SAE J1273:2019 pdf free

SAE J1273:2019 pdf free.Recommended Practices for Hydraulic Hose Assemblies
Electrocution could occur if hose conducts electricity through a person. Most hoses are conductive. Many contain metal or have metal hose fttings attached. Even nonconductive hoses can be conduits for electricity if they carry conductive fluids.Be aware of routing or using hose near electrical sources. When this cannot be avoided, select appropriate hose. Nonconductive hoses should be considered. SAE J517 – 100R7 and 100R8 hoses, with orange covers marked “nonconductive” are available for applications requiring nonconductive hose.
A wide variety of interacting factors influence hose service life and the ability of each hydraulic fluid-power system to operate satisfactorily, and the combined effects of these factors on service life are often unpredictable. Therefore, hydraulic hose specification documents should not be construed as design standards. For applications outside the specifications in SAE J517, SAE J514, or other relevant design standards, performance of hose assemblies should be determined by appropriate testing.
Carefully analyze each system. Then design routings and select hose and related components to meet the system-performance and hose-service-life requirements, and to minimize the risks of personal injury and/or property damage.
Consider the following factors:Excessive pressure can accelerate hose assembly failure. Analyze the steady-state pressures, and the frequency and amplitude of pressure surges, such as pulses and spikes. These are rapid and transient rises in pressure which may not be indicated on many common pressure gages and can be identified best on high-frequency-response electronic measuring instruments.
For maximum hose assembly service life, hose selection should be based on a system pressure, including surges, that is less than the hose assembly maximum working pressure.
The maximum working pressure of a hose assembly comprised of hose and hose fttings shall not exceed the lower of the maximum working pressure specified for the respective hose and the connection end of the hose ftting.SAE J1273 pdf free download.