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- OEM Standards And ISO Certification
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Excavator Hydraulic Hose Manufacturing Process
XuGong KS Excavator Hydraulic Hose Factory Overview
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Excavator Hydraulic Hose – The Definitive FAQ Guide
The hydraulic hose FAQ guide is a one-stop resource for answers to common questions about this equipment. It covers everything from fluid to fittings and everything in between and provides information on typical hydraulic hose applications. This guide will help you with insights on excavator hydraulic hoses, shapes, layers, features, failure reasons and much more. So, stick to this guide if you want to learn more about excavator hydraulic hoses.
1. What is an excavator hydraulic hose?
An excavator hydraulic hose is a flexible tube that supplies and transfers pressurized fluid for power transmission in excavation and construction equipment. Comprised of an outer casing, inner liner, and wire braid reinforcement, excavator hoses must withstand extremely high pressure and temperatures. Lubrication must be constantly pumped through the hose to ensure no wear occurs at the seals.
An excavator hydraulic hose provides a fluid connection between an excavator at one end and a piece of equipment or machine at the other. It increases the flexibility of work operations by allowing an excavator to move around relatively quickly, especially when working in confined spaces. Hydraulic hoses are designed to protect against abrasions, kinks, leaks, or damage to the internal hydraulics.
2. What are the sizes of excavator hydraulic hoses?
A variety of sizes of excavator hydraulic hoses are available. Hose sizes, expressed in numbers of millimeters or inches. The working pressure for different applications varies based upon the hose diameter, the composition of the fluid used, and the system’s complexity.
Hose application typically concerns the elasticity and flexibility of hydraulic hoses, which is essential to determine whether or not they can withstand machine vibration and strain caused by the excavator’s weight and attachments. Some of the sizes that are widely used are listed in the table below:
|Sr. No.||Part No.||Hose Size Inch||Hose Size Mm.||Max Working Pressure Psi||Max Working Pressure MPa||Minimum Blend Radius Inch|
3. Which materials are used in making excavator hydraulic hoses?
Excavator hydraulic hoses are made of many different materials. The type of materials used will determine what the excavator hydraulic hose will be used for. Since excavator hydraulic hoses are often used to transport hot fluids, the type of material is essential. Many kinds of excavator hydraulic hoses on the market are constructed using several different metals wire, fabric, synthetic materials. Stockings may be made from one of the following materials:
- Elastomeric materials
- Nylon or polyester yarns
- Special additives
- Stainless steel wires
- PTFE and rubber
- Polyurethane or PVC blend
The materials used in making the hoses are designed to have different characteristics to match with varying demands of excavator hydraulic systems. Most modern hoses are synthetic rubber resin that has excellent mechanical properties at elevated temperatures. Most excavator hydraulic hoses are classified by their service temperature, defined by the maximum outside air temperature that can be withstood without hydraulic fluid deterioration.
4. What are the shapes of excavator hydraulic hoses?
The shapes of excavator hydraulic hoses depend on the types of machines they are used for. A single device might have a variety of hydraulic hoses with different configurations and connectors.
Hoses are typically made in the factory by extrusion, so they are usually round in shape. However, different manufacturers may use other methods to manufacture their hoses, so their conditions vary slightly. The main identifiable parts of an excavator hydraulic hose include adaptors, elbows, flares, valves, nipples, tees, couplings, clamps. The hose assembly also comes in three primary forms: convoluted, corrugated, and spiral. For each of these types, there are many different variations for particular purposes.
5. What are the applications of excavator hydraulic hoses?
Excavator hydraulic hoses are used in excavators. They are used to pass power from the engine of the excavator to different components. For example, they help lift the bucket on the excavator. When you start digging or loading, power has to go to the blade or bucket and other components like the bucket cylinder. They also use hydraulic power to various excavator attachments, including excavator rake, excavator grapple rake, excavator ripper, excavator hammer etc.
The excavator arm and excavator boom have hydraulic connections, which are these hydraulic hoses. These hoses help them to extend or retract. Hoses carry these fluids out of the engine and transport them where they’re needed. Thus, hoses are an essential component of an excavator.
6. What are the features of excavator hydraulic hoses?
There are several features associated with an excavator hydraulic hose. Some of the main features are as follows: These hoses are made of polyurethane or polyethylene for lightweight durability, resistance to abrasion, kinking resistance and chemical resistance. Depending on their application, the hoses can be used with hydraulic oil of up to 200 degrees Fahrenheit.
The hoses are available in three different ratings for different pressure levels: 1500 psi, 3000 psi and 5000 psi. Excavator hydraulic hoses must provide the fluid and keep it from leaking. They are equipped with protective properties like stainless steel wire braiding, brass fittings, polychloroprene rubber (PR) jackets, and lead-in wires to protect the hoses from cuts caused by sharp edges.
7. What are the maintenance requirements of excavator hydraulic hoses?
Excavator hydraulic hoses are the lifeline to hydraulic excavators, providing pressurized fluid to all movements. This high-pressure hose must be protected against abrasion, puncture, and kinks to prevent early failure. As outlined in excavator hydraulics service, manual hydraulic system maintenance shall include:
- Proper hose installation;
- Tag removal for required replacement;
- Inspecting the entire hydraulic hose system for damage, corrosion, leakage, and loose mounting hardware;
- Repairing damaged lines;
- Operating the equipment to check pressure at valves;
- Inspecting nozzle clamps;
- She was inspecting connectors for leaks; replacing necessary parts.
They have a wide range of pressures and temperatures, so they need to be appropriately managed, serviced regularly, and replaced before reaching the end of their life cycle.
8. Is noise associated with excavator hydraulic hoses?
Yes, manufacturing scraps are every day for hydraulic hoses under certain conditions. When an excavator’s dig bucket is raised, it creates a significant force that may produce intermittent cracking noises within the excavator hydraulic hoses. These noises are not indicative of internal leakage or failure of the hydraulics.
Noise is amplified in cold weather as oil becomes more viscous, causing increased resistance and slower movement of hydraulic fluid, increasing the pressure and torque on the hose connections. In general, turbulent flow can produce more noise by breaking up sound waves into more audible components—a process is known as turbulence-induced spectral broadening—and more noise is produced when turbulence is excited more often by terrain challenges.
9. What is the life associated with excavator hydraulic hoses?
The life of the hydraulic hose depends on the operating conditions at which it is used. The most crucial factor in determining the life of the hose is the temperature at which it is used. A hose’s ability to perform its intended purpose is almost always directly dependent on the internal condition of the hose.
Unlike high-temperature hoses that may withstand significant external damage before failing, hydraulic hoses are more sensitive to external damage because of their thin walls. For this reason, all external damage has a direct impact on life expectancy. In general, the life of an excavator hydraulic hose lies in the range of 5 to 9 years.
Excavator hydraulic hoses are subjected to extreme temperatures, bending, crushing, abrasion and kinking. This is why it’s essential to use the heavy-duty hydraulic hose that has been designed for the job. Ultimately, your choice of the hose can mean the difference between a hose with a short life span or one with a long-life cycle.
10. What causes failures of excavator hydraulic hoses?
Hydraulic hose failures occur due to several reasons. It is essential to understand this to avoid having your hydraulic system fail when operating an excavator. Excessive temperatures caused by hot working environments, overfilling excavator hydraulic clutches, exorbitant flow rates, and hydraulic hoses’ clutched operation may cause failures.
There are many ways hydraulic hoses can fail on equipment. Hose wear is caused by:
- Damaged internal hose components,
- Internal hole wear,
- Abrasion wear,
- Mechanical damage due to chafing or misalignment,
- External foreign matter that punctures the tube,
- Overheated conditions that damage the hose materials.
Hose fittings, the hydraulic hoses’ end connections, also have a high failure rate. Hose fitting failures usually occur because of overheating caused by thermal expansion and contraction, which puts a lot of stress on the metal fittings.
11. What are the issues associated with excavator hydraulic hoses?
There are several issues associated with your excavator hydraulic hoses. Some of the main problems are as follows: Hydraulic hoses produce considerable pressures and high shear forces within components, resulting in abrasion damage to the interior liner, which can propagate through the entire length of the hose. The film formation temporarily suspends all internal fluid movement, extending to the entire rig if hoses are allowed to sit idle for long periods without flushing.
They are subject to abrasion from irregular wearing surfaces. They can be exposed to scrapings from rocks, gravel, and cuts from sharp objects. Under these conditions, heat, pressure, and kink loads may form cracks in the hoses leading to the separation of the hoses’ components.
12. What is the role of nuts in excavator hydraulic hoses?
The nut is an essential part of virtually every hydraulic hose assembly and serves a variety of purposes. The nut is the part of the excavator hydraulic hose which wraps around the threads of a hydraulic pipe or fitting. The cap nut is the threaded cap that screws onto the end of the excavator hydraulic hose to prevent fluid from leaking out.
The sealing washer screws onto a fitting and covers a smooth surface creating a leak-free connection between components. It also protects against high-pressure fluids, which can cause leaks to develop in other parts of the assembly. Finally, the nut allows for easy removal if an operator performs periodic maintenance on their hydraulic components.
13. What is the role of spring in excavator hydraulic hoses?
The springs are used to compensate for the unsteady pressure of movable parts with high speeds. To ensure the accuracy of the equipment, hydraulic hoses must be accurately designed; the accuracy is determined by the degree of flexibility of the internal tube. And internal diameter, length, wall thickness also needs to be carefully crafted. If there is no spring in hydraulic hoses, it will be difficult to outlet pressure exactly to give perfect effect.
The spring in excavator hydraulic hoses is used to resist bending or stretching under pressure, especially in fire-resistant hydraulic hoses. The more spring or stiffness they have, the more force they must withstand without damaging the walls of the rubber hose.
14. What is the role of bush on excavator hydraulic hoses?
The bush is necessary on excavator hydraulic hoses because of the dynamic nature of its equipment. Excavator hydraulic hoses are increasingly chosen for their bush characteristics. Bushes are at the same time mechanical function, rust prevention, vibration damping, medium separation, and bonding of the various layers of hoses.
The bush makes sure that no excessive pressure builds up inside the hose, damaging hose components or hose construction. The bush can be changed to various specifications, and the diameter of the brush is about 25mm-35mm. The height can be 15-50mm, and that of the thread 10~30mm. They protect the hose from damage during sudden movements. Ensure all your excavator hydraulic hose assembly components are in excellent working condition for your safety concern.
15. What is the role of threads on the excavator hydraulic hoses?
The threads play an essential role in the hydraulics system, enabling the hydraulic hose to connect to the fitting. The lines on the excavator hydraulic hoses are attached to the coupler or swivel or with adapters. Those threads form an interface with an external source of pressure.
The fluid in the hose acts like a liquid spring, alternately pressing against and releasing tension on various hydraulic system components with each cycle of fluid movement caused by the load applied to the system. The threads types vary, including clockwise and anticlockwise depending on the types of fittings; some fittings have a different configuration of threads to ensure a tight fit.
16. What is the role of thickness on the excavator hydraulic hoses?
The thickness of the hydraulic hose is determined based on the operating pressure, fluid temperatures, flow rates, ambient temperature, expected swell pressures, and the abrasive factors expected in actual operation. The hydraulic hoses have to stand up against a variety of conditions. If the thickness of the hydraulic hose cannot bear this load, there will be leaks caused by high pressures.
And if the excavator hydraulic hose is thinner than it should be, this means that there will be fewer oil flow passages in it, and lubrication cannot be adequate. The thickness of hydraulic hoses determines how many times you can turn on/off your machine pump without worrying about leaks.
Thickness is one of the most important factors when choosing hydraulic hoses. The sheath is supported by an internal wire braid, which increases the pressure rating of the hose beyond what would typically be possible in its wall thicknesses for your applications.
17. From where do excavator hydraulic hoses receive fluid?
The hydraulic hoses receive fluid from the hydraulic pump. The hydraulic pump comprises of cylinder and piston arrangement, which pressurizes the hydraulic fluid. The hydraulic pump receives its operational power from the motor arrangement, which ultimately receives its driving power through the electrical system of your excavator.
The hydraulic pump sucks the hydraulic fluid from the tank and then pumps it to the several excavator equipment or attachments through hydraulic hoses. Before selecting a hydraulic pump, you need to make sure it is according to the as per requirements of your excavator or compatible with your excavator. If you chose the wrong one, you could not perform the intended function with your excavator.
18. How do excavator hydraulic hoses protect fluid?
Excavator hydraulic hoses are designed to withstand all conditions that your equipment will face daily. They protect the fluid from the environment and dissimilar materials. It also helps protect against impurities found in dirt and mud and oil and water mixtures found around digging sites.
The hydraulic hoses protect fluid from abrasion, heat, and other outside forces. Excavator hydraulic hoses are constructed with a combination of high-strength materials designed to resist the harsh, demanding conditions associated with this industry. A wide range of hose sizes and configurations is available to meet a virtually endless list of applications.
19. What is the role of plugin excavator hydraulic hoses?
Plugin excavator hydraulic hoses are used for all applications where standard connections can’t be used, for instance, when you need to extend the hose length. Plugin excavator hydraulic hoses are used to transfer fluid between an excavator and other hydraulic fittings. They are sometimes referred to as plugin hoses, auto plugs, or quick connectors.
Plugin hydraulic hose is a kind of injection molding with a single-layer spiral structure and a plugin half type at the two ends. Plug-In Hose Assemblies have been designed to simplify the assembly of hydraulic hoses. The plugin system is the standard for most modern excavators and high-speed hydraulic hose assemblies. They reduce costs because there is no need to buy expensive extra hoses.
20. How many layers exist in excavator hydraulic hoses?
Excavator hydraulic hoses consist of several layers. A hydraulic hose consists of three parts: rubber, wire braid, and an outer sheath at the most basic level. This combination helps protect the hose from damage due to abrasion, prevent leakage, and maintain its structural integrity. Excavator hydraulic hoses are made by extrusion, braiding, and winding methods.
The winding methods extrude the hydraulic hose from a thermosetting plastic resin. The hydraulic hose assembly can have two to six layers depending on the wound and the material used. The twisting of these layers causes the excavator hydraulic hose to have a helical coil which gives strength in both pressure and torque compared to a non-helical wire construction. Hydraulic hoses are produced in several configurations that include wire wrap, braid, woven fabric or a combination of these methods.
21. Why import excavator hydraulic hoses from china?
Importing excavator hydraulic hoses from china is a good choice. The Chinese manufacturers are competent and affordable.There are several reasons why Chinese manufacturers choose. Some of the main reasons are as follows:
- Their price is low as compared to the developed countries prices
- You can order custom made products just according to your needs and specifications
- No worries related to custom duty
- You will get your product within a short period
- The quality of the product is incredible
- Hydraulic hoses will last comparatively longer as compare to the consequences of other competitors
So, the reasons above will help you make a clear decision about choosing Chinese manufacturers for the importation of products.
22. What is the cost associated with hydraulic hoses?
The cost associated with hydraulic hoses will depend on the kind of hose you purchase, the length of the hose, the type of hydraulic hose you have, and how it is used. Some other factors also influence the cost of excavator hydraulic hose-like material used in manufacturing, design specifications, size, etc. The cost of the hydraulic hose lies in the range of $8 to $50. The material quality varies as the cost increases. Make sure to choose one which is best according to your needs.