DIN EN857 1SC Hydraulic Rubber Hose - China Suppliers & Factory - High-Quality Oil Resistant Hose
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| I.D | R.O.D. | O.D | MAX W.P. | MIN B.P. | MIN B.R | WEIGHT | ||||||
| metric mm |
inch | Min | Max | Min | Max | Max | bar | psi | bar | psi | mm | kg/m |
| mm | mm | mm | mm | mm | ||||||||
| 6.3 | 1/4" | 6.1 | 6.9 | 9.6 | 10.8 | 13.5 | 225 | 3260 | 900 | 13050 | 75 | 0.18 |
| 8.0 | 5/16" | 7.7 | 8.5 | 10.9 | 12.1 | 14.5 | 215 | 3120 | 860 | 12470 | 85 | 0.21 |
| 9.5 | 3/8" | 9.3 | 10.1 | 12.7 | 14.5 | 16.9 | 180 | 2610 | 720 | 10440 | 90 | 0.26 |
| 12.7 | 1/2" | 12.3 | 13.5 | 15.9 | 18.1 | 20.4 | 160 | 2320 | 640 | 9280 | 130 | 0.34 |
| 16.0 | 5/8" | 15.5 | 16.7 | 19.8 | 21.0 | 23.0 | 130 | 1885 | 520 | 7540 | 150 | 0.44 |
| 19.0 | 3/4" | 18.6 | 19.8 | 23.2 | 24.4 | 26.7 | 105 | 1520 | 420 | 6090 | 180 | 0.54 |
| 25.4 | 1" | 25.0 | 26.4 | 30.7 | 31.9 | 34.9 | 88 | 1280 | 355 | 5100 | 230 | 0.77 |
Frequently Asked Questions (FAQ)
What do the abbreviations I.D., R.O.D., and O.D. stand for?
I.D. stands for Inner Diameter, which is the measurement of the internal space of the hose. R.O.D. stands for Reinforcement Outer Diameter, indicating the diameter over the reinforced layer. O.D. stands for Outer Diameter, which represents the total external diameter of the hose.
How does the working pressure (MAX W.P.) change as the hose diameter increases?
As the inner diameter (I.D.) of the hose increases, the Maximum Working Pressure (MAX W.P.) decreases. For example, a 1/4" hose can handle up to 225 bar (3260 psi), whereas a larger 1" hose is rated for a maximum of 88 bar (1280 psi).
What is the safety margin between the working pressure and burst pressure?
The specifications show a safety factor of 4:1. The Minimum Burst Pressure (MIN B.P.) is exactly four times the Maximum Working Pressure (MAX W.P.). For instance, the 1/2" hose has a working pressure of 160 bar and a burst pressure of 640 bar.
What is the importance of the Minimum Bend Radius (MIN B.R.)?
The Minimum Bend Radius (MIN B.R.) is the smallest radius to which the hose can be bent without risk of kinking, damaging the structure, or restricting flow. Bending the hose beyond this limit (e.g., less than 75 mm for a 1/4" hose) can lead to premature failure.
Why does the weight of the hose increase with size?
Larger hoses require more material (rubber, reinforcement layers, etc.) to maintain structural integrity and withstand pressure. As a result, the weight increases from 0.18 kg/m for a 1/4" hose to 0.77 kg/m for a 1" hose.