Choosing the wrong hydraulic hose is one of the most common causes of unplanned downtime in heavy machinery. A failure not only stops the operation: the high fluid pressure can cause accidents. That's why it pays to follow a clear selection method. The industry sums it up with the acronym STAMPED, which we review here adapted to the Panamanian reality.

1. Inside diameter (Size)

The inside diameter determines flow rate and fluid velocity. Too small a diameter creates heat and pressure drops; too large is costly and bulky. Always respect the equipment's original size and check the actual inside diameter, not just the nominal size.

2. Temperature

Consider both fluid and ambient temperature. In Panama, heat and humidity are constant, and hoses near engines can exceed 100 °C. Verify the operating range of the reinforcement and cover.

3. Application & Pressure

Identify the circuit's maximum working pressure and choose a hose whose rated pressure exceeds it with a safety factor of at least 4:1. For medium-high pressure, SAE 100 R1 (single steel braid) is common, and for high pressure SAE 100 R2 (dual braid).

4. Material and compatibility

The hydraulic fluid, oil, fuel or chemicals must be compatible with the inner tube. An incompatible tube degrades from the inside with no visible signs.

5. Ends (Fittings)

Fittings —JIC 37°, NPT, BSP, ORFS— must match the equipment. A properly crimped assembly is as important as the hose: this is where many leaks occur.

6. Delivery and assembly

Having a supplier that assembles to spec and keeps local stock dramatically reduces downtime. At YRVIMAR we assemble hydraulic hoses with the fittings your equipment requires.

Common mistakes to avoid

  • Choosing by price while ignoring the required SAE standard.
  • Reusing worn fittings on a new hose.
  • Bending the hose below its minimum bend radius.
  • Not allowing slack for contraction under pressure.

If you're unsure about the size or standard, send us a photo of the hose and its fittings on WhatsApp and we'll help you identify the correct replacement.