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GB/T 15242.3-2021: Dimensions series of rod and piston dynamic seals for hydraulic cylinders - Part 3: Dimensions and tolerances of groove for co-axial seals
Status: Valid GB/T 15242.3: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 15242.3-2021 | English | 259 |
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Dimensions series of rod and piston dynamic seals for hydraulic cylinders - Part 3: Dimensions and tolerances of groove for co-axial seals
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GB/T 15242.3-2021
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| GB/T 15242.3-1994 | English | 359 |
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Hydraulic fluid power. Cylinder rod and piston seals for reciprocating applications of Co-axial seals. Dimensions and tolerances of housings
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GB/T 15242.3-1994
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Basic data | Standard ID | GB/T 15242.3-2021 (GB/T15242.3-2021) | | Description (Translated English) | Dimensions series of rod and piston dynamic seals for hydraulic cylinders - Part 3: Dimensions and tolerances of groove for co-axial seals | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J20 | | Word Count Estimation | 14,198 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 15242.3-2021: Dimensions series of rod and piston dynamic seals for hydraulic cylinders - Part 3: Dimensions and tolerances of groove for co-axial seals
---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.
Dimensions series of rod and piston dynamic seals for hydraulic cylinders-Part 3.Dimensions and tolerances of groove for co-axial seals
ICS 23.100.60
CCSJ20
National Standards of People's Republic of China
Replace GB/T 15242.3-1994
Hydraulic cylinder piston and piston rod dynamic sealing device size series
Part 3.Coaxial seal groove dimension series and tolerances
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 is the third part of GB/T 15242 "Dimensions of hydraulic cylinder piston and piston rod dynamic seal device series". GB/T 15242 has
The following sections were released.
---Part 1.Coaxial seal size series and tolerances;
---Part 2.Support ring size series and tolerances;
---Part 3.Coaxial seal groove dimension series and tolerances;
---Part 4.Support ring installation groove dimension series and tolerances.
This document replaces GB/T 15242.3-1994 "The installation groove size system for coaxial seals for hydraulic cylinder piston and piston rod dynamic seal devices"
Compared with GB/T 15242.3-1994, except for structural adjustments and editorial changes, the main technical changes are as follows.
a) Modified the scope (see Chapter 1, Chapter 1 of the.1994 edition);
b) Modified normative references (see Chapter 2, Chapter 2 of the.1994 edition);
c) Added terms and definitions (see Chapter 3);
d) Some symbols have been modified and added (see Chapter 4, Chapter 3 of the.1994 edition);
e) The "Mounting groove type of coaxial seal for hydraulic cylinder piston dynamic sealing device" (see Figure 1 of the.1994 edition) is refined into "holes with square
"Schematic diagram of coaxial seals and groove types for holes" and "Schematic diagram of coaxial seals for holes and groove types" and added sub-pictures
"A) Schematic diagram of the seal" (see Figure 1, Figure 2);
f) Modified and supplemented the groove dimensions and tolerances of square coaxial seals for holes, and added "Specification Code" (see Table 1,.1994
Edition of Table 1);
g) The groove dimensions and tolerances of combined coaxial seals for holes have been added (see Table 2);
h) "Mounting groove type of coaxial seal for hydraulic cylinder piston rod dynamic sealing device" (see Figure 2 of the.1994 edition) is changed to "stepped shaft for shaft
"Schematic diagram of the coaxial seal and groove type" and added "Schematic diagram of the seal" (see Figure 3);
i) Modified and supplemented the groove dimensions and tolerances of the stepped coaxial seals for shafts, and added the "Specification Code" (see Table 3,.1994)
Table 2 of the year edition);
j) The size of the rounded corner r has been modified (see Table 1, Table 2, Table 3, and Table 1 and Table 2 of the.1994 edition);
k) Modified the lead-in angle length (see Table 4, Table 3 of the.1994 edition);
l) The gap has been revised (see Table 5, Table 4 and Table 5 of the.1994 edition).
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., Yantai Future Automatic Equipment Co., Ltd., Suzhou Meifulixin
Material Technology Co., Ltd., Ningguo Ruipu Sealing Co., Ltd., Northwest Rubber and Plastic Research and Design Institute Co., Ltd.
The main drafters of this document. Qiu Zhaopei, Cao Changzhen, Fang Yong, Tang Yingda, Lu Xinchun, Guo Xuejing, Pan Yuxun.
This document was first published in.1994, and this is the second revision.
Introduction
The coaxial seal and its installation groove, the support ring and its installation groove are part of the piston or piston rod dynamic sealing device, and its size is
Compatible with each other, GB/T 15242 "hydraulic cylinder piston and piston rod dynamic seal device size series" stipulates the dimensions and specifications of these components.
Poor, consists of four parts.
---Part 1.Coaxial seal size series and tolerances. Specify coaxial seals and related dimensions for pistons or piston rods
And tolerance.
---Part 2.Support ring size series and tolerances. Specify the supporting ring for the piston or piston rod and its related dimensions and tolerances.
---Part 3.Coaxial seal groove dimension series and tolerances. Specifies the installation groove of the piston or the coaxial seal on the piston
Relevant dimensions and tolerances.
---Part 4.Support ring installation groove dimension series and tolerances. Specify the relevant dimensions and dimensions of the support ring on the piston or piston rod
tolerance.
Hydraulic cylinder piston and piston rod dynamic sealing device size series
Part 3.Coaxial seal groove dimension series and tolerances
1 Scope
This document specifies the symbols, types, size series and tolerances, installation guidelines of the coaxial seal installation grooves for hydraulic cylinder pistons and piston rods.
The axial length and clearance of the entrance angle.
This document is applicable to square coaxial seals and hole sets for holes that are installed in the piston and piston rod of reciprocating hydraulic cylinders for sealing purposes.
Contract shaft seals, stepped coaxial seals for shafts.
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 15242.1 Hydraulic cylinder piston and piston rod dynamic seal device size series Part 1.Coaxial seal size series and tolerances
GB/T 17446 Vocabulary of fluid transmission systems and components
3 Terms and definitions
The terms and definitions defined in GB/T 15242.1 and GB/T 17446 apply to this document.
4 Symbols and abbreviations
The following symbols and abbreviations apply to this document.
b --- groove width;
D ---Hydraulic cylinder bore or bottom diameter of piston rod seal groove;
d --- the diameter of the piston rod or the bottom diameter of the piston seal groove;
d1 --- The diameter of the shoulders on both sides of the piston seal groove (d1=D-2F);
d2 ---The diameter of the shoulders on both sides of the piston rod seal groove (d2=d 2F);
F ---Gap;
H ---groove depth;
L --- the axial length of the installation lead-in angle;
R,r---round corner radius;
TF ---square coaxial seal for hole;
TJ ---stepped coaxial seal for shaft;
TZ ---Combined coaxial seal for hole.
5 Groove type, size series and tolerances
5.1 Groove type, size series and tolerances of square coaxial seals for holes
5.1.1 The schematic diagram of the seal and the groove type are shown in Figure 1.
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