5 Things to Know Before Buying DIN One Piece Hose Fittings OEM

OEMs and fitting manufacturers are constantly finding new ways to stump us with different threads and new ways to seal them. Generally, however, when making hydraulic fitting connection choices today, there are several features to research and understand for your application. We highlight connections, attachment styles and the 5 most important factors you need to consider for hydraulic fittings.

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7 common end connection types

• JIC 37' Flares: The Joint Industrial Conference (JIC) fitting is the most common hydraulic connection style. It consists of parallel threads and a 37' cone on the fitting end that attaches to either a flared tube or hose fitting.
• O-Ring Face Seals: O-ring face seal fittings have flat sealing surfaces that contain an embedded seal, which mates to flanged tubing or hose fittings. Flat sealing surfaces reduce the risk of over-torqueing, and the captured seal prevents leakage.
• O-Ring Boss: The threads of the SAE straight thread O-Ring Boss (ORB) and the straight thread 37' JIC Flare are the same threads. The difference is the way each thread seals. While the JIC seals on a metal-to-metal flare, the ORB seals on an O-ring, which offers the best leak free connection.
• Inch Compression: The inch compression fitting is a bite type fitting for hydraulic tubing and there are very limited hose connections for this style. This fitting can be assembled onto hydraulic hard tubing in the field with minimal tooling required.
• NPT Pipe Threads: NPT pipe threads are your traditional tapered thread fittings and have been used for 100 years. They are available in low-pressure black iron and brass, and high-pressure steel and stainless steel. This connection style is used in pneumatic and process systems and hydraulic systems.
• DIN Metric 24' Bite Type: This is the most common hydraulic fitting style in Europe. As such, there is a full line of hose fittings for this style, and it can be used with metric-sized tubing. Newer versions of this fitting style incorporate a captured elastomeric seal on the mating surface, providing better sealing and reusability.
• Four-Bolt Flange: The 4-bolt flange connections conforming to SAE J518 and ISO -1 and -2 are proven, leak-free connections and are especially suited for larger sizes, higher pressures and assembly in tight quarters.

2 differences among attachment styles

• Crimp Fitting: Using crimp fittings requires a crimping machine or a press to attach the fitting to the hose. If you don't have a machine of this type in your shop or facility, a local Hydraulic distributor or supplier can fabricate the hose assembly. Locate a distributor near you.
• Field Attachable Fitting: The advantage of field attachable fittings (also referred to as reusable fittings) is that a machine isn't required to attach the fitting to the hose. The hose assembly can be made anywhere provided that the fitting and the hose on hand is Field Attachable Fitting compatible. In most cases, a field attachable fitting consists of two pieces; a socket and a nipple.

 

5 factors for fitting selection

Below are the five factors you should consider when selecting the right hydraulic fitting for your application:

1. Versatility: JIC fittings offer the best versatility of any of the aforementioned fitting systems. Additionally, there are available fittings that can connect JIC fittings to any foreign or American port, and jump sizes can expand or reduce between any sizes. A key benefit of JIC is the great variety of product that is typically stocked by vendors, including straights, elbows, long drops and male or female threads.
2.  Availability: JIC and NPT fittings have been the field standard for decades, and they are readily available in both volume and variety. As a growing number of OEMs converts to O-ring face seals and DIN metric fitting styles, any hydraulic hose shop should be able to identify these new fittings, but the selection may be limited. Click here to find your local Parker distributor.
3. Pressure Rating: Many OEMs are choosing O-ring face seals and DIN metric fittings, as required pressure ratings have increased. JIC fittings are not rated for these pressure ratings, especially in high vibration applications. Similarly, NPT threads are not recommended for higher pressure. These applications require specially-rated fittings.
4. Application: The application in which a fitting will be used is a critical factor in choosing the right fitting. The STAMP acronym applies to fittings as well as it does to hose. Size, Temperature, Application, Media and Pressure all must be taken into consideration when making this choice. The STAMP process is integrated in Parker's HoseFinder app.
5. Reliability: NPT pipe threads have always been popular, as leaks can be fixed by simply tightening the fitting. This practice, however, has led to cracked fittings. While JIC has been the industry standard for years, it still susceptible to cracked flares from overaggressive wrenching. The mated sealing surfaces in O-ring face seal fittings and DIN metric fittings reduce the risk of over torqueing, and provide greater reliability due to the elastomeric seal that is captured in the mating surface.

At the end of the day, all hydraulic fittings are only as good as the assembler who installed them. A general rule of thumb is to connect a hose with the least amount of connections possible. There are proper assembly procedures for each of the fitting styles, and strict adherence to those steps makes the difference between a solid connection and a problem waiting to happen.

 

(source: http://blog.parker.com)

Hydraulic fittings connect the wires in the hydraulic system, such as hoses and pipes. Most fittings have a male and female component connected to form a connection. These connections help control and guide the flow of hydraulic fluid in the conductor while preventing leakage and maintaining pressure.

There are mainly five well-known hydraulic fitting suppliers in the world. They are Bosch Rexroth, Daikin Industries, Eaton, Kawasaki Heavy Industries, Parker Hannifin. We are familiar with these five major hydraulic fittings supplier brands, as well as some Hydraulic accessories companies we do not know, how we choose to follow them and buy their products. Please be patient and read the suggestions.

How to find a good supplier of hose fitting?

Hydraulic hose fittings and adapters are widely used in hydraulic systems to connect hoses to other hydraulic components such as valves, actuators, and cylinders to allow fluid conveyance. Although hose fittings and adaptors seem to be very tiny parts of the hydraulic systems, they perform very critical roles in providing strong and secure connections by maintaining safe pressure and preventing potential leakage. 

Unfortunately, hydraulic fittings and adapters of wrong choice will cause slow down, or 'strikes' of working hydraulic systems, or even worse, accidents and casualties. To avoid all these hassle and hazard, it is essential to find suppliers who are capable of supplying hydraulic fittings and adapters that are strong, reliable, and versatile enough to perform safely and effectively in respective applications. 

And here are some tips about how to do so:

China is the biggest exporter of steel fittings and adapters around the world. No matter you are buying from local, or foreign countries such as Korea, Italy, Turkey, etc, it would make sense to start sourcing from China. They will make great substitutes. 

 If you already started buying from China, here are some keys to ask before finalizing your supplier's list. 

Material

Carbon steel: #45, #35, #20, 08F. Price could vary greatly with different materials been used, with most expensive #20 #35 and least expensive 08F. Sometimes you getting cheaper ones is only because your supplier is using cheap steel. It is not always a bad case as you could happen to just need cheap steel. Let's say your hydraulic system is not very demanding in pressure, it is economic to use 08F rather than #20 #35. Nevertheless, if your hydraulic application is critical in pressure, it is rational to buy #20 #35 #45 to avoid any potential explosion. 

Surface Treatment (Electroplate)

The most common plate is zinc plating, also known as Cr3+ plating. However, the price could again differentiate with same plating. Therefore, it is smart to ask about corrosion resistance time, also known as salt spray test hour. Usually, the industry standard is 96 hours, but prices make differences. It could be as low as 72 hours, or as long as 560 hours or above, depends on your specific needs. On the other hand, there is other kinds of plating such as Nickle zinc plating, which is more expensive and of course for more demanding applications. 

Standards

The most popular standards of hose fittings and adapters are SAE and Eaton. They differ in hexagons as people in different countries use different wrenches. Overall SAE and Eaton standards are interchangeable, but countries do have their own preferences. Therefore, it would be wise to make sure which standards you use and inquire accordingly.  

Forge Plant

It is important for your supplier to have his/her own forge plant to lower home costs, maintain consistent product quality, and fasten lead time. 

Keep these in mind and you will probably find a great supplier.  

Benefits of choosing Chinese hydraulic hoses

There are many manufacturers and suppliers of large and medium hydraulic hose fittings worldwide. China is currently the world's largest exporter of hoses. What are the benefits of choosing Chinese hydraulic hoses?

Low price

• The price of hydraulic hoses in China is very attractive. Distributors go to China to buy hoses and fittings at a lower cost and sell locally to earn high profits. Choosing a Chinese manufacturer can bring him a much richer profit than hydraulic parts suppliers in other countries.

The complete supply chain system

• China is known as the world's processing factory. In China, you can find more than 95% of the hose models you have. And efficient production capacity and fast logistics system allow you to receive products in the shortest time. It does not affect your sales and guarantees adequate supply.

Customized services

• Generally, China's hydraulic hoses and accessories products will provide customized services. They can make the hoses and accessories you need according to your needs. Flexible and customized services will surely satisfy you.

 

How to find a manufacturer of hydraulic hoses and accessories in China

The three most mainstream ways to find lift manufacturers in China

B2B platform

• The corresponding manufacturers can be found on various b2b platforms. China's well-known b2b platforms are Alibaba and made in china

Google search engine

For more information, please visit DIN One Piece Hose Fittings OEM.

• The website information of Chinese manufacturers of hydraulic hoses and accessories is included in Google's database. You can search for them with different keywords.

Foreign trade exhibition

• Through foreign trade exhibitions, you can get the contact information of most Chinese manufacturers of hydraulic hoses and accessories, and exchange and negotiate on the spot.

How to choose a manufacturer of hydraulic hoses and accessories in China

• Hydraulic Fittings Price

  When it comes to price, you may often hear suppliers asking how much you want to buy. As you can see, the reason is that mass production is more efficient and less expensive for the factory.

  If a production line needs to switch orders back and forth, efficiency suffers. If you are buying in bulk, you can ask your Chinese supplier for more price support.

• Quality of hydraulic fittings

  One thing you should know is that components used by different suppliers can vary widely, even if they are the same hydraulic fitting.

• Delivery of hydraulic Fittings

  Third, timely delivery will minimize your out-of-stocks. Especially if you are doing some marketing activities, we should prevent late delivery.

  In addition to the above three aspects that need attention, there are some places that need special attention.

• Cstomized product

  Different markets have different functional requirements and specification requirements. Therefore, customization for a variety of different needs is very important.

  In addition, the technology of hydraulic joint products is also more mature.

  You can specify the features you want in a product and then check with the vendor to see if the product meets your needs.

• Hydraulic accessories supplier qualification

  Hydraulic fittings are a production machine with very high barriers to entry. For European countries, CE certificate is mandatory. For the US market, both exporters and importers are required to register with the FDA if they sell as "hydraulic accessories".

  Having said that, you should verify their eligibility.

• After-sales service

  Besides product, price and delivery time, the service of the supplier is also important. Whether it's answering your questions in a timely manner or helping you with after-sales issues, these can impact your business operations.

  You can observe the supplier's performance during the communication process to see if they have these experiences and the ability to provide good service.

China's outstanding manufacturer of hydraulic hoses

Lake Hydraulics was founded in and is dedicated to the development and manufacture of hose fittings, hydraulic adapters, hose assemblies and other related products that are widely used in mining, machinery, transportation, shipping, and oil fields.

Our ability

Company

Lake Hydraulics

Established

Size of the factory 

18,000 square meters

Number of personnel

> 100 people

Certificates

ISO''RoHS

Our client

With reliable quality, decent price, and superior service, we have successfully established our reputation and won over customers from worldwide. Some of our big clients are Parker, Eaton, Terex, PrincessAuto, etc. Our cooperation includes OEM/ODM service, customization, and so on. We will strive to keep up our work, upgrade and improve, innovate and invent, and thus strengthen the partnerships with our clients.

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If you need to purchase hydraulic accessories or hoses, please contact us. Or visit our website.https://www.laikehydraulics.com

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