Memilih selang hidrolik yang benar is critical for ensuring the longevity and performance of your hydraulic systems. Whether you're working in any applications, choosing the right hose can prevent costly downtime and improve efficiency. When choose a hydraulic hose, use the acronym S.T.A.M.P.(E.D.) as your guide to defining critical and important characteristics of a hose.
To ensure you choose the right selang hidrolik, follow this practical guide. It will help you make an informed and confident selection.
STAMPED: Your Guide to Choosing the Right Hydraulic Hose
Itu PERANGKO singkatan dari Size (Ukuran), Temperature (Suhu), Application (Aplikasi), Media (Media), Pressure (Tekanan), dan Delivery (Pengiriman). Setiap faktor memainkan peran penting dalam memastikan sistem hidrolik Anda berfungsi dengan lancar dan andal. Berikut ini adalah arti setiap huruf dan mengapa hal itu penting:
S - Ukuran
S is going to be the size. The hydraulic hose I.D. must be sized accurately to obtain the proper flow velocity. A flow that’s too slow results in sluggish system performance, and a flow that’s too high causes excessive pressure drops, system damage, and leaks. You know it's sized at 16 of an inch on the inside diameter, so really what you're measuring here is the flow path of the hydraulic fluid. So you know, we say it's measured in 16ths of an inch, and it uses a special dash system. So in this case, the hose we're showing is a half-inch inside diameter, and we call that a dash eight.
Hydraulic hose size, or 'dash size,' is determined by the inner diameter (I.D.) measured in sixteenths (1/16") of an inch. Transportation hose is the exception. For example, the “-8" indicates that the hose is 8/16", or 1/2". If we're looking at a 1-inch inside diameter, we'd call that dash 16. Typically with a hydraulic hose, you're going to go up to a dash 32, so a 2-inch inside diameter. Although we do see some larger hoses out there in the market, we do offer a a 3 inch
Hoses, something like an air brake hose, power steering, or anything with a DOT standard attached to it—those are really measured as it would relate to a tube size. You know, back before a flexible hose was used in a lot of transportation applications, they would use hard tubing, so if you have a Dash 8 transportation hose or a DOT hose that has a half-inch inside diameter, it's not going to be quite half an inch, so you want to make sure you're measuring properly.
T - Suhu
T for temperature. To avoid equipment downtime, do not exceed the suggested temp limits.
temperature—You're not only considering what is flowing through the hose but also what's going to be around the outside of the hose, the ambient temperature. Rubber and any other real hose materials are going to be affected by massive temperature swings. Make sure that the temperature rating of the hose you are considering meets or exceeds the higher of the media or ambient temperature of your application. Also, make sure you consider media type along with media temperature, because different fluids can increase or decrease the effects of temperature on the hose
Check the hose specification for the temperature ratings of both the fluid and the ambient environment. For example, for petroleum-based hydraulic fluids, the hose should have a temperature range of -40°F to +257°F. For water/glycol and water/oil emulsion hydraulic fluids, the maximum working temperature drops to +185°F and for air, the rating drops to +158°F
A - Aplikasi
This can be very broad. What's the application of the hose
Memahami aplikasi spesifik Anda adalah kunci untuk memilih selang hidrolik yang tepat. Tanyakan pada diri Anda pertanyaan-pertanyaan berikut:
What is the application of the hose?
- Jenis Peralatan Mesin
- Aplikasi Penghisapan
- Nonconductive Where
Apakah selang itu akan digunakan?
- Kondisi lingkungan
- Min Bend
- Perutean Radius
Persyaratan?
- Clamps/protection sleeves for the hose
- terpapar abrasi berlebihan?
Need to meet any national, legal, industry, or customer standards
- Thread Types—Does the thread type need to withstand system pressure?
- Konstruksi selang khusus (spiral, jalinan)
Selang mana yang sedang digunakan?
Apakah itu gagal? Mengapa itu gagal?
Any changes since the last hose was installed?
Aplikasi tertentu seringkali membutuhkan selang tertentu.
M - Media (Kompatibilitas Cairan)
M is for media; this is really going to be what's flowing through the hose. Different rubber materials or different polymers, things like that, for the inner tube, are going to be compatible with different things. Typically, with hydraulic hose, the variety of media is going to be relatively low; we're typically looking at some sort of hydraulic fluid or oil that's going to be used to do some sort of work, whether lifting or anything like that. so really very important to be cognizant of the fluid compatibility of the material that you're using.
P - Tekanan
Then we come to pressure. Pressure is probably the first thing that comes to everyone's mind come to hydraulic hoses, no different with industrial hoses either. The pressure rating of a specific hydraulic hose is going to be very important. Select a hose with the published maximum working pressure equal to or greater than the maximum system pressure and any surge pressures or peak transient pressures in the system.
All hydraulic hoses have passed the industry-rated specifications for a 4:1 design factor unless otherwise noted. Burst pressure is really going to be when we expect this hose to fail. Burst pressure ratings for hoses are for manufacturing test purposes only. They are not an indication that the product can be used above the published maximum working pressure.
For example, if you find yourself in a 4 000 5000 psi application, you should be using a 3 000 psi hose, because it's not expected to burst until 12 000. You really want to be sure that the working pressure that is labeled on your hose is going to be at or above the system pressure of your hydraulic system.
You also should be looking at impulse pressure when you look at something like a selang dikepang or a spiral hose, if this is an application. For example, maybe an excavator on a construction site, that boom is operating multiple times in a very short period of time, and it is when you go through that many impulses. You should get a high-pressure hose—a selang spiral that is going to hold up in that environment.
E - Persyaratan akhir
Some of the things to consider, as well as what your end requirements are—typically, you're going to know what you're trying to thread to. If you're building a system, you know what sort of ends are going to be best for your application. A variety of connection methods are available. Things to consider: style, shape, male or female, material, and seal method. There are a number of different, you know applications out there that require different ends.
D - Pengiriman (Laju Aliran)
Finally, when you look at delivery. Delivery is certainly not something we want to forget; it's important to consider. You know more, so from a service perspective. There are a number of things you can do to fit a hydraulic hose into your application, whether it's color coding, branding, or tagging, all things that are options when going to a hydraulic hose factory.
Pemikiran Akhir
Choose hydraulic hose correctly is essential to ensure the efficiency and safety of your hydraulic systems. You are choosing the right host for the application By following the DICAP method—Size, Temperature, Application, Media, Pressure, End, and Delivery—you can confidently select the hose that best meets your application’s needs.
Jangan lupa untuk selalu memeriksa spesifikasi pabrik dan berkonsultasi dengan ahli bila perlu untuk menghindari kesalahan. Selang hidrolik yang dipilih dengan baik dapat mencegah kegagalan sistem, mengurangi biaya perawatan, dan meningkatkan kinerja dalam jangka panjang.