A hydraulic hose assembly is a series of hoses used to convey fluids and the pressure it generates helps power machines. Hydraulic fluid can be passed between using pipes and hydraulic hoses and the hydraulic hose assembly is one of the most important components of a hydraulic system.
What is a Hydraulic Hose Assembly?
Hydraulic hose assembly, also called hose assembly, is an assembly structure made of the two ends of the hose reinforced by steel wire braiding or winding and a metal connection joint assembled by buckling.
The steel wire reinforcement layer of rubber hose - generally divided into steel wire braiding and steel wire winding, the number of reinforcement layers - generally from 1 layer to a maximum of 6 layers, of which, the inner rubber layer to accommodate the fluid medium, the reinforcement layer is the skeleton to ensure pressure, the outer rubber layer to protect the reinforcement layer.
Selection of Hydraulic Hose Assembly is the Need to Consider Factors
Hose size.
Different manufacturers offer different sizes of hydraulic hoses. The engineer is responsible for analyzing the hose requirements and selecting the right hose, inside diameter is the key factor in hose selection, larger and smaller diameter hose will affect the system performance.
That is, if you choose a larger diameter hose, it will reduce fluid pressure, similarly, smaller diameter hose will reduce fluid flow.
Temperature and pressure.
The operating environment of a hydraulic system can vary. It is necessary to consider the external and internal temperature of the hose. If the hydraulic system used in the external temperature is high, it will lead to damage to the hose cover and gradually lead to hose leakage. Not only that, but if any system works continuously without an oil cooler, the internal temperature will be higher and cause the inner tube to wear. Therefore, it is necessary to consider how much pressure the hose can withstand.
Fluid compatibility.
The choice of hydraulic fluid depends on the system application. Before selecting a fluid, consider the various properties of the fluid, the fluid plays a key role in improving the life of the hose, most mineral oils are compatible with ordinary hose. However, users still need to consider fluid compatibility when selecting hoses and fittings.
The Use of Hydraulic Hose Assembly Note Things
1、Working pressure: the maximum pressure that can withstand long-term stable work; the pressure value must be equal to or greater than the maximum pressure of the hydraulic system (pulse pressure or peak pressure of the hydraulic system).
2, test pressure: 2 times the working pressure, holding pressure for 60 seconds, no leakage, no pressure value drop.
3, burst pressure: generally refers to 4 times the working pressure value.
4、Temperature range: generally refers to -40°C to +100 "C.
5, the basic model specification of the hose to the inner diameter of the hose, that is, rounded nominal diameter DN, to identify.
6, hose bending radius: refers to the maximum pressure under the continuous work of the minimum bending radius can be selected, less than the recommended. The use of the bending radius will seriously affect the strength of the hose. In addition, the minimum straight length of the transition of the hose and hose connector connection (shown D) should be greater than 1.5 times the outside diameter of the hose.
7, hose assembly layout: should avoid hose due to stretching, compression, twisting, or friction at sharp corners and damage, should not be used in the twisted state.
8, the hose assembly storage: by the temperature, light and other factors, the validity period is difficult to determine.
Din standard, the assembly of the hose used must be within four years of production, hose assembly production, the use of life shall not exceed 6 years, of which in 6 years, the storage time shall not exceed 2 years.
ISO standard, the hose and hose assembly validity period shall not exceed 10 years.
Hose after storage, if the visual inspection of the surface cracking, rust, etc., should be done before use pressure test. Among them, the validity of the 0-ring inside the joint shall not exceed 2 years.
9、Routine inspection: If the outer rubber layer of the hose is found to become brittle or cracked, it must be replaced as soon as possible.
China's Leading Manufacturer of Hydraulic Hose Assemblies
Do you need to buy a hydraulic hose assembly? XCD is a professional supplier of hydraulic fittings and hoses. For more than 40 years, we have been manufacturing and selling hydraulic hose assemblies for overseas customers. If you need to buy, you can contact our overseas sales team. Our sales staff will give a quotation and specific product specifications.
