Hose management in mining and construction machinery

Technical explanation

Hydraulic hose safety guides call for bending, torsion, vibration, rubbing and pressure surges to be taken into account. On a moving machine, a length that appears adequate only in the rest position can be stretched in a different operating position. External protection can help reduce abrasion but does not correct incorrect routing. Pressurized leaks must not be checked by hand; failure investigation is carried out by authorized personnel on a system that has been made safe.

Source: S017, S031

Topic-specific checkpoints

Source: S017, S031

How to evaluate it in practice

Mark the machine's range of motion and the surfaces the hose may contact on the installation plan. In the replacement kit, define not only the hose but also the correct fitting orientation and protective elements. Protect the ends from dirt; take the cleanliness requirement from the service instructions. During a field replacement, record the identification and revision of the product fitted. For recurring failures, investigate common patterns of rubbing, movement or pressure before changing the hose brand.

Original editorial recommendation; not a clause of a standard.

Frequently asked questions

Does a thicker hose reduce all field failures?

No. Such a conclusion cannot be drawn without evaluating flexibility, connection, routing and actual loads together.

Source: S017, S031