How to Choose the Right Hydraulic Hose
In many cases, cost may be a factor, and bulk parts can be purchased online or from warehouses that claim to be able to use hoses. However, these accessories usually have not undergone formal qualification tests to ensure reliable and safe connections. Therefore, owners and operators are forced to choose between spending more upfront, some costs, and some downtime to get the right fittings that match the hose, or save and install in advance that do not match the existing hoses or components Accessories. Saving money and continuing to work may seem like an obvious choice, but there are benefits to investing in ordinary hoses and fittings up front.
You will get efficient and thoughtful service from HT-HYDRAULICS.
Hydraulic hose is very important to many enterprises and production equipment, because it affects the normal production operation and economic benefits of this enterprise, and even affects the life safety of workers. Therefore, it is very important to choose the right and correct hydraulic hose, and every effort must be made to make the machine run normally.
This article will take you to understand the precautions for choosing the right hydraulic hose.
Choose the right hydraulic hose index
Determination of technical indicators: to understand the needs of the product, and then determine the main indicators of the hydraulic hose according to the needs. For example: working pressure, hydraulic hose inner diameter, hydraulic hose outer diameter, hydraulic hose transport medium, use environment, service life, length dimension, minimum bending radius, etc., list a detailed table to determine the required hydraulic hose Technical indicators. The following explains how to choose from these 8 aspects:
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Working pressure
This depends on the maximum working pressure and whether it can meet the requirements.
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The inner diameter of the hydraulic hose
To ensure that the medium transmitted in the hydraulic hose can be transmitted smoothly without clogging, and it should be selected according to the diameter of the applied product, and it should not be too large or too small;
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The outer diameter of the hydraulic hose
Choose according to the size of the applied product caliber, not too large or too small, to ensure that it can be assembled normally and does not leak;
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Delivery medium
This is very important, we must pay attention to it. Choose the corresponding hydraulic hose when choosing. For example, if the delivery medium is hydraulic oil, choose hydraulic oil resistant when choosing;
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Use environment
Choose the hose according to the use environment, see whether the environment is harsh, whether it is in the open air, the light time, whether it is frequent friction, the external temperature, etc.;
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Service life
According to the requirements of the product, choose the appropriate service life, and consider the difficulty and cost of replacement of the hydraulic hose when the service life is up;
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Length size
According to the size of the product and the specific conditions of use, select the appropriate length size, try to be just right, and not allow it to be excessively bent or kept in a state of vigorous tension all the time;
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Minimum bending radius
Because the hydraulic hose has a minimum bending radius when in use, it is necessary to consider the specific location of the product using the hydraulic hose and determine the appropriate minimum bending radius, so that the normal use environment of the hydraulic hose does not exceed Minimum bending radius.
Precautions for buying hydraulic hoses
No hose assembly will last forever, but choosing the right hose and accessories will help extend the life of the assembly-and keep your equipment and work in normal operation for a longer time.
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Hydraulic hose manufacturer technical support
Under normal circumstances, the manufacturers of hydraulic hoses and hydraulic pipe fittings will provide regular test support and warranty. The hydraulic hose components are assembled in accordance with the manufacturer’s specifications. Under normal circumstances, if there is a problem with the component, the corresponding maintenance or technology will be carried out. support. However, if you choose bulk accessories to match, you may lose the original protection and the manufacturer's corresponding support.
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Specification for the use of hydraulic hoses
The Society of Automotive Engineers (SAE) standard states in section 6.3 of SAEJ, “The hoses of one manufacturer are usually not compatible with the accessories of another manufacturer. Please do not use the hoses from two manufacturers without the approval of two manufacturers. The hoses and fittings are mixed.” Two manufacturers may provide similar hoses and fittings, and they may look close enough. But the SAE guidelines are clear on this topic. The International Standards Organization (ISO) and European Standards (EN) also provide performance standards and guidelines for hose performance.
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Strict hydraulic hose performance test
Performance guidelines are provided for all hose assemblies, and many manufacturers test them during hose manufacturing and assembly. Manufacturers’ tests usually only show their hose products and their accessory products, and hoses and accessory interfaces are one of the most common failure areas in the testing process, so matching is very important.
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Risk of inappropriate hydraulic hoses
To determine whether the cost is worth the risk, you must first understand the extent of the risk. When the hose assembly fails, hydraulic oil will be sprayed everywhere. For example, if the hose assembly on a garbage truck that collects garbage on city streets fails, the owner of the truck will need to hire a company to clean up the spill and may first face a fine for the oil spill. The risks are different, but it is equally important to consider indoors. Environmental fines may not be so important, but the danger to workers is certainly. The hydraulic fluid is very hot and if the hose bursts, it may cause severe burns.
The risk of downtime also exists. A hose failure usually results in equipment downtime until the component can be repaired. When equipment fails, productivity drops or even overtime to complete the work, which brings greater economic pressure. The higher the frequency of hose assembly failures and the higher the frequency of your machine downtime, the greater your bottom line risk. In the series of work to get the machine up and running again, there is also the risk of choosing the fastest or cheapest hose coupling instead of the hose coupling suitable for the application. Although this may be the easiest way to bring the machine back online today, it increases the risk of the hose assembly failing again and brings you back to the starting point.
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Test the right hydraulic hose repeatedly
Finding the perfect hose assembly requires a lot of trial and error. Perfecting the crimp diameter is a difficult task, and the crimp diameter tolerance is six thousandths of an inch. When purchasing hoses and fittings from a manufacturer, the company can recommend the appropriate crimp diameter to establish the best connection. Many Chinese hydraulic hose manufacturers have begun to accelerate their own technology research and development to improve the reliability of the connection, and they have approached the top international companies to strengthen their competitiveness.
Choose the best hydraulic hose manufacturer in China
Why choose a Chinese manufacturer of hydraulic hoses? We have listed 6 reasons.
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Flush the World Top Technology
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High-level Workforce
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Continuously Growing Population and Labor Force
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Always Lower Cost
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Infrastructure and Geography
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Stablize
As a major industrial country, China's hydraulic hoses and accessories are trustworthy. With these advantages, more and more customers choose Chinese hydraulic hose manufacturers.
Click to read in detail why you choose a Chinese hydraulic hose manufacturer.
Where to find a suitable Chinese hydraulic hose manufacturer
Under normal circumstances, the following three ways can be used to find a suitable Chinese hydraulic hose manufacturer
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B2B platform
The corresponding manufacturers can be found on various b2b platforms. China’s famous b2b platform is Alibaba, made in China
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Google search engine
The website information of Chinese manufacturers of hydraulic hoses and accessories is included in the Google database. You can search for them using different keywords.
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Foreign trade show
Through the foreign trade exhibition, you can obtain the contact information of most of the manufacturers of hydraulic hoses and accessories in China, and exchange and negotiate on-site. However, due to the impact of the COVID-19 pandemic, Chinese hydraulic hose manufacturers are not willing to participate in overseas exhibitions.
China top hydraulic hose manufacturer
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.
With reliable quality, reasonable price and excellent service, we have successfully established our reputation and won customers from all over the world. Some of our major customers include Parker, Eaton, Terex, PrincessAuto, etc. Our cooperation includes OEM/ODM services, customization, etc. We will strive to keep up with our work, upgrade and improve, innovate and invent, thereby strengthening the partnership with customers.
If you need to purchase hydraulic hoses, visit our website, you can view our products, and contact us.
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hose and fittings question - Eng-Tips
So, the last time I bought hydraulic hoses from a local supplier (who has since gone out of business), I simply told him I needed a 36" long hose with 3/8" NPT fittings (for a snow plow) ... I don't think he even asked what pressure rating, just assuming it was under psi. He didn't ask me how may wire lays or if I wanted "w" type fittings or much of anything.
Anyway .... I was about to order a flex hose and was a bit confused by my chooses.
I need: 36" long, I am running under psi (max my power unit will put out ... relief set to psi), SAE (ORB) 08 (1/2")fittings
So, the first item I pick is "hydraulax tough" from Discount Hydraulic Hose. 2 wire, psi, 3 1/2" bend radius .... $2.50 a ft ... looks great.
Then I keep reading ... R12 "very high pressure hose" ... 4 wire! but it only is rated at 4,000 psi with a 7" bend radius and costing $5 per ft.
And there are obviously other chooses (R16, R17, ...)
So two questions ....
1) as long as the pressure ratings are OK, is does it matter what hose I choose? I would have thought more wire wrap layers is better but yet the one with 4 layers has a lower pressure rating that the one with 2 layers.
2) some say "braided hose fittings" (standard crimp), some say "series W fittings" (bite to wire) and some give me a choose of either. I tried to find an explanation on the web ... I don't see one. I "assume" (but wanted to check with you guys" that the "bit to wire" fittings were better as I am guessing they penetrate the outer layer of rubber and "dig in" to the outer wire wrap layer.
Just want to make sure I order the correct hose.
Thanks ...... Mike
Actually, I am using the lift as an elevator ... I know, scary thought.
It is for personal use so I don't have to worry about liability and such .... wife may kill me but she will not sue me if it breaks.
Even though the original forklift was designed for lbs of lift, I will have a load of 500 - 700 lbs ( electric wheelchair with a person and maybe an one person riding with them.
I didn't think about the deflection of the mast ( I should have ), I was just thinking they did this because of the "play" in the mast sections.
I am thinking I will load up the car (oh ... car .... now I know why you thought it was for a vehicle) .... sorry, load up the platform ( with solid walls and gate, open top ), with a load ( I was planning on using barrels filled with water ), and see if I can get the unit to lift "straight" up. I want this so I can maintain the clearances between the car and the wall.
With such a small load, I am guessing I will have a minimal defection of the mast. I will find out shortly.
I did order a velocity fuse (hose brake valve). I am (or was ... I will have to see if anything moves when everything is bolted down) planning to hard pipe everything. I was trying to get rid of one more possible failure point ... the hose.
Again, I am overbuilding ( and overthinking ) everything .... I do this on all my projects .... drives people crazy (but this was a good thing and encouraged when I worked in a nuclear plant). There will be no shock load since I have a flow control valve to slowly bring the flow up and down an the beginning and end of the lift. Since the load will be so small, the pressure will only be about 500 PSI. The lift is inside so no UV light, weather or such.
I just keep going over things one by one as I put the system together.
Thanks again ..... Mike
Actually, you would be surprise ....
We started building almost 4 years ago. We had ledge just below the surface. We got a quote for $30k to dynamite the basement out. We got two companies in to give us a quote on an elevator ... two quotes ... $15K, plus we found a grant for $10K so $5K out of pocket. Great, so we decided to raise the house out of the ground. The ground floor is now our basement ( unfinished ), the first floor is now 10 ft up. The price of building a first floor out of the ground was much cheaper that just the $30K to dynamite a basement out. It actually worked out well since we live in VT ( very rural ) ...one side of the house overlooks a small river and the other looks out over a wetlands to the mountains.
Anyway, this year we got both companies in ... both came in close to $40K .... OUCH! Even after a $10K grant, we don't have $30K.
So I bought the forklift for only $850 .... with valves, a spare power unit (for an auto lift ... $500), and a plc to run the flow valve and control the interlocks ... I am thinking $3K to $4K in the project.
I am a machinist by trade and also an electronic controls specialist. So most of this project is straight forward for me. I have interlocks ( so doors are lock when the car is in the wrong location), over travel switches (that kill power, not just tell the plc to shut down), timers to shut off a pump if it runs too long (I saw a contactor weld itself on once and a motor burn up). The main power is two 12 volt deep cycle batteries so it will run even if the power goes out. I have separate batteries for the controls so I don't loose them even if the batteries on the pump go low.
My shop is not built yet (poured the pad last year ... will start it right after I finish this elevator ... wife is getting tired of living in the "basement"). I do have a welder inside the house so I can build the platform.
It is an interesting project ... and I am learning a great deal about hydraulics!
Really, I am sure most of the cost of medical equipment is driven by liability insurance and by insurance. If you look at the cost of anything with the word "medical" on it, it is usually a rip off. If I remember correctly, her last electric wheelchair (it has a tilt function so you can lay back ... to stop pressure soars) lists at $40K !!!!!!!!!!!!! She has insurance thought the state so I am not sure how much they actually paid for it but I am sure it was a lot.
I have learned to build many items myself. My wife need care every 4 hours thus she had never traveled (she broke her neck when she was 12 diving into a pool and is paralyzed from the shoulders down).
Just FYI ... here is a link to an old RV I converted 8 years ago so we could travel ( we ended up living in it for three years ... freezing when temps hit -30)
Again, cost driven project .... $18K for the motor home ... they wanted $25K for a lift!
Thanks .... Mike
We actually looked at one of these.
First problem is most (as the one you listed) only go up 8 ft (about 100 inches). We need to go up over 10 ft. This is where there seems to be a huge price jump.
Then they start with the adders.
You will need a motorized gate at the top and bottom .... big adders.
We actually tried one of these at a neighbors. One major problem was the size of the car. There was a legal limit to the size they can sell (I don't remember exactly their reasoning but something about platform lifts has a small size limit than a true elevator) though I do see on the one you found it says 60" optional and that would just work for her. My wife tired a couple of these from different manufacturers ( we even went to a disabilities expo to talk with manufacturers ). Her wheelchair is very large ... electric, center drive (6 wheels), motor on the back for the reclining seat function, ... to get the gate to close her feet hit the front. If I make my own, I can make the car any size I want. 60" literally just worked .... to make it easy for her not to hit each side I am aiming for just shy of 72" giving her 6" of clearance at each end.
And then there was the speed. I now they list 10 FPM ... not sure if that is realist .... most of the ones we saw were much slower. Not bad if you are going up 3 ft but 10 ft takes forever. I installed one of these last fall for an older neighbor ( found a used one for $ ). It was just to get her in the house ... about 3 ft up. It worked great for them. As you said, ramp folded up in the back to stop you from rolling off ( if you look at the one I built for the RV, I used the same idea ), the stop sensors are micro switches on a spring loaded plate on the bottom. The two biggest problems they had were 1) I still needed to put up a gate at the top so on one walked off the platform (in there case, I just used a chain) 2) the second problem was they had to load her one, run around the house since even with a manual chair they could not fit on the platform with a person, and meet them at the top. Again, my wife tried it and just could not fit on the platform.
The big jump in price the companies told me was 1) because we are going up 10 ft ... so you need a very heavy acme screw 2) automatic doors ... two stop stations both with electric doors that will interlock ... my wife could not pull in and then close a door/gate behind her and would not be able to open one that is behind her when she gets to the top.
I have built the house to give my wife a maximum independence. Even with no use of her hands, two years ago she learned to drive. She now had a van that she can get in and out of herself. For the first time in her life, she has the freedom to go where she wants, when she wants by herself. I want to make sure she can use the elevator completely on her own.
Really, these lifts are great to get up and down a couple of steps and have a small chair.
I do appreciate the advice thought .... it would have been much easier to just buy one if I could have found one that worked for us.
Mike