Гідраўлічная арматура are found across all industries and have a wide range of applications. They help control and direct the flow of hydraulic oil within гідраўлічныя шлангі, prevent leakage and maintain pressure.
Learn the basics of hydraulic fittings to select the best one for your hydraulic system. Fitting designs are constantly evolving to meet the safety and performance standards; it is crucial to be familiar with various types of hydraulic fittings to choose the best one based on your application requirements, hose size, and assembly method. Different types of fittings are designed for different applications and specifications.
This article will explore the definition, applications, and the most common types, shapes, and materials of hydraulic hose fittings. Understanding these key fittings types will help you make informed decisions when choosing the right fittings for your hydraulic system.
What is a hydraulic hose fitting?
High-quality industrial hydraulic hose fittings are an essential component of any hydraulic system. The fittings enable hydraulic hoses to be connected to various components and machines and facilitate the transmission of hydraulic oil and power. facilitate the transfer of hydraulic fluid and power
Hydraulic fittings come in various sizes, materials, sealing types, and temperature and pressure resistance grades. Some couplings allow fluid flow, some prevent fluid flow, and some do both.
What are the uses of industrial hydraulic hose fittings?
Due to the wide range of applications of industrial hydraulic hose fittings, they can be used in various industries. These industries include:
Construction and heavy machinery: Hydraulic hose fittings ensure reliable fluid and power transmission in the hydraulic systems of excavators, loaders and cranes, enabling precise control and efficient operation.
Manufacturing and industrial equipment: Machine tools, presses and material handling equipment all require hydraulic hose fittings to ensure smooth operation and minimize downtime.
Сельская гаспадарка: Hydraulic hose fittings effectively transmit power and fluid in tractors, harvesters and irrigation systems, facilitating lifting, steering and control of attachments.
Transportation and automotive: From cars to heavy trucks, hydraulic hose couplings are widely used in braking systems, power steering systems, suspension systems and hydraulic lifts, among others.
Oil and gas: This industry relies on hydraulic hose fittings for drilling, extraction and transportation, providing fluid transfer and control in harsh environments.
Common types of industrial hydraulic hose fittings
There are mainly three types of hydraulic hose couplings: O-ring, mated angle, and tapered thread connectors. Other types of fittings are used for different special applications, but these three are the most common.
O-ring face seal (ORFS)
The ORFS seal fitting is equipped with an O-ring on its flat surface. The sealing is achieved by connecting the O-ring to the plane of the female connector.
ORFS seal fittings are an ideal choice for high-pressure applications, they can provide leak-free connections. They are safe and reliable, can eliminate leaks in hydraulic systems with pressures up to 6000 PSI. ORFS are generally preferred because they are less prone to over-tightening or under-tightening issues.
Mated angle
These fittings have threads, and after the threads there is angled plane (or taper) going around the whole fitting, known as an "flare". The threads can be straight or parallel.
The threads themselves do not form a seal; instead, their function is to push the threaded ends together. When the male and female threaded ends are connected, the flares meet up and are “seated” or sealed together.
Tapered Threads
In a tapered thread fitting, the threads of the male connector are on the outside, while those of the female connector are on the inside. When both are threaded together, the tapered threads will deform. The consequent pressure on the couplings creates the seal.
Under high pressure, the fluid may work through the threads over time and spiral along the threads until it finds its way out. Although plumber tape can be used to prevent this from happening, this tape is prone to tearing and contaminating sensitive areas. Tapered threads are also prone to being over-torqued. These drawbacks usually lead to the prohibition of conical threads being used in hydraulic and pneumatic systems.
What are the Other Hydraulic Connections?
Given that industrial equipment and machines are designed and manufactured by manufacturers from all over the world, it is not surprising that there are different types of fittings and adapters. These various connectors employ a number of different sealing methods and thread forms. Although many of them may look the same or at least be very similar, accurately identifying their types is not difficult. Besides the three mentioned above, there are also the following options to choose from.
- 37 degree flare
- 30 degree flare (metric)
- 45 degree flare
- 24 degree flareless (SAE)
- 24 degree flareless (DIN)
- 30 degree flare (BSPP)
- Ушчыльняльнае кольца (ORFS)
- 60 degree NPSM Swivel
- 60 degree Cone (BSPP)
- 60 degree Cone (Metric)
To determine the type of fittings you are working with, follow a simple four-step process. First, you need to figure out whether it is a permanent fittings or a reusable fittings type. Permanent fittings are usually connected by crimping. Compared to reusable fittings, permanent fittings are easier and faster to attach, making them ideal for applications in the fluid power industry. Next, before attempt to install a hose or tube assembly, you need to identify the port connections, which are those listed above. Then, you need to identify the particular sealing method, which is usually automatic angle sealing, tapered threads, or O-ring sealing. After determining the sealing method, you need to use a seat gauge to determine theseat angle. Finally, you need to measure the threads, which requires the use of a caliper. By measuring the number of threads per inch on the outer and inner diameters, you can accurately read the thread size. Once you know exactly which fittings you are using, you can easily contact the supplier and order the specific type of fittings.
Consider Other Hydraulic Hose Fittings Feature
Other important feature of hydraulic hose fittings include how they are attach to the hose, their shape, and the materials from which they are made.
Permanent crimping type and field-reusable type
Hydraulic fittings can be attach to hydraulic hoses in two main ways: абціскныя фітынгі і field attachable fittings.
The Field attachable or reusable fittings come with sockets and nipples, and can be easily installed anywhere without the need for a crimping equipment.
The crimped fittings are permanently sealed using a crimping machine. Permanent hydraulic fittings are more widely used than reusable fittings. They are renowned for their safety and reliability and are widely applied in the fluid power industry.
Permanent fittings require the use of a crimping machine. There are many types of crimping machines available, ranging from large workshop machines to more portable handheld devices. Portable crimper have become very popular and are suitable for on-site use.
Shape
The shape of the hydraulic hose fittings enables the hose and components to be connected, change direction, and split or combine fluid. Here are some common shapes of industrial hydraulic hose fittings:
Straight fittings: This is the simplest type of hose fittings. It has a straight-through design and is used for connecting two hoses in a straight line or for connecting a hose to a component.
Elbow fittings: These fittings have a bent or angled design and are used when the fluid direction needs to be changed in the hydraulic system. Elbow fittings come in various angles, such as 45 degrees and 90 degrees, providing greater flexibility for system design and installation.
Tee Fittings:The Tee fittings is in the shape of a T and is used for split or combine the hydraulic oil flow. They can connect three hoses or components, thus achieving the branching or merging of the hydraulic line.
Cross fittings: The cross fittings is similar to the tee fitting and has a cross-shaped design. It can connect four hoses or components, thus enabling more complex hydraulic system configurations.
Flange fittings: These fitting are used to connect hoses or components to the flange surface. They provide a secure and leak-free connection, making them suitable for high-pressure applications.
Why are there so many different types of hydraulic fittings?
Although there are many types of hydraulic fittings and connectors, they can ultimately be classified into three basic types: metal seals, soft seals, and tapered thread connectors.
Regardless of which type your fittings belongs to, it must meet two conditions: it must seal and it must hold. In some cases, the same mechanism can achieve both functions; while in other cases, two different part of the same mechanism are responsible for these two functions respectively. The taper of the tapered pipe connector is cut on a taper with a pipe's diameter, and it gradually changes along the entire threaded part of the pipe to make the connection more secure. Such fittings require the use of sealants to ensure that there is no leakage around the fittings, and usually, chemical sealants or sealing tapes are used. Although correctly installing tapered pipe threads can be somewhat difficult, it is crucial because poor sealing can lead to leakage when pressure is applied. The disadvantage of tapered pipe fittings is that they must be fixed to the pipe through welding or brazing during connection.
The invention of metal sealed fittings was mainly to replace tapered pipe thread fittings. This type of fittings uses a tapered thread combined with machined end faces, which can withstand the high pressure commonly found in hydraulic systems. The thread is responsible for maintaining the connection force, while the machined end face is responsible for sealing. Compared to tapered fittings, metal sealed fittings are easier to position and usually do not require any additional sealants to provide better sealing performance. However, they still need to be welded or brazed to the pipe.
Soft seal fittings are probably the most commonly used type. They use elastic body seals and can prevent leakage even under high-pressure conditions. One of the major advantages of using soft seal fittings is that the installation speed is very fast, which is particularly important in industrial applications. Moreover, they can withstand many vibrations that systems encounter, so the failure rate is much lower than that of tapered fittings.
Choose the Right Hydraulic Hose Fitting for Your Application
Industrial hydraulic hose fittings are an essential part of various hydraulic systems. Understanding the different types of fittings, their materials, and typical applications is crucial for choosing the right fittings that meet your specific needs. Choosing the right fittings ensures the safe and efficient operation of the hydraulic system, minimizes downtime, and enhances production efficiency.
When choosing the appropriate hydraulic hose fitting, the most important considerations include size, material, temperature range and pressure requirements. You should also take into account the specific application and the function of the fitting. Finally, if the fittings needs to be frequently connected and disconnected, fittings you choose that is easy to assemble and disassemble should be selected.
Sinopulse Hydraulic hose fitting products and services
Sinopulse offers high-quality hydraulic hose fitting products and first-class services. We have an inventory of industrial hydraulic hoses, fittings and couplings worth over one million US dollars, and 200 CNC production machines for fittings, with an annual production capacity of over ten million hydraulic fittings, ensuring that everything you need is always available.
Our factory can complete any custom hose assembly according to your specific requirements. We can assist you in designing and build a safe and efficient hydraulic system to meet your needs.
If you want to know more about hydraulic hose fittings, hose factory services, and crimping equipment, please звяжыцеся з намі. You can also directly shop hydraulic hose fittings and products at https://www.sinopulse.cn/!