Forestry
Harvesters, skidders, forwarders, cranes and timber trailers: Hydro Service Auvergne crimps your hydraulic hoses and replaces slew motors, swivel joints and cylinders, in the Riom workshop or out on site.
On forestry machinery the hydraulics work out in the open. On a harvester everything runs through the boom: feed to the head, drive rollers, delimbing knives. On a forwarder or a skidder it is the crane, the rotator, the grapple, the winch and the articulated steering. Behind them come the timber trailer and its crane, the log splitter and its cylinder, the chipper and its rollers. What stops the machine is rarely the pump: it is a hose torn off by a branch, a swivel joint weeping at the end of the boom, or a slew motor leaking internally and losing torque.
Branches catch on anything that stands proud: a badly clamped hose or an over-long loop will not see out the season. Mud and bark hold moisture against the sleeves, cold stiffens the rubber and thickens the oil. The felling site is a long way from everything: a failure at the end of the track is paid for in machine downtime. How the hoses are routed and protected counts for as much as the part number.
- Crane, rotator and harvester head loom hoses: EN 853 2SN braided, EN 857 2SC compact where the bend radius is tight, EN 856 4SP and 4SH spiral on lines that take heavy impulse.
- Slew motors, rotators, swivel joints, directional control valves and counterbalance valves.
- Boom, arm, grapple and stabiliser cylinders: seals, rods, refurbishment.
- Hydraulic skidding winches, anti-abrasion sleeves, clamps and flanges.
We crimp your hoses at the Riom workshop, one-off or as a complete set, and we come out for breakdown service on site. Bring us the hose you have removed: it carries its markings and its dimensions. Otherwise, take down the inside diameter, the length between sealing faces, the fittings and their orientation, and the working pressure. Tell us if the machine runs on biodegradable oil: the choice of rubber compound depends on it.