Quarrying
Excavators, loaders, crushers, screens and conveyors: very high pressure and spiral hoses, and cylinders exposed to abrasion and rock dust. Crimped to order in Riom, with breakdown service in the workshop and on site.
In a quarry, a hydraulic failure rarely stops just one machine: it stops the chain. An overburden excavator standing idle, a track motor leaking, a breaker line split open, a conveyor folding cylinder seized, and the feed to the crusher dries up behind it. The weak points are well known: boom and dipper hoses, breaker lines, track motors, lubrication units.
Three constraints stack up here. Abrasion: rock dust attacks the sleeves from the outside, and a hose rubbing on a plate will not see out a season without a protective sleeve. Fluid contamination: fines getting in past a missing cap, a saturated breather or an unprotected coupling wear out pumps and valves, because it is the cleanliness of the oil, coded to ISO 4406, that decides how long they last. And finally the vibration of crushing, which works fittings loose and breaks rigid tube that is poorly clamped.
- Four-layer spiral hose to EN 856 4SP and 4SH, SAE 100R12 and R13, or tubing classified to ISO 18752.
- Anti-abrasion sleeves, plastic spiral wrap and spray-guard sleeves.
- Boom, dipper and bucket cylinders, conveyor folding cylinders, track motors.
- Fittings, SAE J518 (ISO 6162) flanges, high-pressure couplings and adapters.
We crimp these hoses in the Riom workshop, one at a time or as a full set, and we work in the workshop or on the plant itself. Bring in the part you have taken off: dimensions and hose end orientation can be read straight from it. Failing that, note what is printed on the sleeve: standard, inside diameter, number of wire layers, and the working pressure. Tell us if it is a breaker circuit: that calls for a construction that takes the impulses, and a protective sleeve run up the hose.