Hydraulic hose is hose that can convey the hydraulic fluid between components in hydraulic systems. It is like the blood vessels of the hydraulic system, transmitting power to various components，maintaining the normal operation of machinery. Hydraulic hoses are also used for high pressure applications because of their one or more layers of reinforcement. The inner tube layer is usually made of high-pressure and oil-resistant materials (such as synthetic rubber), the reinforcement layer is generally made of steel wire braiding or spiral winding to improve the compressive strength of the pipeline, and the outer cover can protect the hydraulic pipe from damage by the external environment.
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There are two common ways of classifying hydraulic hoses, one is according to the pressure rating and the other is according to the material.
According to the pressure rating can be divided into:
Low pressure hydraulic hose: Below 1.6Mpa and most commonly with textile/fabric braid reinforcement
Medium pressure hydraulic hose: Up to 10Mpa and most commonly with wire braid reinforcement
High pressure hydraulic hose: 10Mpa–100Mpa with a mix of wire braid and spiral braid reinforcement
Ultra-high pressure hose is a hose with a pressure exceeding 100Mpa
According to the material is divided into:
Steel wire braided hydraulic hose: usually one or two layers of steel wire braided hydraulic hose, with easy to install and easy to operate.such as SAE 100R1, SAE 100R2, SAE 100R17.
Steel wire reinforced hydraulic hose: usually four or six layers of steel wire reinforcing layer, with excellent pressure resistance. such as DIN EN856 4SH, SAE 100R9.
Textile reinforced hydraulic hose: one or two layers of textile braided hydraulic hose with light weight and high flexibility. such as SAE100R3, SAE100R6.
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Thermoplastic hose: it is made of thermoplastic material, they are usually used for high-pressure applications. They are lightweight, flexible and wear-resistant. such as SAE100R7, SAE 100R8.
Metal hoses: The metal braided hose can withstand extremely high temperatures and pressures and is commonly used in harsh working environments, such as PTFE hose.
The main role of hydraulic hose in a hydraulic system is to act as a delivery pipe for hydraulic fluid. It delivers the hydraulic fluid produced by the hydraulic pump from the pump to the actuating elements (e.g., hydraulic cylinders, hydraulic motors, etc.), and carries the pressure and flow in the system to ensure the normal operation of the hydraulic system.
Hydraulic hose is a very important pipeline widely used in various industrial fields. Here are hydraulic hose applications:
Choosing the right hydraulic hose is very important for hydraulic systems. When select the right hydraulic hoses, you should carefully consider according to the actual situation. Consider the working environment, working pressure, working temperature and the medium being transported, as well as the matching of joints and components, and select hydraulic hoses of appropriate material, size and others.
Installation and maintenance of hydraulic hoses are critical to ensuring optimal system performance and safety. First, prepare the appropriate hydraulic hose and hydraulic fittings, ensure their appropriate length and cleanliness. If it is a disposable hydraulic fitting, you may need a crimping machine. If it is a reusable fitting, you only need a vise. Connect the hydraulic fittings and the hydraulic hose together. Connect the hydraulic connector at the other end to the equipment of the hydraulic system and tighten it. And fix the hydraulic hose to avoid twisting or tension. There should be a certain range of movement when the pulse is generated. Precautions for installation are also necessary. Only by considering all aspects can the normal operation of the hydraulic pipe be guaranteed.
The lifespan of hydraulic hoses is limited, and when they reach the end of their lifespan, they need to be replaced in time, otherwise it may cause more serious problems. Regular maintenance and timely replacement are key for ensuring the normal operation of the hydraulic system. It is recommended that the hydraulic hose be replaced every 2-5 years, and the specific time should depend on the actual application.
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