Hydraulic hose terminology can be confusing for new buyers. The same inquiry may mention ID, dash size, working pressure, ferrule, crimping, JIC, BSP or SAE flange. Understanding these terms helps you avoid wrong orders and unsafe assemblies.
Core Hose Terms
| Term | Meaning | Why it matters |
| ID | Inner diameter | Controls flow and fitting size |
| OD | Outer diameter | Helps check clamps and routing space |
| Dash size | Hose size code in sixteenths of an inch | Example: -08 is commonly 1/2 inch ID |
| Working pressure | Safe continuous pressure rating | Must exceed system pressure |
| Burst pressure | Failure pressure in testing | Not for normal operation |
| Bend radius | Minimum safe bend | Too tight causes wire fatigue and cracking |
| Impulse | Repeated pressure cycling | Important for mobile equipment |
Assembly Terms
| Term | Meaning | Buyer note |
| Fitting | Metal end connection | Thread and sealing type must match equipment |
| Ferrule | Sleeve crimped around hose and fitting stem | Must match hose series |
| Crimp diameter | Final pressed diameter after crimping | Use manufacturer data |
| Cut-off length | Total hose assembly length | Confirm measurement method |
| Fitting angle | Orientation between two bent fittings | Critical for installation without twist |
Thread and Standard Terms
Common connection standards include BSP, NPTF, JIC, DIN Metric, ORFS and SAE flange. These standards are not interchangeable. A 1/2 inch thread description is not enough; buyers should confirm thread form, sealing surface and pressure class.
Practical Inquiry Example
A clear inquiry sounds like this: SAE 100R2AT hose, 1/2 inch ID, 2,750 psi working pressure minimum, length 1,200 mm, one end JIC female 90 degree, one end BSP female straight, hydraulic oil, excavator service. This gives the supplier enough information to check hose, fittings, ferrules and crimping.
Common Confusing Terms
- Pressure rating: always check by hose size.
- High pressure: not a standard; specify bar, MPa or psi.
- Oil hose: may mean hydraulic hose or industrial oil transfer hose.
- Ferrule vs fitting: ferrule is the crimp sleeve; fitting is the connection end.
- Reusable fitting: different from permanently crimped fittings.
FAQ
What information should I send for a hose quote?
Send hose marking, ID, length, fitting type, fitting angle, pressure, fluid, temperature, machine type and quantity.
Is dash size the same as thread size?
No. Dash size often refers to hose ID or fitting size coding, while thread size describes the connection thread.
Need Help Selecting Hydraulic Hose?
Send Indo Hydraulics your hose marking, inner diameter, working pressure, machine type, hydraulic oil, temperature, fitting standard and quantity. We can help buyers compare hose families and prepare a quote for Indonesia, Southeast Asia and project supply.
Contact Indo Hydraulics or browse the hydraulic hose product catalog.