High-Pressure DIN EN856 4SH Hydraulic Rubber Hose - China Suppliers and Factory for Petroleum Fluids
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| I.D | R.O.D. | O.D | MAX W.P. | MIN B.P. | MIN B.R. | WEIGHT | |||||||
| metric | inch | Min | Max | Min | Max | Max | bar | psi | bar | psi | mm | kg/m | kg/m |
| mm | mm | mm | mm | mm | mm | ||||||||
| 19.0 | 3/4" | 18.6 | 19.8 | 27.6 | 29.2 | 31.4 | 33.0 | 420 | 6090 | 1680 | 24360 | 280 | 1.55 |
| 25.0 | 1" | 25.0 | 26.4 | 34.4 | 36.0 | 37.5 | 39.9 | 380 | 5510 | 1520 | 22040 | 340 | 2.00 |
| 31.5 | 1 1/4" | 31.4 | 33.0 | 40.9 | 42.9 | 43.9 | 47.1 | 325 | 4714 | 1300 | 18855 | 460 | 2.46 |
| 38.0 | 1 1/2" | 37.7 | 39.3 | 47.8 | 49.8 | 51.9 | 55.1 | 290 | 4205 | 1160 | 16820 | 560 | 3.36 |
| 51.0 | 2" | 50.4 | 52.0 | 62.2 | 64.2 | 66.5 | 69.7 | 250 | 3650 | 1000 | 15600 | 700 | 4.98 |
Frequently Asked Questions
What do I.D., R.O.D., and O.D. represent in the specifications?
I.D. stands for Inner Diameter, which is the measurement of the internal flow path. R.O.D. stands for Reinforcement Outer Diameter, indicating the diameter over the reinforcement layer. O.D. stands for Outer Diameter, which represents the total external diameter of the hose.
How does MAX W.P. relate to MIN B.P.?
MAX W.P. (Maximum Working Pressure) is the maximum pressure at which the hose should safely operate. MIN B.P. (Minimum Burst Pressure) is the pressure at which the hose is expected to fail structurally. In this chart, the safety factor is 4:1, meaning the burst pressure is four times the working pressure.
What is the significance of the MIN B.R. value?
MIN B.R. (Minimum Bend Radius) is the smallest radius to which the hose can be bent without kinking, damaging the internal reinforcement, or restricting fluid flow. Bending the hose tighter than this specified limit can significantly reduce its service life.
Why are pressure values listed in both bar and psi?
Pressure is listed in both bar (metric system) and psi (Pounds per Square Inch, imperial system) to ensure compatibility with global technical standards and user preferences across different regions.
How does the hose size affect its working pressure limit?
Generally, as the inner diameter (I.D.) of the hose increases, its maximum working pressure decreases. For example, the 3/4" hose supports up to 420 bar (6090 psi), whereas the larger 2" hose supports up to 250 bar (3650 psi).