SAE100 R4 Suction & Discharge Hose - Durable Hydraulic Oil Hose from China Suppliers & Factory
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| I.D | O.D | MAX W.P. | MIN B.P. | MIN B.R. | ||||
| DN | INCH | MM | INCH | BAR | PSI | BAR | PSI | MM |
| 19 | 3/4" | 32.0 | 1.26 | 21 | 305 | 84 | 1218 | 125 |
| 25 | 1" | 37.4 | 1.47 | 17 | 247 | 68 | 986 | 150 |
| 32 | 1 1/4" | 45.0 | 1.77 | 14 | 203 | 56 | 812 | 200 |
| 38 | 1 1/2" | 520 | 205 | 10 | 145 | 40 | 580 | 255 |
| 45 | 1 3/4" | 58.0 | 2.28 | 10 | 145 | 40 | 580 | 270 |
| 51 | 2" | 64.0 | 2.52 | 7 | 102 | 28 | 406 | 300 |
| 64 | 2 1/2" | 77.0 | 3.03 | 4 | 58 | 16 | 232 | 355 |
| 76 | 3" | 90.0 | 3.54 | 4 | 58 | 16 | 232 | 460 |
| 89 | 3 1/2" | 103.0 | 4.06 | 3 | 44 | 12 | 174 | 590 |
| 102 | 4" | 116.0 | 4.57 | 2 | 29 | 8 | 116 | 610 |
Q What do the abbreviations I.D., O.D., W.P., B.P., and B.R. stand for?
In this specification table, I.D. stands for Inner Diameter, O.D. stands for Outer Diameter, MAX W.P. represents the Maximum Working Pressure, MIN B.P. refers to the Minimum Burst Pressure, and MIN B.R. denotes the Minimum Bend Radius.
Q How does the maximum working pressure change as the hose diameter increases?
As the nominal diameter (DN) of the hose increases, the maximum working pressure (MAX W.P.) decreases. For example, a DN 19 (3/4") hose has a working pressure of 21 BAR (305 PSI), whereas a larger DN 102 (4") hose has a working pressure of 2 BAR (29 PSI).
Q What is the safety factor ratio between the Working Pressure and the Burst Pressure?
The specifications maintain a consistent 4:1 safety factor. The Minimum Burst Pressure (MIN B.P.) is designed to be exactly four times the Maximum Working Pressure (MAX W.P.) across all listed hose sizes.
Q What is the minimum bend radius (MIN B.R.) for a 2-inch hose?
According to the technical data, a 2-inch (DN 51) hose has a minimum bend radius (MIN B.R.) of 300 mm. Bending the hose beyond this limit may cause structural damage or collapse.
Q In what units are the pressure and diameter measurements provided?
Hose diameters are measured in millimeters (MM), inches (INCH), and Nominal Diameter (DN). Pressure values are provided in both BAR and PSI (Pounds per Square Inch) to suit different regional standard preferences.