BS ISO 8426:2008
Current
The latest, up-to-date edition.
Hydraulic fluid power. Positive displacement pumps and motors. Determination of derived capacity
Hardcopy , PDF
English
29-02-2008
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1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
5 Test installation
6 General test conditions
7 Test and evaluation procedures
8 Test report
9 Identification statement (reference to this International
Standard)
Annex A (normative) - Measurement accuracy classes
Annex B (normative) - Calculation of derived capacity using the
zero-pressure intercept method
Bibliography
Describes the methods of determining the derived capacity of hydraulic fluid power positive displacement pumps and motors under steady-state conditions and at defined, continuous shaft rotational frequencies.
| Committee |
MCE/18/-/8
|
| DevelopmentNote |
Supersedes BS 7250(1989) & 06/30128779 DC. (02/2008)
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard specifies the methods of determining the derived capacity of hydraulic fluid power positive displacement pumps and motors under steady-state conditions and at defined, continuous shaft rotational frequencies.
Units can be tested as a positive displacement pump, with mechanical energy applied to the shaft and hydraulic energy obtained at the outlet fluid connection, or as a motor, with hydraulic energy supplied to the inlet fluid connection and mechanical energy obtained at the shaft.
NOTE Measurement accuracy is divided into three classes A, B and C, which are explained in .
| Standards | Relationship |
| ISO 8426:2008 | Identical |
| ISO 5598:2008 | Fluid power systems and components Vocabulary |
| ISO 4409:2007 | Hydraulic fluid power Positive-displacement pumps, motors and integral transmissions Methods of testing and presenting basic steady state performance |
| ISO 4391:1983 | Hydraulic fluid power Pumps, motors and integral transmissions Parameter definitions and letter symbols |
| ISO 1219-1:2012 | Fluid power systems and components — Graphical symbols and circuit diagrams — Part 1: Graphical symbols for conventional use and data-processing applications |
| ISO 3448:1992 | Industrial liquid lubricants — ISO viscosity classification |
| ISO 6743-4:2015 | Lubricants, industrial oils and related products (class L) Classification Part 4: Family H (Hydraulic systems) |
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