Hydraulic hoses
1SN, 2SN, 2SC, 4SP, 4SH, R15 and R6 hydraulic hoses, supplied by the meter or as crimped hose assemblies with fittings and a traceability tag.
The hydraulic hose is the hardest-working and most frequently replaced part of a machine: a wrongly selected hose either bursts early or stops the machine for hours. We build hose assemblies in our workshop or on site with our service vehicle, which carries a hose crimping machine, and we fit a traceability tag to every assembly we crimp, so the same hose can be made again from the record without taking measurements. We ship hydraulic hoses and fittings from stock anywhere in Türkiye and abroad, and also sell them through our online store hidroticaret.com (Turkish).
Types
1SN
EN 853 / SAE 100 R1AT: one steel wire braid. General hydraulic lines at medium pressure.
2SN
EN 853 / SAE 100 R2AT: two steel wire braids. General high pressure hydraulics; the most common type.
2SC
EN 857: two wire braids, compact construction. Carries the same pressure with a smaller outside diameter and bend radius; for tight installations.
4SP
EN 856: four steel wire spirals. High pressure and impulse duty; press and construction machinery lines.
4SH
EN 856: four wire spirals, large bore sizes. Very high pressure main lines and heavy construction machinery.
R15
SAE 100 R15: four or six steel wire spirals; 420 bar working pressure in all sizes. The highest pressure lines on heavy construction machinery.
R6
SAE 100 R6: one textile braid. Low pressure: return, drain and suction lines.
Crimped hose assemblies
Ready-to-install hoses with fittings crimped to your dimensions. Every assembly carries a traceability tag; hose type, bore, length and fittings are kept on record.
Product images: hidroticaret.com.
How to select
A hose order needs three pieces of information: inside diameter, reinforcement class and length. The inside diameter is given in inches and can be read from the layline printed on the hose; it determines the flow the hose can carry. If the bore is too small, the oil speeds up, heats up and the pressure drop rises; in a suction line this means cavitation at the pump. Commonly accepted velocities are about 1 m/s in suction lines and 3-6 m/s in pressure lines.
The reinforcement class sets the pressure rating. Selection takes into account not only the steady working pressure but also the pressure spike created when a valve closes: impulse and high-cycle lines need spiral reinforced hose (4SP, 4SH) instead of braided hose. The table below shows the maximum working pressure the standards give for each inside diameter.
As the number of reinforcement layers increases, the hose becomes stiffer and the bend radius grows; a 4SH hose cannot be bent as tightly as a 2SN. A large share of hoses that fail in the field die not from pressure but from sharp bends, twisting along their own axis and abrasion. Hose length changes under pressure (according to EN 853 it can shorten by up to 4%), so length is measured from fitting center to fitting center and an allowance is left.
Hose and fitting are selected as parts of a single system: the fitting must match the hose type and inside diameter, and the crimp diameter must be taken from the hose manufacturer's chart. A 1SN fitting crimped onto a 2SN hose will not hold; mixing hose and fittings from different systems is the most common reason a crimp fails.
Hydraulic hose types
| Type | Standard | Reinforcement | Typical use |
|---|---|---|---|
| 1SN | EN 853 / SAE 100 R1AT | One steel wire braid | General hydraulic lines at medium pressure |
| 2SN | EN 853 / SAE 100 R2AT | Two steel wire braids | General high pressure hydraulics |
| 2SC | EN 857 | Two wire braids, compact | Tight spaces, small bend radius |
| 4SP | EN 856 | Four steel wire spirals | High pressure and impulse duty |
| 4SH | EN 856 | Four wire spirals, large bore | Very high pressure main lines |
| R15 | SAE 100 R15 | Four or six steel wire spirals | 420 bar in all sizes; heavy construction machinery |
| R6 | SAE 100 R6 | One textile braid | Return, drain and suction lines |
Maximum working pressure by inside diameter (bar)
| Inside diameter | DN | 1SN | 2SN | 2SC | 4SP | 4SH |
|---|---|---|---|---|---|---|
| 1/4" | DN6 | 225 | 400 | 400 | 450 | - |
| 3/8" | DN10 | 180 | 330 | 330 | 445 | - |
| 1/2" | DN12 | 160 | 275 | 275 | 415 | - |
| 5/8" | DN16 | 130 | 250 | 250 | 350 | - |
| 3/4" | DN19 | 105 | 215 | 215 | 350 | 420 |
| 1" | DN25 | 88 | 165 | 165 | 280 | 380 |
| 1 1/4" | DN31 | 63 | 125 | - | 210 | 325 |
| 1 1/2" | DN38 | 50 | 90 | - | 185 | 290 |
| 2" | DN51 | 40 | 80 | - | 165 | 250 |
Values are the maximum working pressures defined in EN 853, EN 856 and EN 857; "-" means that size is not defined in that standard. Manufacturers may rate their hoses above the standard; the value to rely on is the one printed on the hose. For these hoses the burst pressure is four times the working pressure.
Frequently asked questions
What is the difference between 1SN and 2SN hydraulic hose?
1SN has one steel wire braid, 2SN has two. At the same inside diameter 2SN carries roughly twice the pressure; in 1/2" size, for example, 1SN is rated 160 bar and 2SN 275 bar.
What is the difference between 2SN and 2SC hose?
Both have two wire braids and carry the same pressure; 2SC has a smaller outside diameter and bend radius. 2SC is preferred in tight installations.
Where can I read the inside diameter of a hydraulic hose?
From the layline printed on the hose: it is given in inches (1/2") or as DN (DN12). If the marking has worn off, a photo of the old hose or its fitting is enough for us.
How is hydraulic hose length measured?
From the center of one fitting to the center of the other. Because a hose shortens under pressure, it is measured with a little slack, not pulled tight.
Can a 4SH hose replace a 2SN hose anywhere?
In terms of pressure, yes, but 4SH is much stiffer and has a large bend radius. Fitting 4SH on a routing designed for 2SN bends the hose too tightly and shortens its life.
When should a hydraulic hose be replaced?
Without delay if you see cracks in the outer cover, exposed or opened braid, weeping at the base of the fitting or blistering. On critical lines hoses are replaced at set intervals, without waiting for a failure.
Is hose crimping done the same day?
Hose assemblies in standard sizes are usually ready the same day. For urgent jobs we crimp on site with our service vehicle, which carries a crimping machine.
What is a hose traceability tag for?
The tag fitted to every assembly we crimp records the hose type, bore, length, the fittings at both ends and the delivery date. When a hose bursts, just send us the code on the tag and we make the same assembly from the record.
Stock, sizes and part numbers
Sizes in stock, manufacturer part numbers and brands are kept up to date in our catalog. Send us your requirement on WhatsApp or by e-mail and we will quote and ship worldwide.