High-Pressure Hydraulic Rubber Hose DIN EN856 4SP - China Suppliers & 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 | Min | Max | bar | psi | bar | psi | mm | kg/m |
| mm | mm | mm | mm | mm | mm | mm | |||||||
| 10.0 | 3/8 | 9.3 | 10.1 | 16.9 | 18.1 | 20.6 | 22.2 | 445 | 6454 | 1780 | 25816 | 180 | 0.78 |
| 12.0 | 1/2 | 12.3 | 13.5 | 19.4 | 21.0 | 23.8 | 25.4 | 415 | 6019 | 1660 | 24076 | 230 | 0.89 |
| 16.0 | 5/8 | 15.5 | 16.7 | 23.0 | 24.6 | 27.4 | 29.0 | 350 | 5076 | 1400 | 20305 | 250 | 1.11 |
| 19.0 | 3/4 | 18.6 | 19.8 | 27.4 | 29.0 | 31.4 | 33.0 | 350 | 5076 | 1400 | 20305 | 300 | 1.59 |
| 25.0 | 1” | 25.0 | 26.4 | 34.5 | 36.1 | 38.5 | 40.9 | 280 | 4061 | 1120 | 16244 | 340 | 2.02 |
| 31.0 | 11/4 | 31.4 | 33.0 | 45.0 | 47.0 | 49.2 | 52.4 | 210 | 3045 | 840 | 12183 | 460 | 3.32 |
| 38.0 | 1 1/2 | 37.7 | 39.3 | 51.4 | 53.4 | 55.6 | 58.8 | 185 | 2683 | 740 | 10732 | 560 | 3.70 |
| 51.0 | 2 | 50.4 | 52.0 | 64.3 | 66.3 | 68.2 | 71.4 | 165 | 2393 | 660 | 9572 | 660 | 5.47 |
Frequently Asked Questions
What do I.D., R.O.D., and O.D. stand for in the specifications?
I.D. stands for Inner Diameter, R.O.D. stands for Reinforcement Outer Diameter, and O.D. stands for Outer Diameter. These dimensions are critical for determining the proper fitting sizes and ensuring the hose fits within the spatial constraints of your equipment.
How is the Maximum Working Pressure (MAX W.P.) calculated?
The Maximum Working Pressure (MAX W.P.) is the maximum pressure at which the hose is designed to operate safely and continuously. In this specification table, it is provided in both metric units (bar) and imperial units (psi) to suit different system measurement standards.
What is the safety factor between Working Pressure and Burst Pressure?
Based on the technical data provided, the Minimum Burst Pressure (MIN B.P.) is consistently four times the Maximum Working Pressure (MAX W.P.). This represents a standard 4:1 safety factor, designed to prevent catastrophic failure under sudden pressure spikes.
Why is the Minimum Bend Radius (MIN B.R.) important during installation?
The Minimum Bend Radius (MIN B.R.) indicates the tightest curve the hose can make without kinking or restricting fluid flow. Bending a hose tighter than the recommended limit (ranging from 180mm to 660mm depending on size) can structural damage the reinforcement layer and significantly reduce hose life.
How does the hose weight affect overall system design?
Hose weight (expressed in kg/m) increases as the diameter of the hose increases, ranging from 0.78 kg/m for the 3/8" hose up to 5.47 kg/m for the 2" hose. Knowing the weight is essential for calculating system load capacities, designing proper hose supports, and selecting appropriate mounting hardware.