SAE100 R4 Suction & Discharge Hose - China Factory Suppliers for Hydraulic Systems Oil Return Lines
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 |
How does the hose size affect the Maximum Working Pressure (MAX W.P.)?
Based on the specifications, there is an inverse relationship between the hose size and its working pressure. Smaller hoses, such as the 3/4" (DN 19) size, support a higher Maximum Working Pressure of 21 BAR (305 PSI), while larger hoses like the 4" (DN 102) size are rated for a lower pressure of 2 BAR (29 PSI).
What is the safety factor between Maximum Working Pressure and Minimum Burst Pressure?
The specifications indicate a safety factor of 4:1. The Minimum Burst Pressure (MIN B.P.) is consistently four times the Maximum Working Pressure (MAX W.P.). For example, the 1" hose has a working pressure of 17 BAR and a burst pressure of 68 BAR (17 x 4 = 68).
What is the Minimum Bend Radius (MIN B.R.) for a 2" hose?
For a hose with an Inner Diameter (I.D.) of 2" (DN 51), the Minimum Bend Radius (MIN B.R.) is 300 mm. Bending the hose below this limit may cause damage or structural failure.
How do I convert the Inner Diameter (I.D.) from DN to inches?
The table lists standard conversions where DN represents the nominal diameter in millimeters. For example, DN 19 corresponds to 3/4", DN 25 corresponds to 1", DN 51 corresponds to 2", and DN 102 corresponds to 4".
What are the dimensions of a 3" hose according to the table?
A 3" (DN 76) hose has an Outer Diameter (O.D.) of 90.0 mm (3.54 inches), a Maximum Working Pressure of 4 BAR (58 PSI), a Minimum Burst Pressure of 16 BAR (232 PSI), and a Minimum Bend Radius of 460 mm.