Hydraulic hose fittings are under tremendous pressure in hydraulic systems, so it is important to choose the right, high-quality hydraulic hose fittings. Today we will discuss how to choose hydraulic hose fittings.
Introduction to hydraulic hose fittings
Hydraulic fittings are different hydraulic components (pumps, delivery lines, reversing valves, stop valves, hydraulic motors, hydraulic cylinders, and some auxiliary components, such as level gauges, thermometers, pressure gauges and so on) connected to form a closed circuit of the hydraulic system, is to play a connecting role of a fitting.
Types of hydraulic hose fittings
Hydraulic hose fittings are divided into two main categories: hose fittings, hard pipe fittings
Each of these two major categories is divided into several sub-categories.
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Hose hose fittings are divided into one-piece hose joints, snap-on hose joints, internal locking hose fittings, detachable hose joints, and hydraulic fittings.
hose couplings, detachable hose couplings, etc.
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Hard pipe fittings, also known as transition fittings, are divided into DIN ferrule type, metric threaded fittings, imperial threaded fittings, and American threaded fittings.
Inch threaded fittings, American threaded fittings, welding flanges, mining fittings, etc.
How to choose hydraulic hose fittings
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The pressure of both sides
When selecting a fitting, it is necessary to match the additional working pressure and the pressure excluded by itself, so that the fitting selected will be suitable and avoid affecting the normal use of the machine during the working process.
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The inner diameter of the fitting
Generally speaking, the inner diameter of hydraulic hose fittings are between 5-7.5m/s, and the maximum inner diameter cannot exceed 10m/s. According to this range, the inner diameter of the hose can be determined, and it can be used as a reference when choosing. If the total length of the high-pressure hose is constantly tightened under the condition that the clear operation can be unobstructed, the maximum limit cannot exceed 30m.
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The length of the hydraulic hose
Single hose to choose some slightly longer fittings, but the single length can not be less than 5m, otherwise it will affect the normal use of the joint.
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Match with machine high pressure
Because the high-pressure hose fittings in line with the mechanical strength of the case, the overflow area, and the shape will be the same as the hose, this time you can choose the very fast joints to avoid some impact.
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Hydraulic hose fittings material
Carbon steel: #45, #35, #20, 08F. Prices may vary greatly depending on the material used, with the most expensive #20 #35 and the least expensive 08F. Assuming your hydraulic system does not require high pressure, it is more economical to use 08F rather than #20 #35. However, if your hydraulic application is pressure critical, it makes sense to buy #20 #35 #45 to avoid any potential explosions.
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Surface Treatment (Galvanized)
The most common type of plate is galvanized, also known as Cr3+ plating. However, the price may again vary depending on the same plating. Therefore, it is wise to ask about corrosion resistance time, also known as salt spray test hours. Typically, the industry standard is 96 hours, but prices vary. It may be as low as 72 hours or as long as 560 hours or more, depending on your specific needs. On the other hand, there are other types of plating, such as nickel-zinc plating, that are more expensive and certainly suitable for more demanding applications.
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Hydraulic hose fittings standard
The most popular standards for hydraulic hose fittings and adapters are SAE and Eaton. They have different hexagonal shapes because people in different countries use different wrenches. In general, SAE and Eaton standards are interchangeable, but each country does have its own preferences. Therefore, it is wise to determine which standards you use and check accordingly.
Four Tips for Using Hydraulic Hydraulic Hose Fittings
Hydraulic hose fittings are mainly used as connections in hydraulic systems, so they are in a very important position, after all, the pressure and impact of the connection is strong, which is also very demanding. And in the hydraulic hose fittings in the use of the process if there is a wrong operation is easy to cause irreparable consequences
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Avoid using sealant and other items in the joint
Some people in order to ensure the hydraulic hose fittings at the sealing so will be used in or near the hydraulic joint sealant and other items, which can easily cause the internal blockage of the pressure increase and thus the rupture of the phenomenon.
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One-time installation
In the installation of hydraulic hose fittings to pay attention to the installation must be completed at once, to avoid multiple disassembly and installation, which can easily lead to wear and tear at the interface and produce leakage.
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Post-installation testing
When hydraulic hose fittings should be installed after the overall pipeline delivery test, the main purpose is to test whether there is leakage at the hydraulic joints, as well as the overall impact resistance.
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Environmental friendliness in the vicinity of the fitting
The importance of hydraulic hose fittings also makes its environment has certain requirements, the nearby ambient temperature should be maintained as stable as possible to avoid thermal expansion and contraction, while avoiding corrosive gases and liquids in the vicinity to reduce the possibility of leakage caused by corrosion.
The above is the advice we give to choose hydraulic hose fittings, hope you can help.
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