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Database: 189759 (19 Oct 2025)
JB/T 7939-2010 English PDF
JB/T 7939: Evolution and historical versions
Standard ID
Contents [version]
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Standard Title (Description)
Status
PDF
JB/T 7939-2010
English
279
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3 days [Need to translate]
Hydraulic fluid power. Cylinders. Bore and rod area ratios
Obsolete
JB/T 7939-2010
JB/T 7939-1999
English
279
Add to Cart
3 days [Need to translate]
Hydraulic fluid power. Cylinders. Bore and rod area ratios
Obsolete
JB/T 7939-1999
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Basic data
Standard ID
JB/T 7939-2010 (JB/T7939-2010)
Description (Translated English)
Hydraulic fluid power. Cylinders. Bore and rod area ratios
Sector / Industry
Mechanical & Machinery Industry Standard (Recommended)
Classification of Chinese Standard
J20
Classification of International Standard
23.100.20
Word Count Estimation
7,761
Date of Issue
2010-02-11
Date of Implementation
2010-07-01
Older Standard (superseded by this standard)
JB/T 7939-1999
Quoted Standard
GB/T 2348; GB/T 17446
Adopted Standard
ISO 7181-1991, MOD
Regulation (derived from)
Engineering (2010) No. 82; industry standard filing Notice 2010 No. 5 (No. 125 overall)
Issuing agency(ies)
Ministry of Industry and Information Technology
Summary
This standard specifies the single rod hydraulic cylinder area ratio of the two chambers. This standard applies to single rod cylinders, rodless cylinder corresponding to the rod chamber and two-chamber cavity standard ratio of the effective cross-sectional area.