc, Rmr, Rz (see Chapter 4);
d) Added dust seal classification and E-type groove (see Chapter 5);
e) Added seal schematic diagram (see Figure 2 to Figure 6);
f) Added piston rod diameter series 400 and 450 (see Table 1 to Table 5);
g) The fillet dimensions of type B grooves have been changed (see Figure 3, Figure 3 of the.2008 edition);
h) The piston rod diameter applicable to the D-type detachable gland groove has been changed (see Table 4, Table 4 of the.2008 edition);
i) Changed the dimensional requirements for the axial length C of the installation lead-in angle (see Table 6, Table 5 of the.2008 edition);
j) Added groove surface roughness requirements (see Chapter 8).
This document is modified to adopt ISO 6195.2021 "Fluid transmission systems and components - Reciprocating hydraulic cylinder piston rod dust ring groove size"
Dimensions and Tolerances.
This document has the following structural adjustments compared to ISO 6195.2021.
--- Chapter 5 corresponds to the third paragraph of the introduction to ISO 6195.2021, and adds the title "5 Classification";
---6.1 corresponds to Chapter 5 and 8.1 of ISO 6195.2021;
---6.2~6.6 correspond to 6.1~6.5 of ISO 6195.2021 respectively;
---8.1 and 8.2 correspond to 8.2 and 8.3 of ISO 6195.2021 respectively.
The technical differences between this document and ISO 6195.2021 and their reasons are as follows.
--- ISO 5598 (see Chapter 3) was replaced by the normative reference GB/T 17446 to adapt to my country's technical conditions;
--- Added a chapter on "Classification" (see Chapter 5) to facilitate application;
--- Changed some contents of the general rules for grooves (see 6.1) to facilitate accurate expression;
--- The chamfer size of type B groove has been changed (see Figure 3) to adapt to my country's technical conditions;
--- Added the minimum requirement for the axial length C of the installation lead-in angle when the groove radial depth S = 12mm (see Table 6) to facilitate
application.
The following editorial changes were made to this document.
--- In order to coordinate with the existing standards, the standard name will be changed to "Dimensions of dust ring grooves for reciprocating piston rods of hydraulic transmission hydraulic cylinders
and tolerances";
--- Changed some symbols to distinguish them from the footnote symbols of the figure;
--- In Figures 4 and 5, the groove fillet angle ≥R0.5 is changed to R≤0.5, and L in Table 7 is changed to L1, which is an errata.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Hydraulic and Pneumatic Standardization Technical Committee (SAC/TC3).
This document was drafted by. Guangzhou Mechanical Science Research Institute Co., Ltd., Yantai Jialiang Information Service Co., Ltd., Suzhou Meifului New Materials
Technology Co., Ltd., Chengdu Shengbang Sealing Co., Ltd., Guangdong Tiancheng Sealing Co., Ltd., Zhejiang Product Quality and Safety Science and Technology Co., Ltd.
Jiyuan Fengze Special Steel Industrial Co., Ltd., and Jiangsu Xinheyi Machinery Co., Ltd.
The main drafters of this document are. Liang Xiaofeng, Liu Guangfu, Huang Le, Tang Yingda, Fan Debo, Sun Shaojia, Pan Yuxun, Shen Zhen, Yu Quansheng, Wang Mukang,
Jiang Kan, Wang Zeqiang, Cao Guoxing.
--- This document was first published in 1986 as GB/T 6578-1986 and revised for the first time in.2008;
---This is the second revision.
Introduction
In a fluid transmission system, power is transmitted and controlled by a pressurized fluid in a closed circuit.
Enter the hydraulic cylinder, thereby protecting its entire sealing system, hydraulic cylinder and other components and hydraulic fluid.
Hydraulic transmission cylinder
Dimensions and tolerances of wiper grooves for reciprocating piston rods
1 Scope
This document specifies the dimensions and tolerances for wiper grooves on reciprocating piston rods of hydraulic cylinders.
This document is applicable to the dust ring groove of the reciprocating piston rod of hydraulic cylinders with piston rod diameters of 4mm~450mm.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 3505-2009 Product Geometry Specification (GPS) Surface Structure Profile Method Terms, Definitions and Surface Structure Parameters
(ISO 4287.1997, IDT)
GB/T 17446 Fluid power systems and components vocabulary (GB/T 17446-2024, ISO 5598.2020, MOD)
3 Terms and definitions
The terms and definitions defined in GB/T 3505-2009 and GB/T 17446 apply to this document.
4 Symbols
The following symbols apply to this document.
A---Surface roughness of groove side;
B---Surface roughness of groove bottom;
C---Axial length of installation lead-in angle;
C0 --- Support length ratio reference line (see 4.5.4 in GB/T 3505-2009);
D1---groove bottom diameter;
D2---Aperture of the groove end;
d---piston rod diameter;
E---Piston rod surface roughness;
F---Surface roughness of installation lead-in angle;
L1---groove width;
L2---Total length of dustproof ring;
L3---Groove end width;
r1, r2 --- fillet radius;
Ra---arithmetic mean deviation of the assessed profile (see 4.2.1 in GB/T 3505-2009);
Rδc---Height difference of horizontal section of profile (see 4.5.3 in GB/T 3505-2009);
Rmr --- Profile support length ratio (see 4.5.1 in GB/T 3505-2009);
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