The forward position of the hydraulic tipping ram reduces the stress on the body and ensures a maximum vehicle stability. Fitted as standard on all models in the JOSKIN range of tipping trailers, a safety valve, placed directly on the hydraulic tipping ram, prevents the body from unexpectedly falling down (e.g. when a hydraulic hose breaks).

The tipping stabiliser is a particularly useful tool when unloading sticky or ‘slow-moving' material that may remain in the body until the last element of the hydraulic tipping ram is extended. In such a case, it is not unusual to have a negative load on the eyelet. The tipping trailer then tends to lift the rear of the tractor. To avoid this, a suspension locking device called "tipping stabiliser" is the solution. For trailers with a bogie, two hydraulic rams installed vertically between the bogie table and the rear axle prevent the parabolic leaves from bending and stabilise the machine. For trailers with a Hydro-Tandem or Hydro-Tridem running gear, an oil blocking device is activated in the axle suspension system and prevents any shock absorbing effect when tipping.

The system consists of a control box in the tractor cab, a level indicator on the front of the body and an automatic height adjustment system. The slope position adjustment is fitted in combination with the Hydro-Pendul running gear. It allows the level of the chassis to be adjusted horizontally so that the tipping trailer can be emptied on uneven ground.