|
About Hydraulic Hose
Hydraulic hose is specifically designed to convey fluid
to hydraulic components, valves, actuators, and tools. It needs to be
flexible and strong enough to handle high pressures under demanding operating
conditions.
Hydraulic Hose Assemblies
Hose assemblies should be inspected regularly for leaks, kinks, blisters,
gouges, abrasion and other damage. Damaged or worn assemblies must be
replaced immediately.
Increase the life of a hose assembly by following
good maintenance practices.
|
 |
| Hose
Handling & Installation
Hydraulic hose assembly installations should comply with hydraulic hose
routing and plumbing standards per SAE J1273 for the proper application
of hose assemblies. Do not bend hose to a radius smaller than the minimum
recommended. Do not subject it to tension or torque. Always restrain,
protect or guide hoses with clamps if necessary.
Working Pressure
The hydraulic system pressure should not exceed the rated working pressure
of the hose. Pressure surges or peaks exceeding the rated working pressure
are destructive and must be taken into account when selecting a hose. |
|
Temperature
Range
Do not expose the hose to internal or external temperatures exceeding
the recommended limits. Consult additional technical data when hydraulic
fluids contain emulsions or solutions. The fluid manufacturer's recommended
maximum operating temperature for any given fluid must not be exceeded,
regardless of hose temperature range.
Fluid Compatibility
The hydraulic assembly (tube, cover, reinforcement and couplings) must
be fluid compatible. The correct hose must be used because phosphate ester
and petroleum base hydraulic fluids have drastically different chemical
characteristics. Many hoses are compatible with one or another, but not
all fluids. |
|
Hose Size
Hose size (Inside Diameter) must be capable of handling the required flow
volume. Too small an I.D. for a given volume of flow results in excessive
fluid pressure and heat generation which can result in tube damage.
Hose Shelf Life
Storage environment, along with rubber materials can vary the shelf life
limit. Proper storage precautions can result in three to five years shelf
life. Beyond this time there can be significant service life decrease, depending
on storage environment variables. Hose should be stored in a cool, dry area
never exceeding +38° C (100° F). Hose should be stored away from
direct sunlight, rain, heaters, and electrical equipment. Oil, solvents,
corrosive materials, and fumes can also have an affect.
A poor storage environment can deteriorate hose, reduce performance, and
may lead to premature failure. |
