Selden Hydraulic Hose Assembly — Instructions
How to swage Selden hydraulic hoses – ferrules, hose types before and after 2019, swaged diameters – and how Selden measures hose length.
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Swaging Hydraulic Hoses
- Cut the hose to length, straight.
- Push the hose into the ferrule by hand until it reaches the bottom.
- Push the nipple of the hose fitting into the hose (by hand or with an assembly unit) until its flange stops against the ferrule – the fitting pushes the hose a few millimetres out of the ferrule. Check the fitting sits correctly in the ferrule; grease may be used if the fit is tight.
- Crimp the ferrule in a hose press to the diameter below and check it with a caliper.
| Hose | Size | Ferrule | Diameter after swage (mm) | |
|---|---|---|---|---|
| 540-880 | 1/4" | 540-919 | 15.0 +0/-0.2 | Ask us to source it → |
| 540-870 | 3/8" | 540-920 | 18.9 +0/-0.2 | Ask us to source it → |
| 540-981 | 1/2" | 540-985 | 22.0 +0/-0.2 | Ask us to source it → |
| 540-965 | 1/4" | 540-919 | 15.0 +0/-0.2 | Ask us to source it → |
Note the two different 1/4" hoses. Check very thoroughly that no impurities get into the system. Selden publishes this as a recommendation only – always check the settings and swage diameters for the machine you use.
Ferrules & Hose Types
| Ferrule | Size | Diameter before swage (mm) | Description | |
|---|---|---|---|---|
| 540-919 | 1/4" | 18 | PH Industrie ferrule PF-R7-DN 06 | Ask us to source it → |
| 540-920 | 3/8" | 22 | PH Industrie ferrule PF-R7-DN 10 | Ask us to source it → |
| 540-985 | 1/2" | 25 | PH Industrie ferrule PF-R7-DN 12 | Ask us to source it → |
| Hose | Size | Diameter (mm) | Type | From 2019 (marked OL7 / OL8 marine) | Before 2019 (marked OL7 / OL8) | |
|---|---|---|---|---|---|---|
| 540-880 | 1/4" | 11.8 | SAE 100R7 | ZEC OL7 Marine Series, OL737000 | ZEC OL7 Series, OL730000 | Ask us to source it → |
| 540-870 | 3/8" | 16.0 | SAE 100R7 | ZEC OL7 Marine Series, OL757000 | ZEC OL7 Series, OL750000 | Ask us to source it → |
| 540-981 | 1/2" | 20.3 | SAE 100R7 | ZEC OL7 Marine Series, OL767000 | ZEC OL7 Series, OL760100 | Ask us to source it → |
| 540-965 | 1/4" | 11.8 | SAE 100R8 | ZEC OL8 Marine Series, OL837000 | ZEC OL8 Series, OL830000 | Ask us to source it → |
Old and new hoses have the same diameter after swaging.
Maker's data for the hoses Selden uses (from the appendix)
| Hose code | ID (inch / mm) | OD (mm) | Working pressure (bar, 1:4 safety) | Min bend radius (mm) | Weight (g/m) |
|---|---|---|---|---|---|
| OL737000 (OL7 Marine) | 1/4" / 6.4 | 11.8 | 200 | 35 | 90 |
| OL757000 (OL7 Marine) | 3/8" / 9.7 | 16.0 | 175 | 55 | 155 |
| OL767000 (OL7 Marine) | 1/2" / 13.0 | 20.3 | 140 | 75 | 219 |
| OL837000 (OL8 Marine) | 1/4" / 6.4 | 11.8 | 350 | 50 | 97 |
OL7 Marine: SAE J517-100R7 / ISO 3949, −54°C to +100°C. OL8 Marine: SAE 100R8 / ISO 3949, −40°C to +100°C. Both: max +70°C for air, water and water-based fluids; vacuum rating 0.93 bar.
Definition of Hose Length
Couplings are pressed onto the hose and cannot be removed. Couplings B, C and D have swivel nuts: measure from the centre of the cone. Coupling types: A = male 0°, B = nut 0°, C = nut 45°, D = nut 90°, E = banjo. The drawing in the second PDF shows where each length is measured.
Need a part that isn't listed? Ask us to source it and quote the part number from the PDF.
Products in this Manual
