ISO 7241:2014 pdf download.Hydraulic fluid power — Dimensions and requirements of quick-action couplings
1 Scope
This International Standard specifies the interface dimensions and basic performance requirements for two series of hydraulic quick-action couplings. Both series are in widespread use and have similar technological advantages. Series A is used predominantly in Europe and is preferred worldwide for agricultural and forestry machinery, and this International Standard also specifies additional requirements for Series A for use in agricultural machinery applications covered in ISO 5675. Series B is used predominantly in North America and in the chemical industry.
2 Normative references
The following documents, in whole or in part, are referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2944, Fluid power systems and components — Nominal pressures
ISO 3448, Industrial liquid lubricants — ISO viscosity classification
ISO 5598, Fluid power systems and components — Vocabulary
ISO 5675, Agricultural tractors and machinery — General purpose quick-action hydraulic couplers
ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method (scales A, B, C, D, E, F, G, H,K, N, T)
ISO 18869 1) , Hydraulic fluid power — Test methods for couplings actuated with or without tools
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5598 and the following apply.
3.1 coupling valve opening force
maximum force required to fully open the hydraulic quick-action coupling valve when the pressure inside the coupling is at zero
3.2 female half
receptacle portion of a quick-action coupling which normally includes the mechanism to lock the two halves of quick-action coupling together
3.3 interface
that portion of a coupling half that establishes and controls interchangeability
3.4 male half
probe portion of a quick-action coupling which fits and locks into the female half
7 Workmanship
The couplings shall be free from defects such as cracks and porosity and shall be deburred. Sharp edges on the outside shall be removed. All machined surfaces shall have a material removal rate surface roughness value of MRR Ramax 3,2 µm, except where otherwise specified in the figures. The finishing of the sealing area in contact with ports and stud ends shall conform to the respective connector standards.
8 Designation
Hydraulic quick-action couplings conforming to this International Standard shall be designated as follows:
a) the word “Coupling”;
b) a reference to this International Standard (i.e. ISO 7241), followed by a spaced hyphen;
c) the series designation (A or B), followed by a spaced hyphen;
d) the size;
e) the designation AG (for agricultural service), if needed.
EXAMPLE A Series A hydraulic quick-action coupling of size 12,5 is designated as follows:Coupling ISO 7241 – A – 12,5
9 Marking
Couplings conforming to this International Standard shall be permanently marked at a minimum with the manufacturer’s name, logo, or product identification.
10 Identification statement (reference to this International Standard)
Use the following statement in test reports, catalogues, and sales literature when electing to comply with this International Standard:
“Hydraulic quick-action coupling dimensions and requirements conform to ISO 7241, Hydraulic fluid power — Dimensions and requirements of quick-action couplings.”
ISO 7241:2014 pdf download
