AS 2671:2021 pdf free download – Hydraulic fluid power -General rules andsafety requirements for systems and their components (1so 4413:2010,MOD)

AS 2671:2021 pdf free download – Hydraulic fluid power -General rules andsafety requirements for systems and their components (1so 4413:2010,MOD).
AS 2671 specifies general rules and safety requirements for hydraulic Iluid power systems and components used on machinery as defined by ISO 12100:2010, 3.1. It deals with all significant hazards associated with hydraulic fluid power systems and specifies the principles to apply in order to avoid those hazards when the systems are put to their intended use.
NOTE I See Clause 4 and AnnexA.
The significant hazard noise is Incompletely dealt with in this International Standard.
NOTE 2 NoIse emission depends especially on the Installation of hydraulic components or systems into machinery.
This International Standard applies to the design, construction and modification of systems and their components, also taking into account the following aspects;
a) assembly;
b) installation;
c) adjustment;
d) uninterrupted system operation;
e ease and economy of maintenance and cleaning;
f) reliable operation in all intended uses;
g) energy efficiency; and
h) environnient.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1219-1, Fluid power systems and components — Graphic symbols and circuit diagrams — Part 1:
Graphic symbols for conventional use and data-processing applications
ISO 1219-2, Fluid power systems and components — Graphic symbols and circuit diagrams — Part 2:
Circuit diagrams
ISO 4021, Hydraulic fluid power — Particulate contamination analysis — Extraction of fluid samples from lines of an operating system
ISO 4406, HydraulIc fluid power — Fluids — Method for coding the level of contamination by solid pa rocks ISO 5598, Fluid power systems and components — Vocabulary
ISO 6149-1, Connections for hydraulic fluid power and general use — Parts and stud ends with ISO 261 metric threads and 0-ring sealing — Part 1: Ports with truncated housing for 0-ring seal
5.4.1.6 Working pressure range
II there are any restrictions on the working pressure range at which the pump or motor may be used. these shall be defined in the technical data; see Clause 7.
5.4.1.7 InstallatIon
Hydraulic pumps and motors shall be Installed so that
a) through the arrangement and selection of piping connections external leakage is prevented; tapered pipe threads or connection mechanisms that require sealing compounds shall not be used;
b) loss of prime or case lubrication is prevented during periods of inactivity;
c pressure at the pump inlet port is not less than the minimum specified by the pump supplier for the operating conditions and the system Fluid used;
d) they are either protected from predictable external damage, or suitably guarded If a hazard results.
5.42 Cylinders
5.42.1 Resistance to buckling
Attention shall be given to stroke length, loading and cylinder mountings In order to avoid bending or buckling of the cylinder piston rod at any position; see ISO/TS 13725.
5.4.2.2 DimensIoning
The design of cylinders shall take account of the maximum loads and pressure peaks that are expected.
5.4.2.3 Mounting ratings
All load ratings shall take account of the mounting types.
NOTE Cylinder rated pressures rc’llcci only the capability of the prrssure.containing envelope and not I he force transmitting capability ol mounting conIguratlons.
5.4.2.4 Loading by position stop
When a cylinder is used as a position stop, the cylinder shall be sized and the mounting selected on the basis of the maximum loading induced by the machine member restrained.
5.4.2.5 Resistance to shock and vibration
Any attachment mounted on or connected to a cylinder shall be assembled in such a way that resists loosening caused by shok. vibration, etc.. while in use.
5.4.2.6 UnIntended pressure Intensilkatlons
Means shall be provided In the system for preventing unintended pressure Intensificatlons caused by diflerences in effective cylinder areas from exceeding rated pressure limits.