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The double-axle running gear with "Roll-Over" bogie offers, thanks to its design, a complementary suspension system to the wheels as well as a larger contact surface with the ground. It consists of 2 axles connected by parabolic leaves and is bolted to the chassis by what is commonly known as "the table", a large support that balances and distributes the loads in an optimal way. With its maximum clearance of 240 mm, it can absorb the irregularities in the terrain. Thanks to the position of the cross-axis under the spring leaves and the position of the axles above the ends of these same leaves, a pull line pushes the front axle over the obstacle. The advantages of this design are manifold: in addition to a lower centre of gravity and thus a better stability, the required traction power is significantly reduced. JOSKIN assembles its own bogies, which means that they can be made to measure for your vehicle. The distance between the axles and therefore the length of the leaves can be adapted to each machine, e.g. according to the choice of tyres. All JOSKIN “Roll-Over” bogies are bolted and therefore movable.
The double-axle running gear with "Cross-Over" bogie offers, thanks to its design, a complementary suspension system to the wheels as well as a larger contact surface with the ground. It consists of 2 axles connected by parabolic leaves and is bolted to the chassis by what is commonly known as "the table", a large support that balances and distributes the loads in an optimal way.The advantages of the Roll-Over bogie are kept, even if the axles are located under the leaves. This particular design provides the running gear with a more significant ground clearance. That is why this system is advised in case of intensive use on uneven ground (for instance for construction tipping trailers) where the user is often confronted with clearance problems. With its maximum clearance of 240 mm, it can absorb the irregularities in the terrain. Thanks to the position of the cross-axis under the spring leaves and the position of the axles under the ends of these same leaves, a pull line pushes the front axle over the obstacle. The required traction power is therefore reduced. JOSKIN assembles its own bogies, which means that they can be made to measure for your vehicle. The distance between the axles and therefore the length of the leaves can be adapted to each machine, e.g. according to the choice of tyres. All JOSKIN “Cross-Over” bogies are bolted and therefore movable.
The rocker beam is available as an option on the larger double-axle Trans-KTP models. It consists of two large boxes made of 300 x 300 x 12.5 mm tubular sections, each supporting two half-axles. They are built around a central axis mounted on bushes with grease nipples and a one-piece table bolted to the chassis. The rocker beam is the most economical and robust type of running gear for double-axle trailers. It adapts perfectly to difficult terrain conditions, while providing a maximum tipping stability (no suspension settling effect).
On the Hydro-Pendul hydraulic suspension, each axle is mounted on two double-acting hydraulic rams (one on each side of the chassis). The axle is connected to the chassis by a triangular structure of large-diameter tubes, the end of which is attached to a large knee-joint with a vertical axis that ensures a great stability of the running gear. On the Hydro-Pendul of a tipping trailer, you can secure your tipping operation with the option "tipping stabiliser". The concept is simply to lock the hydraulic rams of the suspension so that they remain perfectly stable.