Description
Fittings for Multi-Spiral Hydraulic Hose Assemblies
High-pressure spiral hose assemblies require a fitting, ferrule and crimp program approved for the exact hose family. A braided-hose fitting with the same nominal ID is not automatically suitable. Our fitting catalogue separates 1T, 4S and 6S end series and lists DIN 24-degree DKO Light and Heavy connection forms; the selected part must match the hose construction and the mating machine port.
Catalogue examples and selection checks
| Catalogue series | Connection example | Critical checks |
|---|---|---|
| 4S, DKO Light | 4S20DL12 female swivel | DIN 24-degree Light seat, metric thread, tube OD, hose DN and orientation |
| 4S, DKO Heavy | 4S20EK12 male rigid or 4S16DS12 female swivel | Heavy-series seat, hose dash size, matching port and crimp system |
| 6S, DKO Heavy | 6S25DS16 female swivel | Confirm the designated hose family, thread, ferrule, die and crimp target |
These are catalogue part-number examples, not a universal interchange or working-pressure claim. The catalogue dimension table identifies a fitting shape; pressure and impulse suitability must be confirmed for the complete hose, end fitting and ferrule assembly.
Field problem: fitting leak or pull-off after replacement
| Observation | Possible mismatch | Action |
|---|---|---|
| Leak at the port | DKO Light/Heavy seat or thread identified incorrectly | Isolate pressure and check both mating ends before remaking the connection. |
| Leak at crimp or end movement | Wrong hose/ferrule family, insertion depth or crimp diameter | Remove the assembly from service and rebuild using approved component and die data. |
| Early failure near the elbow | Twist, short routing, vibration or bend below the hose limit | Correct routing and orientation before setting the new assembly length. |
For heavy equipment in Indonesia, send the old hose marking, DN/dash size, working and peak pressure, photos of both ends, thread/seat measurements, required length, quantity and machine model. Our Surabaya team can review the configuration before a quotation.
Compare EN 856 4SP/4SH hose, DKO Heavy fittings and the mining hydraulic hose solution.
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